Sickle Cell Disease

Question: A nurse assesses a 9-year-old child with sickle cell disease who presents with severe bilateral leg pain after several hours of playing outdoors in hot weather. The child has dry mucous membranes, concentrated urine, and a heart rate of 124 beats/min. Which pathophysiologic process best explains the child's symptoms? Answer Choices: A) Increased erythrocyte production causes blood viscosity to rise and produces generalized tissue inflammation. B) Dehydration promotes sickling and microvascular occlusion, reducing tissue perfusion and causing ischemic pain. C) Accelerated destruction of sickled erythrocytes causes bilirubin accumulation and directly produces localized bone infarction. D) Increased platelet production obstructs large arteries, causing acute tissue necrosis without affecting capillary circulation.

Option A is incorrect because increased erythrocyte production is not the primary mechanism responsible for an acute vaso-occlusive crisis. Option B is correct because dehydration can precipitate sickling, and rigid, deformed erythrocytes obstruct small blood vessels, causing ischemia, tissue injury, and severe pain. Heat exposure and inadequate fluid intake can contribute to this process. Option C is incorrect because hemolysis contributes to chronic anemia and jaundice, but it does not independently explain the acute ischemic pain as well as microvascular occlusion does. Option D is incorrect because sickle cell vaso-occlusion primarily involves sickled erythrocytes obstructing small vessels rather than platelet overproduction obstructing large arteries. Correct Answer: B

Question: A nurse is evaluating the benefits of blood transfusion therapy for a client with sickle cell disease. Which benefits are identified in the slideshow? Select all that apply.

Answer Choices: A) Improved blood oxygenation. B) Improved tissue oxygenation. C) Reduction in sickling. D) Temporary suppression of erythrocytes containing HbS. E) Permanent correction of the genetic defect. F) Elimination of all future vaso-occlusive crises.

Option A is correct because transfusions improve the oxygen-carrying capacity of circulating blood. Option B is correct because improved blood oxygenation supports oxygen delivery to tissues. Option C is correct because transfusions reduce the proportion of sickled erythrocytes and decrease sickling. Option D is correct because the slideshow specifically identifies temporary suppression of erythrocytes containing HbS as a benefit. Option E is incorrect because transfusions do not alter the inherited genetic mutation. Option F is incorrect because transfusions do not guarantee that future vaso-occlusive crises will be eliminated. Correct Answer: A, B, C, D

Question: A nurse is assessing a client with sickle cell disease for manifestations of acute chest syndrome. Which findings should raise concern for this complication? Select all that apply.

Answer Choices: A) Fever. B) Chest pain. C) Increasing white blood cell count. D) Pulmonary infiltrates. E) Isolated chronic jaundice. F) Chronic lower-extremity skin ulcers.

Option A is correct because fever is identified as a manifestation of acute chest syndrome. Option B is correct because chest pain is another characteristic finding. Option C is correct because an increasing white blood cell count is specifically included in the slideshow's description. Option D is correct because pulmonary infiltrates are an important diagnostic finding associated with acute chest syndrome. Option E is incorrect because jaundice is associated with chronic hemolysis and does not independently establish acute chest syndrome. Option F is incorrect because skin ulcers are a separate chronic complication of sickle cell disease. Correct Answer: A, B, C, D

Question: A nurse is reviewing the potential triggers of a sickle cell crisis with a client. Which conditions should the nurse identify as potential precipitating factors? Select all that apply.

Answer Choices: A) Acidosis. B) Severe dehydration. C) Alcohol intoxication. D) Exposure to cold weather. E) Viral illness accompanied by vomiting. F) Consistent adequate hydration and appropriate rest.

Option A is correct because acidosis is identified in the PDF as a condition that can precipitate sickling. Option B is correct because dehydration increases the risk of sickling and vascular obstruction. Option C is correct because alcohol intoxication is identified as a potential crisis trigger. Option D is correct because cold exposure can contribute to vasoconstriction and precipitate a crisis. Option E is correct because illness and vomiting can cause dehydration and physiologic stress. Option F is incorrect because adequate hydration and appropriate rest are supportive preventive measures rather than crisis triggers. Correct Answer: A, B, C, D, E

Question: A nurse is reviewing the diagnostic testing used for sickle cell disease with a nursing student. Which test is specifically identified in the slideshow as mandatory for identifying affected newborns?

Answer Choices: A) Routine ultrasound. B) Newborn screening. C) Amniocentesis. D) Bone marrow biopsy.

Option A is incorrect because routine ultrasound screening is identified as beginning at 2 years of age and is not the mandatory newborn screening test. Option B is correct because the slideshow specifically identifies mandatory newborn screenings as part of the diagnostic evaluation for sickle cell disease. Early identification allows preventive care and monitoring to begin before serious complications develop. Option C is incorrect because amniocentesis is a prenatal diagnostic option rather than routine newborn screening. Option D is incorrect because bone marrow biopsy is not identified as the standard newborn screening method. Correct Answer: B

Question: A nurse is reviewing the different forms of sickle cell disease with a nursing student. Which description correctly identifies sickle cell trait? Answer Choices: A) Inheritance of two hemoglobin S genes. B) Inheritance of one hemoglobin S gene and one normal hemoglobin A gene. C) Inheritance of two hemoglobin A genes. D) Inheritance of one hemoglobin S gene and two abnormal beta-globin genes.

Option A is incorrect because inheriting two hemoglobin S genes is associated with sickle cell anemia (HbSS), rather than sickle cell trait. Option B is correct because sickle cell trait (HbAS) occurs when an individual inherits one hemoglobin S gene and one normal hemoglobin A gene. These individuals are generally asymptomatic but may experience complications under extreme physiologic stress, particularly severe hypoxia. Option C is incorrect because inheriting two normal hemoglobin A genes represents a normal hemoglobin pattern. Option D is incorrect because this does not describe the inheritance pattern of sickle cell trait. Correct Answer: B

Question: A nurse is reviewing the different forms of sickle cell disease with a client whose child has been diagnosed with HbSC disease. Which explanation is most accurate? Answer Choices: A) The child inherited two hemoglobin S genes. B) The child inherited one hemoglobin S gene and one hemoglobin C gene. C) The child inherited one hemoglobin S gene and one normal hemoglobin A gene. D) The child inherited two normal hemoglobin A genes.

Option A is incorrect because two hemoglobin S genes describe sickle cell anemia (HbSS). Option B is correct because HbSC disease occurs when a child inherits one hemoglobin S gene from one parent and one hemoglobin C gene from the other parent. This is a form of sickle cell disease, not sickle cell trait. Option C is incorrect because one hemoglobin S gene and one normal hemoglobin A gene describe sickle cell trait. Option D is incorrect because two normal hemoglobin A genes do not produce sickle cell disease. Correct Answer: B

Question: A nurse is reviewing the diagnosis of a child with HbS beta-thalassemia. Which inheritance pattern best explains this condition? Answer Choices: A) One hemoglobin S gene and one beta-thalassemia gene. B) Two normal hemoglobin A genes. C) Two hemoglobin S genes. D) One hemoglobin A gene and one hemoglobin C gene.

Option A is correct because HbS beta-thalassemia occurs when an individual inherits a hemoglobin S gene from one parent and a beta-thalassemia gene from the other parent. This produces a form of sickle cell disease with manifestations that can vary depending on the type of beta-thalassemia inherited. Option B is incorrect because two normal hemoglobin A genes do not produce a hemoglobinopathy. Option C is incorrect because two hemoglobin S genes describe HbSS sickle cell anemia. Option D is incorrect because this does not describe HbS beta-thalassemia. Correct Answer: A

Question: A nurse explains why sickled erythrocytes can cause repeated episodes of tissue injury even after oxygenation and hydration improve. Which explanation is most accurate? Answer Choices: A) Sickled erythrocytes permanently lose all ability to return to their normal shape. B) Rehydration and reoxygenation may restore erythrocyte shape, but repeated sickling damages the cell membrane and shortens the cell's lifespan. C) Reoxygenation causes erythrocytes to multiply rapidly and obstruct the spleen. D) Hydration permanently eliminates hemoglobin S from circulating erythrocytes.

Option A is incorrect because some sickled erythrocytes can resume a more normal shape when rehydrated and reoxygenated. Option B is correct because repeated sickling and unsickling damage erythrocyte membranes, making the cells increasingly fragile. Although their shape may temporarily improve, their lifespan is substantially shortened, contributing to chronic hemolytic anemia. Option C is incorrect because reoxygenation does not cause erythrocyte multiplication or directly produce splenic obstruction. Option D is incorrect because hydration does not eliminate the inherited hemoglobin S abnormality. Correct Answer: B

Question: A nurse is assessing a client with sickle cell disease who reports that a painful crisis began four days ago. Which statement about the expected duration of a typical vaso-occlusive crisis is most accurate? Answer Choices: A) Most crises resolve within several hours without treatment. B) A crisis commonly lasts approximately 4–6 days, although duration and severity vary. C) Every crisis lasts exactly 10–20 days. D) A crisis is considered chronic only when it lasts longer than one month.

Option A is incorrect because vaso-occlusive crises commonly persist longer than several hours and may require hospitalization and significant pain management. Option B is correct because the provided slideshow identifies a typical sickle cell crisis as lasting approximately 4–6 days. However, the PDF explains that the duration and intensity of pain vary depending on the affected location and severity, and some episodes may last considerably longer. Option C is incorrect because 10–20 days refers to the shortened lifespan of affected erythrocytes in the slideshow, not the expected duration of every crisis. Option D is incorrect because this is not the definition of a vaso-occlusive crisis. Correct Answer: B

Question: A nurse is teaching a client with sickle cell disease about the potential development of gallstones. Which explanation is most accurate? Answer Choices: A) Chronic erythrocyte destruction increases bilirubin production, contributing to pigment gallstone formation. B) Decreased hemoglobin production causes cholesterol to accumulate in the gallbladder. C) Repeated dehydration causes calcium deposits to form in the gallbladder. D) Increased platelet production blocks the common bile duct.

Option A is correct because chronic hemolysis increases bilirubin production. Excess bilirubin can contribute to the formation of pigment gallstones, which are a recognized complication of sickle cell disease. Option B is incorrect because reduced hemoglobin production does not directly cause cholesterol accumulation in the gallbladder. Option C is incorrect because calcium deposition from dehydration is not the primary mechanism described for pigment gallstones. Option D is incorrect because platelet production does not cause the formation of gallstones. Correct Answer: A

Question: A nurse is reviewing preventive monitoring for a child with sickle cell disease. According to the supplied slideshow, when should routine ultrasound screening for stroke risk begin?  Answer Choices: A) At birth. B) At 6 months. C) At 2 years. D) At 12 years.

Option A is incorrect because the slideshow identifies routine ultrasound screening beginning at 2 years rather than immediately at birth. Option B is incorrect because 6 months is not the starting age identified in the slideshow. Option C is correct because the diagnostic testing slide identifies routine ultrasound screening beginning at 2 years of age. This screening is important because children with sickle cell disease have an increased risk of stroke. Option D is incorrect because waiting until adolescence would delay the screening approach described in the course materials. Correct Answer: C

Question: A nurse is caring for a child with sickle cell disease whose family asks why blood transfusions may be needed even when the child is already receiving hydroxyurea. Which response is most appropriate?  Answer Choices: A) Hydroxyurea and transfusions are identical treatments, so using both indicates a medication error. B) Transfusions can improve oxygen delivery and temporarily reduce the proportion of circulating erythrocytes containing hemoglobin S, while hydroxyurea helps reduce sickling-related complications. C) Transfusions permanently correct the genetic defect, whereas hydroxyurea only treats pain. D) Transfusions are used exclusively to increase iron stores in children with chronic anemia.

Option A is incorrect because hydroxyurea and transfusions have different mechanisms and may be used as part of individualized treatment plans. Option B is correct because transfusions increase the amount of functional hemoglobin and reduce the proportion of HbS-containing erythrocytes, while hydroxyurea increases fetal hemoglobin and reduces painful crises. Option C is incorrect because transfusions do not correct the inherited genetic defect, and hydroxyurea has effects beyond pain management. Option D is incorrect because increasing iron stores is not the purpose of transfusion therapy; repeated transfusions can actually cause iron overload. Correct Answer: B

Question: A nurse reviews the medical history of a child newly diagnosed with sickle cell disease. Both parents have sickle cell trait. Which explanation best describes the probability of the child inheriting sickle cell disease with each pregnancy? Answer Choices: A) The child has a 50% chance of developing sickle cell disease because one abnormal hemoglobin gene is inherited from each parent. B) The child has a 25% chance of developing sickle cell disease because the condition follows an autosomal recessive inheritance pattern. C) The child has a 75% chance of developing sickle cell disease because at least one parent carries hemoglobin S. D) The child will develop sickle cell disease only if both parents have symptomatic sickle cell anemia.

Option A is incorrect because a 50% probability does not accurately represent the chance of inheriting two hemoglobin S genes when both parents have sickle cell trait. Option B is correct because sickle cell disease follows an autosomal recessive inheritance pattern. When both parents carry one hemoglobin S gene, each pregnancy has a 25% chance of producing a child with sickle cell disease, a 50% chance of producing a child with sickle cell trait, and a 25% chance of producing a child without either inherited hemoglobin S combination. Option C is incorrect because carrying one hemoglobin S gene does not create a 75% probability of sickle cell disease. Option D is incorrect because parents can have sickle cell trait without symptoms and still have a child with sickle cell disease. Correct Answer: B

Question: A nurse explains why a newborn with sickle cell disease may initially appear healthy despite having inherited the disorder. Which explanation is most accurate? Answer Choices: A) The newborn's bone marrow does not begin producing erythrocytes until approximately 4 to 6 months of age. B) Fetal hemoglobin initially reduces the tendency of erythrocytes to sickle, and symptoms commonly emerge as fetal hemoglobin declines. C) Newborn erythrocytes cannot contain hemoglobin S until the child begins consuming solid foods. D) The spleen prevents all microvascular occlusion during the first six months of life.

Option A is incorrect because bone marrow produces erythrocytes before birth and continues producing them after birth. Option B is correct because fetal hemoglobin helps inhibit hemoglobin S polymerization, so infants with sickle cell disease are often asymptomatic during the first several months of life. As fetal hemoglobin levels decline, sickling-related manifestations become more apparent. Option C is incorrect because hemoglobin S is inherited genetically and is not dependent on solid-food intake. Option D is incorrect because the spleen does not prevent all microvascular occlusion, and sickle cell disease can produce serious complications as the protective effect of fetal hemoglobin diminishes. Correct Answer: B

Question: A nurse receives laboratory results for a client with sickle cell anemia who reports fatigue and increasing shortness of breath during activity. Which laboratory pattern is most consistent with the underlying chronic hemolytic anemia? Answer Choices: A) Decreased hemoglobin, increased indirect bilirubin, and increased reticulocyte count. B) Increased hemoglobin, decreased indirect bilirubin, and decreased reticulocyte count. C) Decreased hemoglobin, decreased indirect bilirubin, and decreased reticulocyte count. D) Normal hemoglobin, increased direct bilirubin, and increased platelet count.

Option A is correct because chronic destruction of sickled erythrocytes reduces hemoglobin levels, increases bilirubin production from erythrocyte breakdown, and usually stimulates the bone marrow to release more reticulocytes to compensate for the anemia. Option B is incorrect because increased hemoglobin and a decreased reticulocyte count do not reflect the typical compensatory pattern of chronic hemolysis. Option C is incorrect because a decreased reticulocyte count may indicate inadequate marrow response, as in an aplastic crisis, rather than the usual compensatory response to chronic hemolysis. Option D is incorrect because this combination does not represent the characteristic laboratory pattern of chronic hemolytic anemia. Correct Answer: A

Question: A nurse is caring for a 7-year-old child admitted with a sickle cell pain crisis. The child reports severe back and leg pain, and the oxygen saturation is 96% on room air. Which nursing intervention is the most appropriate initial action? Answer Choices: A) Apply cold packs to the painful areas and encourage the child to remain still until the pain resolves. B) Assess pain and respiratory status, administer prescribed analgesia promptly, and support hydration as indicated. C) Delay analgesia until the cause of the pain is confirmed by radiographic imaging. D) Restrict oral and intravenous fluids to prevent pulmonary edema and reduce the risk of acute chest syndrome.

Option A is incorrect because cold exposure can promote sickling, and cold packs are discouraged in the provided sickle cell nursing material. Option B is correct because pain assessment, timely analgesia, evaluation of oxygenation, and appropriate hydration address the major immediate needs of a patient experiencing vaso-occlusion. The nurse should continue monitoring for complications, including respiratory deterioration. Option C is incorrect because treatment of characteristic crisis pain should not be unnecessarily delayed while awaiting imaging when assessment supports a vaso-occlusive crisis. Option D is incorrect because dehydration can worsen sickling; fluid administration should be individualized to the patient's condition rather than routinely restricted. Correct Answer: B

Question: A nurse assesses a child with sickle cell disease who develops a temperature of 38.7°C (101.7°F), cough, chest pain, tachypnea, and decreasing oxygen saturation. Which complication should the nurse suspect first? Answer Choices: A) Aplastic crisis caused by temporary suppression of erythrocyte production. B) Splenic sequestration caused by pooling of blood in the spleen. C) Acute chest syndrome associated with pulmonary infiltrates and impaired oxygenation. D) Uncomplicated vaso-occlusive crisis limited to the musculoskeletal system.

Option A is incorrect because an aplastic crisis primarily causes a sudden decline in erythrocyte production, often presenting with worsening anemia, pallor, and fatigue. Option B is incorrect because splenic sequestration typically presents with acute splenic enlargement, worsening anemia, hypovolemia, and potentially shock. Option C is correct because fever, chest pain, cough, tachypnea, hypoxemia, and pulmonary infiltrates are characteristic findings of acute chest syndrome. This is a potentially life-threatening complication requiring urgent assessment and treatment. Option D is incorrect because respiratory symptoms and declining oxygen saturation suggest a complication beyond an uncomplicated musculoskeletal pain crisis. Correct Answer: C

Question: A nurse evaluates a child with sickle cell disease who suddenly becomes pale and lethargic. The nurse palpates an enlarged spleen and notes tachycardia, hypotension, and a rapidly decreasing hemoglobin level. Which complication best explains these findings? Answer Choices: A) Aplastic crisis caused by a temporary decrease in bone marrow erythrocyte production. B) Splenic sequestration caused by rapid pooling of blood within the spleen. C) Acute chest syndrome caused by pulmonary vascular obstruction. D) Chronic hemolysis causing a gradual reduction in circulating erythrocytes.

Option A is incorrect because aplastic crisis can cause severe anemia but does not typically explain the combination of acute splenic enlargement and signs of hypovolemic shock. Option B is correct because splenic sequestration occurs when blood becomes trapped in the spleen, producing an abrupt reduction in circulating blood volume and hemoglobin. The resulting hypovolemia can rapidly progress to shock, making this an emergency. Option C is incorrect because acute chest syndrome primarily involves pulmonary manifestations and impaired oxygenation. Option D is incorrect because chronic hemolysis generally causes persistent anemia rather than sudden splenic enlargement and acute circulatory collapse. Correct Answer: B

Question: A nurse reviews the laboratory results of a child with sickle cell disease who has developed sudden pallor, fatigue, and worsening weakness following a viral illness. The hemoglobin is substantially below the child's baseline, and the reticulocyte count is markedly decreased. Which complication is most likely? Answer Choices: A) Vaso-occlusive crisis caused by increased erythrocyte rigidity and microvascular obstruction. B) Aplastic crisis caused by decreased erythrocyte production during bone marrow suppression. C) Splenic sequestration caused by rapid accumulation of circulating erythrocytes in the spleen. D) Chronic hemolysis accompanied by an appropriate compensatory increase in erythrocyte production.

Option A is incorrect because vaso-occlusive crisis is primarily associated with ischemic pain and does not typically explain a markedly decreased reticulocyte count. Option B is correct because an aplastic crisis involves reduced erythrocyte production, often following a viral infection. The combination of a substantial hemoglobin decline and an inappropriately low reticulocyte count supports impaired marrow production. Option C is incorrect because splenic sequestration typically involves acute splenic enlargement and circulatory compromise. Option D is incorrect because chronic hemolysis usually stimulates compensatory reticulocyte production rather than producing a markedly decreased count. Correct Answer: B

Question: A nurse is reviewing the medical history of a 2-year-old child with sickle cell disease who has missed several vaccinations and has not received prescribed prophylactic antibiotics consistently. Which complication is the child particularly vulnerable to? Answer Choices: A) Severe infection related to impaired splenic function and reduced ability to clear certain encapsulated bacteria. B) Excessive erythrocyte production caused by persistent stimulation of the bone marrow. C) Acute iron deficiency caused directly by the absence of prophylactic antibiotics. D) Increased protection against bacterial infection because sickled erythrocytes destroy invading microorganisms.

Option A is correct because sickle cell disease can impair splenic function, increasing susceptibility to severe infection. Young children are particularly vulnerable, and preventive measures include prescribed prophylactic antibiotics and recommended vaccinations. Option B is incorrect because increased erythrocyte production is not the principal consequence of missed vaccines or antibiotic prophylaxis. Option C is incorrect because missing prophylactic antibiotics does not directly cause iron deficiency. Option D is incorrect because sickled erythrocytes do not provide protection against serious bacterial infection. Correct Answer: A

Question: A nurse reviews diagnostic results for an infant undergoing evaluation for sickle cell disease. Which finding most directly supports the diagnosis? Answer Choices: A) A positive newborn screening result followed by confirmatory testing identifying hemoglobin S. B) An isolated elevated white blood cell count without further hemoglobin analysis. C) A normal oxygen saturation reading obtained during a routine physical examination. D) A low serum ferritin concentration without evidence of abnormal hemoglobin.

Option A is correct because newborn screening can identify abnormal hemoglobin patterns, and confirmatory hemoglobin testing establishes the presence and type of hemoglobinopathy. Option B is incorrect because an elevated white blood cell count is nonspecific and cannot establish sickle cell disease. Option C is incorrect because normal oxygen saturation at one point in time does not exclude an inherited hemoglobin disorder. Option D is incorrect because low ferritin supports iron deficiency rather than confirming sickle cell disease. Correct Answer: A

Question: A nurse explains the difference between sickle cell trait and sickle cell disease to the parents of a child whose screening test identified one hemoglobin S gene. Which statement is most accurate? Answer Choices: A) The child necessarily has chronic hemolytic anemia and will experience recurrent vaso-occlusive crises. B) The child carries one hemoglobin S gene and is generally asymptomatic, although severe hypoxia or extreme physiologic stress can create risks. C) The child cannot pass hemoglobin S to future children unless the child develops sickle cell anemia. D) The child has inherited two abnormal hemoglobin S genes but is protected from symptoms by normal erythrocyte production.

Option A is incorrect because carrying one hemoglobin S gene generally indicates sickle cell trait rather than sickle cell disease. Option B is correct because sickle cell trait is usually asymptomatic, although severe hypoxia and certain extreme physiologic stressors can increase the risk of complications. Option C is incorrect because a person with sickle cell trait can pass the hemoglobin S gene to offspring. Option D is incorrect because sickle cell trait involves one hemoglobin S gene, not two. Correct Answer: B

Question: A nurse is teaching a client with sickle cell disease about factors that can precipitate a vaso-occlusive crisis. Which explanation best describes why hypoxemia increases the risk of sickling? Answer Choices: A) Low oxygen levels cause hemoglobin S to remain dissolved, making erythrocytes more flexible and increasing venous pooling. B) Deoxygenation promotes hemoglobin S polymerization, causing erythrocytes to become rigid, deformed, and more likely to obstruct small vessels. C) Low oxygen levels directly increase iron absorption, causing erythrocytes to enlarge and obstruct major arteries. D) Hypoxemia stimulates the spleen to release large quantities of normal erythrocytes, resulting in acute blood viscosity changes.

Option A is incorrect because deoxygenation promotes rather than prevents hemoglobin S polymerization. Option B is correct because deoxygenated hemoglobin S can polymerize into rigid structures, distorting erythrocytes into a sickle shape and promoting microvascular obstruction, ischemia, and organ injury. Option C is incorrect because increased iron absorption is not the primary mechanism of sickling. Option D is incorrect because splenic release of normal erythrocytes does not explain the cellular deformation caused by deoxygenated hemoglobin S. Correct Answer: B

Question: A nurse assesses a client with sickle cell disease who reports persistent fatigue, pallor, and intermittent yellowing of the eyes. Which mechanism best explains the yellow discoloration? Answer Choices: A) Increased destruction of erythrocytes releases heme breakdown products that contribute to bilirubin accumulation. B) Reduced erythrocyte destruction causes excessive iron storage in the skin and sclera. C) Decreased hemoglobin S production directly deposits yellow pigment into the conjunctiva. D) Increased platelet destruction releases bilirubin into the bloodstream independently of erythrocyte turnover.

Option A is correct because sickle cell disease causes chronic hemolysis, and erythrocyte breakdown increases bilirubin production, which can contribute to jaundice. Option B is incorrect because reduced erythrocyte destruction does not explain the typical hemolysis-associated jaundice. Option C is incorrect because hemoglobin S does not directly deposit yellow pigment in the conjunctiva. Option D is incorrect because platelet destruction is not the primary mechanism responsible for hemolysis-associated bilirubin elevation. Correct Answer: A

Question: A nurse is caring for an adult with sickle cell disease who reports severe abdominal pain, nausea, and increasing weakness. The client has a history of recurrent vaso-occlusive crises. Which nursing action is most appropriate? Answer Choices: A) Assume the abdominal pain is an expected manifestation of sickle cell disease and postpone further assessment until analgesia is effective. B) Assess pain, vital signs, abdominal findings, hydration, and associated symptoms while initiating prescribed pain management and evaluating for complications. C) Restrict fluids and encourage ambulation before assessing for possible abdominal organ involvement. D) Administer an antidiarrheal medication because abdominal pain in sickle cell disease usually reflects intestinal fluid loss.

Option A is incorrect because abdominal pain can occur during a crisis, but the nurse must assess for potentially serious complications rather than attributing all pain to the expected disease course. Option B is correct because sickle cell disease can cause abdominal pain through vaso-occlusion and organ ischemia, and a comprehensive assessment is necessary to evaluate severity, hydration, and potential complications while treating pain. Option C is incorrect because routine fluid restriction may worsen dehydration, and ambulation should not precede appropriate assessment. Option D is incorrect because abdominal pain alone does not establish diarrhea or justify antidiarrheal therapy. Correct Answer: B

Question: A nurse assesses a client with sickle cell disease who reports a painful erection that has persisted for several hours. Which complication should the nurse suspect? Answer Choices: A) Splenic sequestration caused by pooling of erythrocytes in the splenic circulation. B) Priapism caused by impaired blood flow and vaso-occlusion affecting penile circulation. C) Aplastic crisis caused by suppression of erythrocyte production in the bone marrow. D) Acute chest syndrome caused by pulmonary microvascular obstruction.

Option A is incorrect because splenic sequestration involves blood pooling in the spleen and typically presents with splenic enlargement and circulatory compromise. Option B is correct because sickle cell disease can cause priapism through vaso-occlusion and impaired circulation in the penile vasculature. A prolonged painful erection requires urgent medical evaluation because delayed treatment can cause lasting injury. Option C is incorrect because aplastic crisis primarily causes acute anemia due to reduced erythrocyte production. Option D is incorrect because acute chest syndrome primarily affects pulmonary function and oxygenation. Correct Answer: B

Question: A nurse evaluates a child with sickle cell disease who reports new severe headache, facial asymmetry, and weakness of one arm. Which action should the nurse prioritize? Answer Choices: A) Administer the next scheduled oral analgesic and reassess the child in 30 minutes. B) Encourage oral fluids and place the child in a dark room to reduce sensory stimulation. C) Activate the emergency response process and obtain immediate evaluation for possible stroke. D) Document the symptoms as an expected manifestation of chronic anemia and continue routine monitoring.

Option A is incorrect because scheduled analgesia does not address the possibility of an acute neurologic emergency. Option B is incorrect because oral hydration and environmental modification cannot replace urgent evaluation for suspected stroke. Option C is correct because sickle cell disease increases the risk of cerebral ischemia and stroke, and new focal neurologic deficits require immediate emergency assessment. Option D is incorrect because facial asymmetry and unilateral weakness are not findings that should be attributed to uncomplicated chronic anemia. Correct Answer: C

Question: A nurse is planning preventive care for a child with sickle cell disease who is at increased risk for stroke. Which intervention is specifically identified in the provided course materials as part of pediatric stroke-risk management? Answer Choices: A) Routine transcranial Doppler screening and consideration of hydroxyurea as an alternative to chronic transfusion in appropriate children. B) Annual electrocardiograms and prophylactic anticoagulation for every child regardless of risk. C) Routine lumbar punctures and daily aspirin therapy to prevent all cerebral vaso-occlusive events. D) Restriction of fluids and activity to reduce cerebral blood flow and prevent erythrocyte sickling.

Option A is correct because the lifespan materials identify transcranial Doppler screening and hydroxyurea as approaches used in pediatric stroke prevention, with hydroxyurea described as a possible alternative to blood transfusions in appropriate children. Option B is incorrect because universal anticoagulation and annual electrocardiograms are not identified as the standard preventive approach in the supplied materials. Option C is incorrect because routine lumbar punctures and daily aspirin for every child are not presented as standard sickle cell stroke prevention. Option D is incorrect because fluid restriction can promote dehydration, which increases the risk of sickling. Correct Answer: A

Question: A nurse reviews a client's prescribed hydroxyurea regimen for sickle cell disease. Which explanation best describes the therapeutic purpose of this medication? Answer Choices: A) It directly replaces destroyed erythrocytes and immediately restores circulating hemoglobin to normal. B) It reduces sickling-related complications by increasing fetal hemoglobin production and reducing painful crises. C) It prevents all bacterial infections by restoring splenic function. D) It rapidly dissolves existing vascular clots and reverses established tissue infarction.

Option A is incorrect because hydroxyurea does not directly replace erythrocytes or immediately normalize hemoglobin. Option B is correct because hydroxyurea increases fetal hemoglobin production and can reduce the frequency of painful crises and other sickle cell complications. Option C is incorrect because hydroxyurea does not restore splenic function or replace infection-prevention measures. Option D is incorrect because hydroxyurea is not a thrombolytic medication and cannot reverse established infarction. Correct Answer: B

Question: A nurse reviews laboratory monitoring for a client taking hydroxyurea for sickle cell disease. Which monitoring plan is most consistent with the medication information in the provided PDF? Answer Choices: A) Monitor complete blood count and renal and liver function, assess hemoglobin levels, and evaluate for infection or bleeding. B) Monitor serum calcium and magnesium exclusively because hydroxyurea primarily causes electrolyte depletion. C) Monitor coagulation studies alone because hydroxyurea routinely causes severe anticoagulation. D) Monitor blood glucose and thyroid-stimulating hormone because hydroxyurea primarily suppresses endocrine function.

Option A is correct because the supplied medication table identifies complete blood count and renal and liver function monitoring, along with assessment for anemia, infection, and bleeding. Option B is incorrect because electrolyte monitoring alone does not address the medication's important hematologic and organ-function considerations. Option C is incorrect because coagulation testing alone is insufficient and does not reflect the listed monitoring priorities. Option D is incorrect because glucose and thyroid testing are not the principal monitoring parameters identified in the provided medication table. Correct Answer: A

Question: A nurse is teaching a client with sickle cell disease who has been prescribed crizanlizumab. Which explanation best describes how this medication works? Answer Choices: A) It increases intestinal iron absorption to improve erythrocyte production. B) It prevents hemoglobin S from being synthesized by the bone marrow. C) It inhibits P-selectin-mediated adhesion, reducing blood cell interactions that contribute to vaso-occlusion and painful crises. D) It replaces abnormal erythrocytes with normal donor cells without requiring a transfusion.

Option A is incorrect because crizanlizumab does not act by increasing intestinal iron absorption. Option B is incorrect because crizanlizumab does not prevent hemoglobin S synthesis. Option C is correct because crizanlizumab is a P-selectin inhibitor that reduces blood cell adhesion to vessel walls, helping decrease vaso-occlusive events and associated pain. Option D is incorrect because replacement of circulating erythrocytes is accomplished through transfusion rather than crizanlizumab therapy. Correct Answer: C

Question: A nurse reviews a medication list for a client with sickle cell disease who is prescribed L-glutamine. Which statement best describes its intended role? Answer Choices: A) It provides an amino acid supplement intended to reduce complications associated with sickle cell disease. B) It acts as a rapid-acting opioid analgesic during acute vaso-occlusive crises. C) It prevents infection by replacing the function of prophylactic antibiotics. D) It directly removes excess iron accumulated from repeated blood transfusions.

Option A is correct because the supplied medication table describes L-glutamine as an amino acid supplement used to reduce acute complications associated with sickle cell disease. Option B is incorrect because L-glutamine is not an opioid analgesic and does not replace acute pain management. Option C is incorrect because L-glutamine does not replace antibiotic prophylaxis or vaccination. Option D is incorrect because iron chelation therapy, rather than L-glutamine, is used to help manage transfusion-related iron overload. Correct Answer: A

Question: A nurse provides discharge teaching to the parents of a young child with sickle cell disease who is prescribed prophylactic penicillin. Which statement by a parent demonstrates correct understanding? Answer Choices: A) "I will stop the medication whenever my child has no fever because the spleen will recover its function." B) "I will give the medication as prescribed and seek prompt medical evaluation if my child develops a fever." C) "I will give the medication only during a painful crisis because infection is not a concern between crises." D) "I can replace the medication with vitamin supplements if my child eats a balanced diet."

Option A is incorrect because impaired splenic function may persist, and absence of fever does not justify independently stopping prescribed prophylaxis. Option B is correct because young children with sickle cell disease are at increased risk of severe infection, so prescribed antibiotic prophylaxis and prompt evaluation of fever are important. Option C is incorrect because infection risk exists outside painful crises and infection can precipitate serious complications. Option D is incorrect because nutritional supplements cannot replace prescribed antibiotic prophylaxis. Correct Answer: B

Question: A nurse is caring for a client with sickle cell disease who is receiving an ordered blood transfusion for a serious complication. Which therapeutic effect should the nurse expect? Answer Choices: A) Complete elimination of the inherited hemoglobin S mutation from all erythrocytes. B) Temporary improvement in oxygen delivery and reduction in the proportion of circulating erythrocytes containing hemoglobin S. C) Permanent restoration of normal splenic function and elimination of future infection risk. D) Immediate removal of all excess iron accumulated during previous transfusions.

Option A is incorrect because transfusion does not correct the inherited genetic mutation. Option B is correct because donor erythrocytes increase the available functional hemoglobin, improve oxygen delivery, and temporarily reduce the proportion of circulating erythrocytes containing hemoglobin S. Option C is incorrect because transfusion does not permanently restore splenic function or eliminate infection risk. Option D is incorrect because transfusion adds erythrocytes and can contribute to iron accumulation rather than immediately removing excess iron. Correct Answer: B

Question: A nurse monitors a client who has received repeated blood transfusions for sickle cell disease. Which long-term complication should the nurse recognize as a concern? Answer Choices: A) Iron overload caused by accumulation of transfused iron and alloimmunization caused by immune responses to donor erythrocyte antigens. B) Complete depletion of body iron stores and permanent inability to form erythrocytes. C) Permanent correction of the sickle cell mutation accompanied by increased risk of vitamin C deficiency. D) Elimination of all future transfusion reactions because repeated exposure creates universal tolerance.

Option A is correct because repeated transfusions can cause iron overload, with iron accumulating in tissues and organs, and can produce alloimmunization when the recipient develops antibodies against donor erythrocyte antigens. Option B is incorrect because repeated transfusions generally increase iron exposure rather than causing complete iron depletion. Option C is incorrect because transfusion does not permanently correct the inherited mutation. Option D is incorrect because repeated transfusion exposure does not guarantee tolerance and can increase the risk of alloimmunization. Correct Answer: A

Question: A nurse is preparing to administer a prescribed blood transfusion to a child with sickle cell disease. Which nursing action is most appropriate to reduce the risk of complications? Answer Choices: A) Administer the blood with any available intravenous solution and assess the child only after the transfusion is complete. B) Use the prescribed compatible blood product and appropriate compatible fluid, monitor vital signs and respiratory status, and assess for transfusion reactions. C) Increase the infusion rate whenever the child reports pain to improve oxygen delivery as quickly as possible. D) Withhold all assessment of fluid balance because transfusions do not affect circulating volume.

Option A is incorrect because blood products require appropriate compatibility procedures and compatible infusion solutions, and monitoring should occur during the transfusion. Option B is correct because appropriate blood-product administration, fluid selection, and monitoring for respiratory changes and transfusion reactions are essential safety measures. The provided nursing material also emphasizes attention to fluid volume in children receiving transfusions. Option C is incorrect because the infusion rate must follow the prescription and clinical protocol, not the child's pain level. Option D is incorrect because transfusions can affect circulating volume, making fluid-balance assessment important. Correct Answer: B

Question: A nurse teaches a client with sickle cell disease about gene-editing treatment. Which statement accurately describes the approach discussed in the provided PDF? Answer Choices: A) The patient's circulating erythrocytes are exposed to oxygen until their inherited genes permanently normalize. B) Hematopoietic cells are collected and genetically modified to alter hemoglobin-related pathways, potentially reducing sickling. C) A donor spleen is transplanted to remove the abnormal hemoglobin S gene from the bloodstream. D) Iron chelation permanently replaces hemoglobin S with normal adult hemoglobin.

Option A is incorrect because oxygenation can influence sickling but does not permanently correct the genetic mutation. Option B is correct because gene-editing approaches involve collecting the patient's hematopoietic cells and modifying genetic regulation or hemoglobin production to reduce sickling. The PDF describes this as an emerging curative approach, while noting the need for continued evaluation of long-term outcomes. Option C is incorrect because splenic transplantation does not remove the inherited hemoglobin mutation. Option D is incorrect because iron chelation treats iron overload and does not replace hemoglobin S. Correct Answer: B

Question: A nurse is teaching the parents of a child with sickle cell disease about nutrition. Which dietary approach is most consistent with the supplied course materials? Answer Choices: A) A low-calorie, low-protein diet to reduce metabolic demands on the bone marrow. B) A high-calorie, high-protein diet with assessment for vitamin and macronutrient deficiencies. C) A strict iron-free diet for every child with sickle cell disease, regardless of laboratory results. D) A diet that eliminates fluids during periods of increased activity to reduce blood volume changes.

Option A is incorrect because children with sickle cell disease may have increased energy and protein requirements rather than reduced needs. Option B is correct because the provided PDF identifies increased metabolic demands and the potential for vitamin and macronutrient deficiencies, supporting a high-calorie, high-protein diet with individualized nutritional assessment. Option C is incorrect because universal iron restriction is not recommended by the supplied materials and should not be imposed without clinical indication. Option D is incorrect because dehydration can precipitate sickling, so fluid intake should be maintained appropriately. Correct Answer: B

Question: A nurse is assessing a pregnant client with sickle cell disease who reports more frequent painful episodes than before pregnancy. Which interpretation is most appropriate? Answer Choices: A) Pregnancy usually eliminates vaso-occlusive events because maternal blood volume increases. B) Increased pain crises and greater complication risk are recognized concerns during pregnancy in clients with sickle cell disease. C) Increased painful episodes indicate that the original diagnosis was probably incorrect. D) Pregnancy reduces the risk of preterm delivery and low birth weight in clients with sickle cell disease.

Option A is incorrect because pregnancy does not eliminate vaso-occlusive events. Option B is correct because the supplied lifespan materials describe more frequent and intense crises and increased complications during pregnancy. The PDF also identifies higher risks of miscarriage, premature birth, and low birth weight. Option C is incorrect because increased crisis frequency can occur in pregnancy and does not invalidate the diagnosis. Option D is incorrect because sickle cell disease is associated with increased rather than decreased risk of adverse pregnancy outcomes. Correct Answer: B

Question: A nurse is caring for an older adult with sickle cell disease who has chronic kidney disease and increasing fatigue. Which consideration should guide the nursing assessment? Answer Choices: A) Anemia in older adults is always a normal consequence of aging and does not require evaluation. B) Chronic kidney disease, chronic inflammation, and iron deficiency can contribute to anemia, and older adults may tolerate the effects less effectively. C) Sickle cell disease no longer causes organ complications after middle age. D) Fatigue in an older adult with sickle cell disease is sufficient evidence to diagnose iron deficiency without laboratory testing.

Option A is incorrect because anemia should not automatically be attributed to normal aging; potential underlying causes require assessment. Option B is correct because the lifespan slides identify iron deficiency, chronic disease or inflammation, and chronic kidney disease as common contributors to anemia in older adults. Reduced physiologic reserve can make symptoms more apparent. Option C is incorrect because chronic sickle cell disease can continue to affect multiple organs in later life. Option D is incorrect because fatigue is nonspecific and laboratory evaluation is needed to establish the cause of anemia. Correct Answer: B

Question: A nurse assesses a child with sickle cell disease who has swelling and severe pain in both hands and feet. The symptoms began after a recent illness and reduced fluid intake. Which manifestation is most consistent with the findings? Answer Choices: A) Dactylitis associated with vaso-occlusion in the small vessels of the hands and feet. B) Splenic sequestration caused by accumulation of blood in the splenic circulation. C) Aplastic crisis caused by reduced erythrocyte production without local ischemia. D) Iron overload caused by chronic transfusion therapy.

Option A is correct because painful swelling of the hands and feet can occur when sickled erythrocytes obstruct small vessels, producing ischemia and inflammation; this manifestation is particularly recognized in young children. Option B is incorrect because splenic sequestration is characterized by splenic enlargement and potentially severe anemia and hypovolemia. Option C is incorrect because aplastic crisis is primarily a problem of decreased erythrocyte production rather than localized painful swelling. Option D is incorrect because iron overload is a longer-term complication of repeated transfusions and does not explain the acute presentation. Correct Answer: A

Question: A nurse reviews the care plan for a hospitalized child with sickle cell disease who is receiving intravenous fluids during a pain crisis. Which finding best indicates that the hydration intervention is effective? Answer Choices: A) Urine output decreases, mucous membranes become dry, and the heart rate increases. B) Urine output is adequate for age and weight, mucous membranes are moist, and clinical signs of dehydration improve. C) The child develops increasing edema and crackles, indicating that fluid intake should continue to increase without reassessment. D) The child reports no pain, so intake and output monitoring can be discontinued.

Option A is incorrect because decreased urine output, dry mucous membranes, and tachycardia can indicate persistent or worsening dehydration. Option B is correct because improved hydration is reflected by adequate urine output, moist mucous membranes, and resolution of dehydration findings. The supplied PDF emphasizes monitoring intake, output, and hydration status. Option C is incorrect because edema and crackles may indicate fluid overload and require reassessment rather than automatic escalation of fluids. Option D is incorrect because pain improvement does not establish adequate hydration or remove the need for monitoring. Correct Answer: B

Question: A nurse caring for a child with sickle cell disease notes increasing respiratory rate, shortness of breath, and oxygen saturation of 88% during a pain crisis. Which nursing action has the highest priority? Answer Choices: A) Complete the routine nutritional assessment before addressing the respiratory findings. B) Encourage ambulation to improve circulation and reassess oxygen saturation after activity. C) Promptly assess airway and breathing, provide oxygen as indicated or prescribed, and urgently escalate care for possible acute chest syndrome. D) Administer the next scheduled oral vitamin supplement and document the findings at the end of the shift.

Option A is incorrect because nutritional assessment does not take priority over acute hypoxemia. Option B is incorrect because exertion may increase oxygen demand and is inappropriate before evaluating respiratory deterioration. Option C is correct because hypoxemia and increasing respiratory distress require immediate assessment and intervention, including oxygen as indicated, and urgent evaluation for acute chest syndrome. Option D is incorrect because routine supplementation cannot address a potentially life-threatening respiratory complication. Correct Answer: C

Question: A nurse is planning pain management for a child with sickle cell disease who has been admitted with a vaso-occlusive crisis. Which intervention is most appropriate? Answer Choices: A) Wait until pain becomes intolerable before administering prescribed analgesics to prevent medication dependence. B) Administer prescribed analgesics promptly and consistently, reassess pain, and use appropriate nonpharmacologic comfort measures. C) Apply ice packs to the affected joints and encourage the child to tolerate discomfort before receiving medication. D) Use distraction techniques as the only intervention because pharmacologic pain treatment delays recovery.

Option A is incorrect because delayed pain treatment can increase suffering and anxiety, and the supplied PDF emphasizes scheduled analgesia during crises rather than waiting until pain becomes intolerable. Option B is correct because timely analgesia, reassessment, and individualized supportive measures promote comfort and function. Option C is incorrect because cold exposure can promote sickling, and cold compresses are discouraged in the supplied nursing material. Option D is incorrect because nonpharmacologic approaches can supplement but do not replace prescribed analgesia for severe vaso-occlusive pain. Correct Answer: B

Question: A nurse is reviewing a client's hemoglobin electrophoresis results. Which finding is most consistent with sickle cell disease rather than sickle cell trait? Answer Choices: A) Evidence of hemoglobin S with a pattern consistent with inheritance of two abnormal hemoglobin genes. B) Evidence of one hemoglobin S gene and one normal hemoglobin A gene, without other abnormal hemoglobin findings. C) Normal hemoglobin analysis with an isolated low serum ferritin concentration. D) A positive urine culture accompanied by a normal hemoglobin pattern.

Option A is correct because sickle cell disease typically results from inheritance of two abnormal hemoglobin genes, with the specific hemoglobin pattern depending on the disease genotype. Option B is incorrect because one hemoglobin S gene and one normal hemoglobin A gene is the typical pattern of sickle cell trait. Option C is incorrect because low ferritin indicates reduced iron stores rather than confirming sickle cell disease. Option D is incorrect because a urine culture does not establish an inherited hemoglobinopathy. Correct Answer: A

Question: A nurse assesses a child with sickle cell disease who has fever, increasing fatigue, pallor, and a positive blood culture. Which action best addresses the immediate clinical concern? Answer Choices: A) Delay antimicrobial therapy until the child develops hypotension because fever is expected during sickle cell crises. B) Promptly notify the provider, obtain ordered cultures without unnecessary treatment delays, and administer prescribed antibiotics. C) Administer hydroxyurea as the sole treatment because it directly eliminates the infectious organism. D) Restrict fluid intake to reduce the risk of bloodstream infection spreading to other organs.

Option A is incorrect because fever in a child with sickle cell disease can indicate a serious infection and requires prompt evaluation. Option B is correct because infection can become life-threatening in sickle cell disease, particularly when splenic function is impaired. Appropriate cultures, prompt prescribed antibiotics, and close monitoring are essential. Option C is incorrect because hydroxyurea is a disease-modifying medication and does not treat an acute bacterial infection. Option D is incorrect because fluid restriction does not treat infection and may worsen dehydration. Correct Answer: B

Question: A nurse is teaching the parents of a child with sickle cell disease about preventing future crises. Which instruction is most appropriate? Answer Choices: A) Avoid drinking fluids during exercise to prevent excessive changes in blood volume. B) Maintain appropriate hydration, avoid known triggers such as cold exposure and severe hypoxia, and seek prompt evaluation for signs of infection. C) Encourage prolonged strenuous exercise during illness to improve oxygen delivery to tissues. D) Stop prescribed preventive medications whenever the child is free of pain.

Option A is incorrect because dehydration can promote sickling and increase the risk of vaso-occlusion. Option B is correct because appropriate hydration, avoiding precipitating factors, and prompt evaluation of infection are important preventive strategies identified in the supplied PDF. Option C is incorrect because strenuous exercise during illness can increase physiologic oxygen demand and worsen the risk of a crisis. Option D is incorrect because preventive medications should be taken as prescribed, even when the child is not experiencing pain. Correct Answer: B

Question: A nurse is assessing a client with sickle cell disease who has recurrent leg ulcers. Which intervention is most consistent with the supplied nursing material? Answer Choices: A) Keep the affected legs dependent at all times and withhold analgesia to improve peripheral perfusion. B) Provide prescribed analgesia, apply ordered topical treatments, and elevate the affected leg or legs to reduce edema. C) Apply cold compresses directly to the ulcers to prevent further sickling. D) Avoid wound assessment because skin ulcers are an expected and harmless manifestation of the disease.

Option A is incorrect because withholding analgesia is inappropriate, and maintaining a dependent position at all times does not reflect the supplied wound-care recommendations. Option B is correct because the PDF identifies analgesia, prescribed topical treatment, and elevation of affected legs to reduce edema as interventions for leg ulcers. Option C is incorrect because cold exposure can promote sickling and is discouraged in the supplied nursing material. Option D is incorrect because ulcers require assessment and treatment to reduce pain, infection risk, and tissue damage. Correct Answer: B

Question: A nurse assesses a client with sickle cell disease who reports reduced exercise tolerance and worsening fatigue. The client has a low hemoglobin concentration and an increased reticulocyte count. Which interpretation is most appropriate? Answer Choices: A) The increased reticulocyte count indicates that the bone marrow is responding to ongoing erythrocyte destruction, although anemia persists. B) The increased reticulocyte count confirms that the client has developed an aplastic crisis. C) The low hemoglobin concentration proves that the client has iron deficiency rather than hemolytic anemia. D) The laboratory findings demonstrate that erythrocyte destruction has stopped and oxygen-carrying capacity is normal.

Option A is correct because chronic hemolysis in sickle cell disease reduces circulating erythrocytes, prompting compensatory reticulocyte production. The client can remain anemic despite this response. Option B is incorrect because aplastic crisis is typically associated with an inadequate reticulocyte response. Option C is incorrect because low hemoglobin alone cannot distinguish iron deficiency from hemolytic anemia. Option D is incorrect because persistent low hemoglobin indicates reduced oxygen-carrying capacity, and an increased reticulocyte count does not prove that hemolysis has stopped. Correct Answer: A

Question: A nurse evaluates a child with sickle cell disease who has recurrent episodes of bone pain and is at risk for avascular necrosis. Which pathophysiologic mechanism best explains this complication? Answer Choices: A) Repeated ischemia from sickled erythrocyte obstruction damages bone tissue and can lead to infarction and necrosis. B) Excessive calcium absorption causes bone tissue to become brittle and spontaneously fracture. C) Decreased bilirubin production directly causes bone marrow expansion and joint destruction. D) Increased platelet production dissolves the bone's blood supply and produces painless tissue loss.

Option A is correct because sickled erythrocytes can obstruct small vessels supplying bone, causing ischemia and infarction. Repeated or prolonged ischemia can result in avascular necrosis. Option B is incorrect because increased calcium absorption is not the mechanism described for sickle cell-related bone necrosis. Option C is incorrect because bilirubin production does not directly cause the ischemic bone injury associated with sickle cell disease. Option D is incorrect because platelet production does not dissolve bone blood vessels, and the process is commonly associated with pain. Correct Answer: A

Question: A nurse is planning discharge teaching for an adolescent with sickle cell disease who wants to participate in sports. Which response is most appropriate? Answer Choices: A) "You should avoid all physical and social activities because any exercise inevitably causes a crisis." B) "You can discuss an individualized activity plan, maintain hydration, avoid excessive exertion and severe hypoxia, and report concerning symptoms promptly." C) "You should restrict fluids before sports so that you do not need to interrupt activity to urinate." D) "You can safely ignore new chest pain or shortness of breath if these symptoms occur after exercise."

Option A is incorrect because complete avoidance of activity is unnecessarily restrictive and may negatively affect social development and quality of life. Option B is correct because the supplied PDF encourages appropriate participation in activities while avoiding triggers such as dehydration, excessive exertion, and low-oxygen environments. Individualized planning helps balance safety and normal development. Option C is incorrect because fluid restriction can promote dehydration and sickling. Option D is incorrect because chest pain and shortness of breath can indicate serious complications and require prompt evaluation. Correct Answer: B

Question: A nurse is assessing a child with sickle cell disease whose parents report that the child has become increasingly irritable and is eating less than usual. The child has a history of repeated painful crises. Which nursing approach is most appropriate? Answer Choices: A) Assess only the child's hemoglobin level because behavioral changes are unrelated to chronic disease. B) Perform a comprehensive assessment that includes pain, hydration, oxygenation, infection symptoms, nutrition, growth, and family coping. C) Attribute all behavioral changes to intentional noncompliance and focus exclusively on discipline. D) Recommend eliminating all school and recreational activities until adulthood to prevent future complications.

Option A is incorrect because irritability and reduced intake can be associated with pain, illness, dehydration, or other complications and require broader assessment. Option B is correct because the supplied PDF emphasizes comprehensive physical, nutritional, psychosocial, and family assessments across the lifespan. Option C is incorrect because blaming the child does not identify the underlying cause or support individualized care. Option D is incorrect because the PDF supports encouraging age-appropriate participation and social development rather than unnecessary isolation. Correct Answer: B

Question: A nurse is evaluating a client with sickle cell disease after treatment for a vaso-occlusive crisis. Which outcome best demonstrates effective nursing management? Answer Choices: A) The client continues to have severe uncontrolled pain but has a normal temperature. B) The client reports improved pain control, maintains adequate hydration and oxygenation, and shows no evidence of new complications. C) The client has decreased urine output and worsening tachycardia but reports less anxiety. D) The client develops increasing respiratory distress while the nurse documents that the crisis is resolving.

Option A is incorrect because persistent severe uncontrolled pain indicates that pain management goals have not been achieved. Option B is correct because effective management includes adequate pain relief, hydration, oxygenation, and prevention or early recognition of complications. Option C is incorrect because decreased urine output and tachycardia may indicate worsening dehydration or circulatory compromise. Option D is incorrect because respiratory deterioration may indicate acute chest syndrome or another emergency rather than resolution. Correct Answer: B

Question: A nurse is reviewing the medication history of a client with sickle cell disease who takes voxelotor. Which mechanism is described in the supplied course materials? Answer Choices: A) It prevents P-selectin from binding to blood cells and thereby reduces vascular adhesion. B) It increases hemoglobin's affinity for oxygen, potentially reducing hemoglobin S polymerization and erythrocyte sickling. C) It directly replaces hemoglobin S with donor hemoglobin without requiring blood products. D) It suppresses bacterial growth by interfering with bacterial cell-wall synthesis.

Option A is incorrect because P-selectin inhibition is the mechanism associated with crizanlizumab. Option B is correct because the supplied materials describe voxelotor as a hemoglobin modifier that increases oxygen affinity and may reduce sickling. Option C is incorrect because voxelotor does not replace circulating erythrocytes or provide donor hemoglobin. Option D is incorrect because bacterial cell-wall inhibition describes certain antibiotics rather than voxelotor. Correct Answer: B

Question: A nurse assesses a child with sickle cell disease who has a new fever, vomiting, diarrhea, and reduced oral intake. Which concern should guide the nurse's immediate assessment? Answer Choices: A) The symptoms are harmless because gastrointestinal illnesses do not affect sickling. B) Fluid loss may cause dehydration, and infection or dehydration can precipitate a crisis and worsen the child's condition. C) The child is protected from infection because sickled erythrocytes destroy bacteria. D) Reduced oral intake should be encouraged until the fever resolves to prevent excessive fluid volume.

Option A is incorrect because vomiting, diarrhea, and infection can cause dehydration and precipitate a sickle cell crisis. Option B is correct because the supplied PDF identifies infection, nausea, vomiting, and dehydration as potential triggers or contributors to crises. Assessment of hydration and prompt evaluation of infection are important. Option C is incorrect because sickle cell disease does not protect against infection and may increase the risk of severe infection. Option D is incorrect because withholding fluids can worsen dehydration and increase the risk of sickling. Correct Answer: B

Question: A nurse is reviewing the plan of care for a child with sickle cell disease who is admitted with a painful crisis. Which nursing diagnosis is most directly supported by severe pain, guarding, and reduced movement? Answer Choices: A) Chronic pain related exclusively to psychological distress. B) Acute pain related to tissue ischemia from sickled erythrocyte vaso-occlusion. C) Ineffective airway clearance related to excess pulmonary secretions. D) Impaired skin integrity related to an existing pressure injury, even when no skin damage is present.

Option A is incorrect because the current presentation supports acute pain related to an identifiable ischemic process, not pain attributed exclusively to psychological distress. Option B is correct because vaso-occlusion causes ischemia and tissue injury, producing acute severe pain and guarding. Option C is incorrect because the described findings do not establish excess pulmonary secretions or ineffective airway clearance. Option D is incorrect because reduced movement alone does not establish an existing pressure injury. Correct Answer: B

Question: A nurse is caring for a child with sickle cell disease who has a history of splenectomy following life-threatening splenic sequestration. Which teaching point is most important for the family? Answer Choices: A) "Your child no longer needs vaccinations because removal of the spleen eliminates the risk of infection." B) "Your child remains at increased risk for serious infection, so follow prescribed antibiotic guidance, maintain recommended vaccinations, and seek prompt evaluation for fever." C) "You can stop all follow-up appointments because splenectomy cures the inherited hemoglobin disorder." D) "Your child should avoid all fluids during fever to prevent swelling of the remaining organs."

Option A is incorrect because splenectomy does not eliminate infection risk; impaired splenic function can increase susceptibility to serious infections. Option B is correct because infection prevention remains important after splenectomy, including prescribed prophylaxis, vaccination, and prompt evaluation of fever. Option C is incorrect because splenectomy treats a complication but does not correct the inherited hemoglobin disorder. Option D is incorrect because fluid restriction can worsen dehydration and does not prevent infection. Correct Answer: B

Question: A nurse is teaching a client with sickle cell disease about the potential role of hematopoietic stem cell transplantation. Which statement best reflects the supplied course materials? Answer Choices: A) It is a potential curative treatment option, although recurrence of disease and other transplant-related risks must be considered. B) It permanently prevents all complications in every recipient without requiring follow-up. C) It treats acute pain only and has no effect on the underlying disease process. D) It eliminates the need for compatibility assessment because the recipient's own hemoglobin S gene is always corrected during any transfusion.

Option A is correct because the supplied slides and PDF describe bone marrow or hematopoietic stem cell transplantation as a potential curative approach, while noting that disease recurrence can occur and transplantation requires careful consideration. Option B is incorrect because transplantation does not guarantee freedom from all complications and requires follow-up. Option C is incorrect because transplantation is intended to address the underlying hematopoietic disease process rather than simply provide acute analgesia. Option D is incorrect because ordinary transfusion does not correct the recipient's inherited mutation, and transplant procedures involve specific compatibility and risk considerations. Correct Answer: A

Question: A nurse is caring for a child with sickle cell disease who has new respiratory symptoms and suspected acute chest syndrome. Which assessment finding would most strongly support this diagnosis? Answer Choices: A) Isolated painful swelling of the hands and feet with normal respiratory status. B) Fever, chest pain, cough or dyspnea, hypoxemia, and new pulmonary infiltrates. C) Sudden splenic enlargement accompanied by pallor, hypotension, and a rapidly falling hemoglobin level. D) Marked anemia with a decreased reticulocyte count but no respiratory findings.

Option A is incorrect because painful swelling of the hands and feet is more consistent with dactylitis or peripheral vaso-occlusion. Option B is correct because acute chest syndrome is associated with pulmonary infiltrates and symptoms such as fever, chest pain, cough, dyspnea, and hypoxemia. Option C is incorrect because this pattern suggests splenic sequestration. Option D is incorrect because marked anemia with a decreased reticulocyte count suggests aplastic crisis rather than acute chest syndrome. Correct Answer: B

Question: A nurse is developing a care plan for a child with sickle cell disease who has repeated hospitalizations and difficulty attending school. Which intervention best addresses the child's psychosocial and developmental needs? Answer Choices: A) Discourage all peer interaction to reduce the possibility of emotional stress. B) Encourage age-appropriate social activities when safe, assess family coping, and connect the family with support resources. C) Focus exclusively on laboratory values because social development does not affect chronic disease management. D) Advise the family to avoid discussing the disease with the child to prevent anxiety.

Option A is incorrect because unnecessary isolation can impair social development and emotional well-being. Option B is correct because the supplied PDF emphasizes family support, assessment of psychosocial needs, appropriate social interaction, and referrals to resources. Option C is incorrect because comprehensive sickle cell care includes psychosocial and developmental considerations. Option D is incorrect because age-appropriate education can help children understand the condition and recognize symptoms that require reporting. Correct Answer: B

Question: A nurse evaluates the effectiveness of teaching provided to the parents of a child with sickle cell disease. Which parental statement best demonstrates understanding of when to seek medical care? Answer Choices: A) "We will wait until the next scheduled appointment if our child develops a fever but is still playing." B) "We will contact the healthcare provider promptly for fever, breathing difficulty, severe or unusual pain, or signs of dehydration." C) "We will use cold compresses for every painful episode and seek care only if they do not work." D) "We will stop prescribed medications during illness because the body needs time to recover."

Option A is incorrect because fever can indicate a serious infection in a child with sickle cell disease and should not be ignored because the child appears active. Option B is correct because fever, respiratory symptoms, unusual or severe pain, and dehydration can signal serious complications and warrant prompt assessment. Option C is incorrect because cold compresses can promote sickling and are discouraged in the supplied material. Option D is incorrect because prescribed medications should not be stopped without appropriate clinical guidance. Correct Answer: B

Question: A nurse is assessing a client with sickle cell disease who is receiving oxygen during a crisis. Which principle should guide oxygen administration? Answer Choices: A) Oxygen should always be withheld because it causes hemoglobin S to polymerize. B) Oxygen should be administered when indicated by the client's oxygenation status and prescribed treatment plan, with continued respiratory assessment. C) Oxygen should replace all hydration and analgesic interventions because hypoxemia is the only cause of sickle cell pain. D) Oxygen should be discontinued whenever the client reports less pain, regardless of oxygen saturation.

Option A is incorrect because oxygen is used to correct hypoxemia and support tissue oxygenation when indicated; it does not cause the deoxygenation-related polymerization described in sickle cell pathophysiology. Option B is correct because oxygenation is an important component of sickle cell crisis management, and administration should be guided by the patient's condition and orders. Option C is incorrect because oxygen does not replace hydration, analgesia, or treatment of other complications. Option D is incorrect because oxygen therapy should be adjusted according to clinical assessment and prescribed parameters rather than pain relief alone. Correct Answer: B

Question: A nurse reviews the results of a transcranial Doppler study for a child with sickle cell disease. Why is this test included in the child's care plan? Answer Choices: A) To identify the exact quantity of iron stored in the liver after repeated transfusions. B) To assess cerebral blood-flow velocity and help identify children at increased risk of stroke. C) To confirm the presence of bacterial infection in the bloodstream. D) To measure the degree of splenic enlargement during an acute sequestration crisis.

Option A is incorrect because assessment of iron accumulation requires different testing. Option B is correct because transcranial Doppler ultrasound is used in children with sickle cell disease to assess cerebral blood-flow velocity and help identify increased stroke risk. Option C is incorrect because blood cultures, not transcranial Doppler studies, are used to identify bloodstream pathogens. Option D is incorrect because splenic size is evaluated through physical examination and appropriate abdominal imaging, not transcranial Doppler. Correct Answer: B

Question: A nurse is caring for a child with sickle cell disease who has received repeated transfusions and now has evidence of iron overload. Which treatment concept should the nurse recognize? Answer Choices: A) Iron chelation therapy may be prescribed to promote removal of excess iron accumulated from repeated transfusions. B) Hydroxyurea directly binds all excess iron and removes it through the urine. C) Crizanlizumab permanently eliminates stored iron by preventing P-selectin adhesion. D) Additional transfusions are the only possible treatment because iron overload cannot be managed medically.

Option A is correct because the supplied PDF explains that iron chelation medications may be used to promote iron excretion in patients who develop transfusion-related iron overload. Option B is incorrect because hydroxyurea is used to reduce sickle cell complications and does not directly chelate excess iron. Option C is incorrect because crizanlizumab targets P-selectin-mediated adhesion and does not remove stored iron. Option D is incorrect because iron overload can be managed with chelation therapy when indicated. Correct Answer: A

Question: A nurse is planning care for an infant with sickle cell disease who is too young to describe pain verbally. Which assessment approach is most appropriate during a suspected pain crisis? Answer Choices: A) Rely only on the infant's verbal pain rating because behavioral observations are unreliable. B) Use an age-appropriate pain assessment tool and observe crying, facial expression, movement, guarding, and response to comfort measures. C) Withhold analgesia until the infant can identify the exact location of the pain. D) Assume that the infant is not experiencing pain unless the oxygen saturation falls below normal.

Option A is incorrect because infants cannot reliably provide verbal numeric pain ratings, and behavioral observations are essential. Option B is correct because the supplied PDF emphasizes developmentally appropriate pain assessment, including observation of nonverbal cues and use of suitable assessment tools. Option C is incorrect because inability to describe pain does not justify withholding assessment or prescribed treatment. Option D is incorrect because pain can occur without hypoxemia, and oxygen saturation alone is not a pain assessment tool. Correct Answer: B

Question: A nurse is reviewing the concept of cellular regulation with a student caring for a client with sickle cell disease. Which statement best connects the disease process to cellular regulation? Answer Choices: A) The disorder is caused solely by an acquired platelet abnormality that prevents normal clot formation. B) An inherited hemoglobin abnormality changes erythrocyte shape and flexibility, contributing to hemolysis, vascular obstruction, ischemia, and organ damage. C) The disorder results from a deficiency of insulin that prevents glucose from entering erythrocytes. D) The disorder is caused by excessive production of normal hemoglobin that permanently increases erythrocyte lifespan.

Option A is incorrect because sickle cell disease is an inherited hemoglobinopathy, not solely a platelet disorder. Option B is correct because the abnormal hemoglobin S alters erythrocyte behavior during deoxygenation, promoting sickling, hemolysis, microvascular obstruction, and tissue injury. These processes directly connect cellular dysfunction with systemic manifestations. Option C is incorrect because insulin deficiency is not the underlying cause of sickle cell disease. Option D is incorrect because sickled erythrocytes have a shortened lifespan rather than a permanently increased lifespan. Correct Answer: B

Question: A nurse is caring for a client with sickle cell disease who has sudden severe pain and new signs of circulatory instability. Which approach best reflects appropriate nursing prioritization? Answer Choices: A) Complete all routine admission documentation before evaluating the circulatory changes. B) Assess airway, breathing, circulation, vital signs, pain, and possible complications immediately, while escalating care for instability. C) Focus exclusively on the client's long-term nutrition plan because malnutrition contributes to chronic disease. D) Delay reassessment until the next scheduled medication administration.

Option A is incorrect because documentation should not delay assessment and treatment of possible instability. Option B is correct because immediate evaluation of airway, breathing, circulation, vital signs, pain, and potential life-threatening complications is consistent with priority nursing care. Option C is incorrect because nutrition is important but does not take precedence over acute circulatory compromise. Option D is incorrect because delaying reassessment can allow a serious complication to progress. Correct Answer: B

Question: A nurse is caring for a client with sickle cell disease who reports severe pain despite receiving prescribed analgesia. Which action is most appropriate? Answer Choices: A) Document the pain as exaggerated because the prescribed analgesic has already been administered. B) Reassess pain intensity, timing, response to medication, respiratory status, and other clinical findings, then follow the prescribed pain-management plan and escalate inadequate relief. C) Stop all analgesics because persistent pain indicates medication toxicity. D) Apply cold compresses and discontinue hydration until the pain subsides.

Option A is incorrect because persistent pain requires reassessment rather than judgment about the client's report. Option B is correct because the nurse must evaluate pain response, monitor for medication-related adverse effects, reassess the clinical condition, and seek adjustment of treatment when relief is inadequate. Option C is incorrect because persistent pain alone does not establish medication toxicity or justify abruptly stopping all analgesia. Option D is incorrect because cold exposure can promote sickling, and withholding hydration can worsen dehydration. Correct Answer: B

Question: A nurse is preparing an individualized care plan for a child with sickle cell disease who has recurrent crises and poor weight gain. Which intervention best integrates nutritional and disease-management priorities? Answer Choices: A) Recommend a low-protein diet and restrict calorie intake to decrease erythrocyte production. B) Assess nutritional status and growth, support a high-calorie and high-protein diet as indicated, and evaluate for vitamin and macronutrient deficiencies. C) Avoid all vitamin supplementation because nutritional deficiencies do not occur in sickle cell disease. D) Replace meals with iron supplements regardless of laboratory findings and dietary assessment.

Option A is incorrect because children with sickle cell disease may have increased energy and protein requirements. Option B is correct because the PDF identifies increased metabolic demands and potential nutritional deficiencies, supporting assessment of growth and individualized nutritional management. Option C is incorrect because deficiencies may occur and should be evaluated. Option D is incorrect because iron supplementation should be based on appropriate assessment rather than prescribed indiscriminately. Correct Answer: B

Question: A nurse is caring for a child with sickle cell disease who develops increasing lethargy, poor perfusion, hypotension, and reduced urine output. Which nursing action is the highest priority? Answer Choices: A) Encourage oral fluids and reassess in several hours without notifying the healthcare team. B) Recognize possible circulatory compromise, initiate an urgent assessment, notify the healthcare team, and implement emergency interventions as indicated. C) Document the findings as typical of chronic anemia and continue routine observation. D) Administer the next scheduled disease-modifying medication before reassessing vital signs.

Option A is incorrect because the findings suggest possible serious circulatory compromise and require immediate evaluation rather than delayed reassessment. Option B is correct because hypotension, poor perfusion, lethargy, and reduced urine output may indicate shock or another life-threatening complication, including splenic sequestration in an appropriate clinical context. Option C is incorrect because these acute findings cannot safely be attributed to chronic anemia. Option D is incorrect because routine medication administration does not take priority over an unstable clinical presentation. Correct Answer: B

Question: A nurse is teaching a family about the difference between a vaso-occlusive crisis and an aplastic crisis. Which statement best distinguishes these complications? Answer Choices: A) Vaso-occlusive crisis is primarily caused by impaired erythrocyte production, whereas aplastic crisis is caused by obstruction of small blood vessels. B) Vaso-occlusive crisis involves ischemia from sickled erythrocytes obstructing blood flow, whereas aplastic crisis involves decreased erythrocyte production and a reduced reticulocyte response. C) Both conditions are defined by acute splenic enlargement and severe blood pooling. D) Both conditions are characterized by pulmonary infiltrates and acute hypoxemia as their defining manifestations.

Option A is incorrect because it reverses the underlying mechanisms of the two complications. Option B is correct because vaso-occlusive crisis results from microvascular obstruction and ischemic pain, whereas aplastic crisis involves reduced erythrocyte production and often presents with a marked hemoglobin decline and low reticulocyte count. Option C is incorrect because acute splenic enlargement and blood pooling characterize splenic sequestration. Option D is incorrect because pulmonary infiltrates and hypoxemia are characteristic concerns in acute chest syndrome. Correct Answer: B

Question: A nurse is reviewing care priorities for a client with sickle cell disease who has an elevated temperature and a new cough. Which additional assessment is most important to help identify a potentially life-threatening complication? Answer Choices: A) Assess respiratory rate, oxygen saturation, work of breathing, chest pain, and evidence of pulmonary infiltrates. B) Assess only the client's appetite and preferred foods. C) Assess the frequency of school attendance over the past month. D) Assess the client's long-term career goals before evaluating current symptoms.

Option A is correct because fever and cough in sickle cell disease require evaluation for infection and acute chest syndrome. Respiratory assessment, oxygenation, chest symptoms, and appropriate diagnostic imaging help identify pulmonary complications promptly. Option B is incorrect because appetite does not take priority over potential respiratory deterioration. Option C is incorrect because school attendance does not establish the severity of an acute respiratory condition. Option D is incorrect because long-term goals are not an immediate priority during possible acute chest syndrome. Correct Answer: A

Question: A nurse is reviewing the course materials with a student who asks why clients with sickle cell disease may experience renal insufficiency. Which explanation is most appropriate? Answer Choices: A) Repeated sickling and vaso-occlusion can impair renal blood flow and cause ischemic injury to kidney tissue. B) Hemoglobin S directly increases insulin secretion, causing irreversible kidney damage in every affected client. C) Chronic hemolysis prevents all blood from reaching the kidneys, resulting in immediate complete renal failure. D) Renal insufficiency is caused exclusively by iron deficiency and is unrelated to sickle cell disease.

Option A is correct because sickled erythrocytes can obstruct small vessels and impair perfusion in multiple organs, including the kidneys, contributing to renal injury over time. Option B is incorrect because insulin secretion is not the mechanism linking sickle cell disease to renal damage. Option C is incorrect because renal complications can develop through repeated ischemic injury, but complete immediate loss of renal blood flow is not the defining mechanism. Option D is incorrect because renal insufficiency is a recognized organ complication of sickle cell disease and is not exclusively caused by iron deficiency. Correct Answer: A

Question: A nurse is caring for a child with sickle cell disease who is receiving an ordered intravenous fluid regimen. Which finding requires the nurse to reassess the fluid plan promptly? Answer Choices: A) Adequate urine output and moist mucous membranes. B) Improved heart rate with resolution of dry mucous membranes. C) New crackles, increasing edema, and worsening respiratory effort. D) The child's report that thirst has decreased after hydration.

Option A is incorrect because adequate urine output and moist mucous membranes are generally consistent with improved hydration. Option B is incorrect because improvement in tachycardia and mucous membrane dryness can indicate correction of dehydration. Option C is correct because crackles, edema, and worsening respiratory effort may indicate fluid overload or a pulmonary complication, requiring prompt reassessment and escalation as appropriate. Option D is incorrect because decreased thirst after hydration can be an expected sign of improving fluid balance, although other findings must still be assessed. Correct Answer: C

Question: A nurse is teaching the parents of a child with sickle cell disease about the importance of follow-up appointments and routine monitoring. Which explanation is most appropriate? Answer Choices: A) Follow-up is needed only when the child is experiencing severe pain because sickle cell disease does not cause complications between crises. B) Regular follow-up helps monitor organ function, growth, treatment effects, stroke risk when indicated, and prevention of complications. C) Routine monitoring is unnecessary once a newborn screening result confirms the diagnosis. D) Follow-up visits can replace all vaccinations, prescribed medications, and family education.

Option A is incorrect because sickle cell disease can cause chronic organ injury and other complications between acute crises. Option B is correct because regular monitoring supports assessment of disease complications, growth and development, treatment effectiveness, and appropriate preventive strategies. Option C is incorrect because diagnosis requires ongoing management rather than ending follow-up. Option D is incorrect because clinic visits complement rather than replace vaccinations, medications, and education. Correct Answer: B

Question: A nurse reviews the history of a client with sickle cell disease who develops worsening anemia and evidence of splenic enlargement. Which explanation best describes why splenic sequestration is especially concerning in children? Answer Choices: A) The spleen can rapidly accumulate a substantial amount of blood, reducing circulating volume and causing severe anemia and shock. B) The spleen permanently stores all hemoglobin S and immediately cures the disease when enlarged. C) Splenic enlargement prevents the development of infection and eliminates the need for antibiotic prophylaxis. D) Splenic sequestration causes only mild fatigue and cannot produce hemodynamic instability.

Option A is correct because splenic sequestration involves acute pooling of blood in the spleen, potentially producing profound anemia, hypovolemia, and shock. The supplied PDF emphasizes that it can be life-threatening and is especially concerning in children. Option B is incorrect because splenic enlargement does not remove the inherited hemoglobin S mutation or cure the disease. Option C is incorrect because splenic dysfunction increases infection risk rather than eliminating it. Option D is incorrect because splenic sequestration can cause rapid circulatory collapse. Correct Answer: A

Question: A nurse is planning education for an adolescent with sickle cell disease who is considering future family planning. Which intervention is most appropriate? Answer Choices: A) Explain that genetic counseling is unnecessary because sickle cell disease is acquired through environmental exposure. B) Offer genetic counseling and explain inheritance patterns so the adolescent can make informed reproductive decisions. C) Advise the adolescent that the condition can be passed to children only if the adolescent has frequent pain crises. D) Recommend avoiding all discussion of inheritance until the adolescent becomes symptomatic.

Option A is incorrect because sickle cell disease is inherited rather than acquired through environmental exposure. Option B is correct because the supplied PDF identifies genetic counseling as a resource for helping individuals and families understand inheritance risks and reproductive choices. Option C is incorrect because transmission of an abnormal hemoglobin gene depends on inherited genotype, not the frequency of pain crises. Option D is incorrect because age-appropriate education and counseling can support informed decisions before symptoms or pregnancy occur. Correct Answer: B

Question: A nurse is caring for a client with sickle cell disease who has been prescribed crizanlizumab. Which assessment is specifically relevant during administration of this medication according to the supplied medication table? Answer Choices: A) Monitor for infusion-site or infusion-related reactions and assess for adverse symptoms such as nausea, joint pain, back pain, or fever. B) Monitor only urine glucose because the medication routinely causes severe hypoglycemia. C) Discontinue all other prescribed sickle cell therapies because crizanlizumab replaces every aspect of disease management. D) Monitor only serum iron because the medication directly removes excess iron from the bloodstream.

Option A is correct because the supplied medication table identifies monitoring during infusion and education about potential adverse symptoms, including nausea, joint pain, back pain, and fever. Option B is incorrect because glucose monitoring alone does not reflect the listed nursing considerations. Option C is incorrect because crizanlizumab does not replace all other aspects of sickle cell management. Option D is incorrect because crizanlizumab does not directly remove excess iron. Correct Answer: A

Question: A nurse is caring for a client with sickle cell disease who has a painful crisis and is prescribed both analgesia and hydration. Which outcome best demonstrates that the plan of care is meeting its immediate goals? Answer Choices: A) Pain remains severe, urine output decreases, and the client develops new shortness of breath. B) Pain becomes manageable, urine output is adequate, mucous membranes remain moist, and respiratory status is stable. C) The client becomes increasingly lethargic and hypotensive but reports less anxiety. D) The client develops fever and worsening chest pain while pain medication requirements increase.

Option A is incorrect because uncontrolled pain, reduced urine output, and new respiratory symptoms indicate unresolved problems or possible complications. Option B is correct because manageable pain, adequate urine output, moist mucous membranes, and stable respiratory status are consistent with effective pain management, hydration, and monitoring. Option C is incorrect because lethargy and hypotension suggest possible deterioration even if anxiety decreases. Option D is incorrect because fever and worsening chest pain require urgent evaluation for infection or acute chest syndrome. Correct Answer: B

Question: A nurse is caring for a child with sickle cell disease whose parents ask why a routine ultrasound of the head may be recommended. Which explanation is most appropriate? Answer Choices: A) It assesses cerebral blood flow and helps evaluate stroke risk in children with sickle cell disease. B) It determines whether the child has iron overload from previous transfusions. C) It confirms whether the child has developed an aplastic crisis. D) It identifies the precise genetic mutation in every erythrocyte without laboratory testing.

Option A is correct because the supplied PDF identifies routine cerebral ultrasound screening in children with sickle cell disease as a means of assessing cerebral blood flow and stroke risk. Option B is incorrect because ultrasound of the head does not quantify iron overload. Option C is incorrect because aplastic crisis is evaluated through clinical findings and laboratory tests, including the hemoglobin and reticulocyte count. Option D is incorrect because imaging does not identify the genetic mutation in every erythrocyte. Correct Answer: A

Question: A nurse reviews a client's care plan after a sickle cell crisis and identifies goals related to oxygenation, hydration, pain, infection prevention, nutrition, and psychosocial support. Which action best reflects the evaluation phase of the nursing process? Answer Choices: A) Document the initial assessment findings without comparing them with expected outcomes. B) Compare the client's current findings with established goals, identify unmet needs, and revise interventions as necessary. C) Select new nursing diagnoses before reviewing whether previous interventions were effective. D) End all monitoring as soon as the client's pain begins to improve.

Option A is incorrect because documenting baseline findings alone does not determine whether the care plan has achieved its goals. Option B is correct because evaluation involves comparing actual outcomes with established goals, identifying ongoing problems, and modifying the plan as needed. Option C is incorrect because revision should be guided by assessment and evaluation of the existing plan. Option D is incorrect because pain improvement alone does not establish that oxygenation, hydration, infection prevention, and other goals have been met. Correct Answer: B

Question: A nurse is teaching the parents of a child with sickle cell disease about factors that can precipitate a vaso-occlusive crisis. Which factors should the nurse include in the teaching? Select all that apply. Answer Choices: A) Dehydration following vomiting or diarrhea. B) Exposure to cold temperatures. C) Severe hypoxia or low-oxygen environments. D) Emotional stress and excessive physiologic exertion. E) Maintaining adequate hydration during routine activities. F) Conditions that cause acidosis.

Option A is correct because dehydration increases the risk of sickling and microvascular obstruction. Option B is correct because cold exposure can precipitate vasoconstriction and promote a crisis. Option C is correct because deoxygenation promotes hemoglobin S polymerization and erythrocyte sickling. Option D is correct because emotional stress and increased oxygen demand can contribute to a crisis. Option E is incorrect because maintaining adequate hydration helps reduce the risk of sickling. Option F is correct because acidosis can promote sickling and precipitate vaso-occlusion. Correct Answer: A, B, C, D, F

Question: A nurse assesses a child with sickle cell disease who presents with worsening symptoms. Which findings are consistent with complications associated with sickle cell disease? Select all that apply. Answer Choices: A) Pallor and fatigue associated with chronic hemolytic anemia. B) Jaundice associated with increased erythrocyte destruction. C) Priapism associated with impaired blood flow. D) Renal insufficiency associated with organ injury. E) Gallstones associated with chronic hemolysis. F) Permanently increased erythrocyte lifespan caused by hemoglobin S.

Option A is correct because chronic hemolysis reduces circulating erythrocytes and contributes to anemia, pallor, and fatigue. Option B is correct because erythrocyte breakdown increases bilirubin production and can cause jaundice. Option C is correct because vaso-occlusion can impair penile circulation and cause priapism. Option D is correct because repeated vascular obstruction and ischemia can contribute to renal injury. Option E is correct because chronic hemolysis can contribute to pigment gallstone formation. Option F is incorrect because sickled erythrocytes have a shortened lifespan rather than a permanently increased lifespan. Correct Answer: A, B, C, D, E

Question: A nurse is caring for a child with sickle cell disease who develops fever, chest pain, cough, tachypnea, and decreasing oxygen saturation. Which interventions are appropriate? Select all that apply. Answer Choices: A) Assess respiratory status, including oxygen saturation and work of breathing. B) Promptly notify the healthcare team about suspected acute chest syndrome. C) Administer oxygen as indicated or prescribed. D) Delay evaluation until the next scheduled vital-sign assessment. E) Anticipate diagnostic evaluation for pulmonary infiltrates. F) Encourage strenuous activity to improve tissue oxygen delivery.

Option A is correct because respiratory assessment helps identify hypoxemia and worsening pulmonary compromise. Option B is correct because acute chest syndrome is potentially life-threatening and requires urgent evaluation. Option C is correct because oxygen may be necessary to correct hypoxemia and support tissue oxygenation. Option D is incorrect because delaying assessment may allow a serious complication to progress. Option E is correct because pulmonary infiltrates are associated with acute chest syndrome and support diagnostic evaluation. Option F is incorrect because strenuous activity increases oxygen demand and is inappropriate during acute respiratory deterioration. Correct Answer: A, B, C, E

Question: A nurse is reviewing laboratory results for a client with sickle cell disease. Which findings are consistent with chronic hemolytic anemia? Select all that apply. Answer Choices: A) Decreased hemoglobin concentration. B) Increased indirect bilirubin. C) Increased reticulocyte count when bone marrow compensation is intact. D) Increased erythrocyte lifespan. E) Possible pallor and fatigue. F) Complete absence of erythrocyte destruction.

Option A is correct because ongoing erythrocyte destruction reduces circulating hemoglobin. Option B is correct because the breakdown of erythrocytes increases bilirubin production. Option C is correct because the bone marrow generally responds to hemolysis by increasing erythrocyte production and releasing more reticulocytes. Option D is incorrect because sickled erythrocytes have a shortened lifespan. Option E is correct because anemia reduces oxygen-carrying capacity and can produce pallor and fatigue. Option F is incorrect because chronic hemolysis is a central feature of sickle cell anemia. Correct Answer: A, B, C, E

Question: A nurse is evaluating a child with sickle cell disease who develops sudden pallor, profound fatigue, and worsening weakness. Which findings support a possible aplastic crisis? Select all that apply. Answer Choices: A) A substantial decrease in hemoglobin compared with baseline. B) A markedly decreased reticulocyte count. C) Evidence of reduced erythrocyte production. D) Increased reticulocyte production as the defining laboratory feature. E) A recent viral illness. F) New chest pain and pulmonary infiltrates as the defining features.

Option A is correct because an aplastic crisis can cause an abrupt and substantial decline in hemoglobin. Option B is correct because decreased reticulocyte production reflects an inadequate bone marrow response. Option C is correct because aplastic crisis involves suppression of erythrocyte production. Option D is incorrect because a markedly decreased reticulocyte count, rather than an increased count, is characteristic of an aplastic crisis. Option E is correct because viral illness can precipitate temporary suppression of erythrocyte production. Option F is incorrect because chest pain and pulmonary infiltrates are more characteristic of acute chest syndrome. Correct Answer: A, B, C, E

Question: A nurse is caring for a child with sickle cell disease who suddenly develops splenic enlargement, tachycardia, hypotension, and worsening pallor. Which findings or interventions are appropriate? Select all that apply. Answer Choices: A) Recognize possible splenic sequestration. B) Recognize the risk of severe anemia and hypovolemic shock. C) Notify the healthcare team and initiate urgent assessment and treatment. D) Reassure the parents that splenic enlargement is always a harmless chronic finding. E) Monitor vital signs and evidence of circulatory compromise. F) Delay intervention until the child develops respiratory failure.

Option A is correct because acute splenic enlargement with circulatory changes is concerning for splenic sequestration. Option B is correct because blood pooling in the spleen can rapidly reduce circulating blood volume and hemoglobin. Option C is correct because splenic sequestration can progress rapidly and requires urgent intervention. Option D is incorrect because acute splenic sequestration can be life-threatening. Option E is correct because close monitoring helps identify deterioration and assess treatment response. Option F is incorrect because intervention must not be delayed until another life-threatening complication develops. Correct Answer: A, B, C, E

Question: A nurse is teaching a client with sickle cell disease about prescribed hydroxyurea. Which statements accurately describe the medication and its nursing considerations? Select all that apply. Answer Choices: A) It can increase fetal hemoglobin production. B) It can reduce the frequency of painful crises. C) Complete blood count monitoring is important. D) Renal and liver function may require monitoring. E) The client should report signs of infection or unusual bleeding. F) It permanently removes the inherited hemoglobin S mutation from every erythrocyte.

Option A is correct because hydroxyurea increases fetal hemoglobin, which helps reduce sickling. Option B is correct because hydroxyurea can decrease painful crises and other sickle cell complications. Option C is correct because hematologic monitoring is important during therapy. Option D is correct because the supplied medication table identifies renal and liver function monitoring. Option E is correct because infection and bleeding are important concerns to monitor for during treatment. Option F is incorrect because hydroxyurea does not permanently correct the inherited mutation. Correct Answer: A, B, C, D, E

Question: A nurse is educating a client with sickle cell disease about the possible long-term complications of repeated blood transfusions. Which complications should the nurse discuss? Select all that apply. Answer Choices: A) Iron overload. B) Alloimmunization. C) Development of antibodies against donor erythrocyte antigens. D) Guaranteed permanent correction of the inherited mutation. E) Potential need for iron chelation therapy. F) Elimination of all future transfusion reactions.

Option A is correct because repeated transfusions can cause excess iron to accumulate in tissues and organs. Option B is correct because alloimmunization is a recognized complication of transfusion therapy. Option C is correct because the immune system may develop antibodies against donor erythrocyte antigens. Option D is incorrect because transfusions do not permanently correct the inherited genetic mutation. Option E is correct because iron chelation may be prescribed to promote removal of excess iron. Option F is incorrect because repeated transfusions do not eliminate the risk of future reactions. Correct Answer: A, B, C, E

Question: A nurse is developing a care plan for a child admitted with a vaso-occlusive crisis. Which interventions are appropriate? Select all that apply. Answer Choices: A) Assess pain using an age-appropriate pain scale. B) Administer prescribed analgesics promptly and reassess the response. C) Monitor hydration status and intake and output. D) Apply cold compresses to painful joints. E) Assess respiratory status and oxygenation. F) Encourage avoidance of dehydration and other known crisis triggers.

Option A is correct because an appropriate pain scale helps establish severity and evaluate treatment response. Option B is correct because timely analgesia is essential for managing severe ischemic pain. Option C is correct because dehydration can worsen sickling, making fluid-balance monitoring important. Option D is incorrect because cold exposure can promote sickling and is discouraged in the supplied nursing material. Option E is correct because respiratory deterioration can indicate acute chest syndrome or another serious complication. Option F is correct because avoiding dehydration and other precipitating factors helps reduce the risk of future crises. Correct Answer: A, B, C, E, F

Question: A nurse is teaching the parents of a young child with sickle cell disease about infection prevention. Which instructions are appropriate? Select all that apply. Answer Choices: A) Maintain recommended vaccinations. B) Administer prescribed prophylactic antibiotics as directed. C) Seek prompt medical evaluation if the child develops a fever. D) Assume that the child has normal splenic function unless abdominal pain occurs. E) Follow infection-prevention practices and prescribed treatment plans. F) Stop preventive antibiotics whenever the child appears healthy without consulting the healthcare provider.

Option A is correct because recommended vaccinations help prevent serious infections. Option B is correct because prophylactic antibiotics may be prescribed for young children with sickle cell disease to reduce infection risk. Option C is correct because fever can indicate a serious infection and requires prompt evaluation. Option D is incorrect because splenic dysfunction can occur without obvious abdominal symptoms. Option E is correct because infection prevention and adherence to prescribed treatment reduce the risk of serious complications. Option F is incorrect because preventive medications should not be stopped without guidance from the healthcare provider. Correct Answer: A, B, C, E

Question: A nurse is assessing a child with sickle cell disease who has new neurologic symptoms. Which findings should prompt immediate evaluation for possible stroke? Select all that apply. Answer Choices: A) Sudden facial asymmetry. B) New unilateral arm or leg weakness. C) Sudden severe headache accompanied by neurologic changes. D) New difficulty speaking or understanding speech. E) Mild thirst that resolves after drinking water. F) New confusion or altered level of consciousness.

Option A is correct because sudden facial asymmetry can indicate a focal neurologic deficit. Option B is correct because unilateral weakness is concerning for stroke. Option C is correct because a sudden severe headache with neurologic changes requires emergency assessment. Option D is correct because new speech abnormalities can indicate cerebral ischemia. Option E is incorrect because isolated thirst relieved by hydration is not a typical stroke presentation. Option F is correct because new confusion or altered consciousness may indicate a serious neurologic complication. Correct Answer: A, B, C, D, F

Question: A nurse is teaching a client with sickle cell disease about crizanlizumab. Which statements are accurate? Select all that apply. Answer Choices: A) It is a P-selectin inhibitor. B) It reduces adhesion-related processes that contribute to vaso-occlusion. C) It may reduce the frequency of painful crises. D) Infusion-related reactions should be monitored for. E) It directly replaces circulating hemoglobin S with normal donor hemoglobin. F) The client should be taught to report concerning adverse symptoms, including fever or significant new pain.

Option A is correct because crizanlizumab inhibits P-selectin. Option B is correct because reducing blood cell adhesion helps decrease vascular obstruction and inflammation. Option C is correct because the medication is intended to reduce vaso-occlusive events and associated painful crises. Option D is correct because infusion monitoring is identified in the supplied medication table. Option E is incorrect because crizanlizumab does not replace circulating erythrocytes or hemoglobin. Option F is correct because the medication information identifies symptoms such as fever and new pain that warrant clinical attention. Correct Answer: A, B, C, D, F

Question: A nurse is reviewing the pathophysiology of sickle cell disease with a student. Which statements accurately describe the disease process? Select all that apply. Answer Choices: A) Sickle cell disease is an inherited hemoglobinopathy. B) Deoxygenation of hemoglobin S promotes erythrocyte sickling. C) Sickled erythrocytes can obstruct small blood vessels. D) Vascular obstruction can produce ischemia and organ damage. E) Sickled erythrocytes generally survive longer than normal erythrocytes. F) Hemolysis contributes to chronic anemia.

Option A is correct because sickle cell disease results from an inherited abnormality of hemoglobin. Option B is correct because deoxygenation promotes hemoglobin S polymerization and erythrocyte deformation. Option C is correct because rigid sickled cells can obstruct microvascular circulation. Option D is correct because reduced tissue perfusion can cause ischemia, infarction, and organ damage. Option E is incorrect because sickled erythrocytes have a substantially shortened lifespan. Option F is correct because accelerated erythrocyte destruction contributes to chronic hemolytic anemia. Correct Answer: A, B, C, D, F

Question: A nurse is caring for a client with sickle cell disease who is receiving intravenous fluids. Which findings indicate that the nurse should reassess the fluid-management plan? Select all that apply. Answer Choices: A) New crackles on lung auscultation. B) Increasing peripheral edema. C) Worsening respiratory effort. D) Adequate urine output with moist mucous membranes. E) Evidence of fluid overload during treatment. F) Improved thirst with stable vital signs and no signs of dehydration.

Option A is correct because new crackles may indicate fluid accumulation or a pulmonary complication. Option B is correct because increasing edema can indicate excess fluid volume. Option C is correct because worsening respiratory effort requires immediate assessment and may indicate fluid overload or acute chest syndrome. Option D is incorrect because adequate urine output and moist mucous membranes are generally reassuring hydration findings. Option E is correct because fluid overload requires reassessment of the prescribed regimen and the client's clinical condition. Option F is incorrect because improved thirst and stable vital signs without dehydration do not independently indicate a need to change the fluid plan. Correct Answer: A, B, C, E

Question: A nurse is reviewing the lifespan considerations for sickle cell disease with the parents of a newborn. Which statements should the nurse include? Select all that apply. Answer Choices: A) Newborn screening is used to identify sickle cell disease. B) Infants may initially be asymptomatic because fetal hemoglobin reduces sickling. C) Symptoms commonly become more apparent as fetal hemoglobin levels decline during early infancy. D) Children with sickle cell disease have no risk of stroke before adolescence. E) Infection prevention is particularly important in young children with impaired splenic function. F) A child with sickle cell disease cannot experience complications until the first painful crisis.

Option A is correct because newborn screening is a standard method of identifying sickle cell disease. Option B is correct because fetal hemoglobin inhibits hemoglobin S polymerization. Option C is correct because declining fetal hemoglobin allows sickling-related manifestations to become more apparent. Option D is incorrect because children can experience stroke during childhood, and screening may be indicated early in life. Option E is correct because impaired splenic function increases susceptibility to serious infection. Option F is incorrect because complications such as infection or acute chest syndrome can occur without a previously recognized painful crisis. Correct Answer: A, B, C, E

Question: A nurse is reviewing the care of a pregnant client with sickle cell disease. Which risks or management considerations should the nurse recognize? Select all that apply. Answer Choices: A) Pain crises may occur more frequently. B) Symptoms and complications may become more severe. C) The pregnancy is associated with increased risk of adverse maternal or fetal outcomes. D) The client no longer requires routine monitoring because pregnancy improves sickling. E) The client may have increased risk of preterm delivery and low birth weight. F) Sickle cell disease is cured by the physiologic changes of pregnancy.

Option A is correct because the supplied lifespan materials identify increased frequency of pain crises during pregnancy. Option B is correct because symptoms may be more intense and complications more likely. Option C is correct because pregnancy with sickle cell disease is associated with increased maternal and fetal risk. Option D is incorrect because close monitoring remains important during pregnancy. Option E is correct because the PDF identifies preterm delivery and low birth weight among possible adverse outcomes. Option F is incorrect because pregnancy does not cure the inherited disorder. Correct Answer: A, B, C, E

Question: A nurse is planning care for an older adult with sickle cell disease. Which considerations are appropriate? Select all that apply. Answer Choices: A) Assess for chronic kidney disease and other organ complications. B) Evaluate for iron deficiency, chronic inflammation, and other causes of anemia. C) Recognize that older adults may have reduced physiologic reserve. D) Assume that sickle cell disease no longer causes complications after middle age. E) Coordinate care among relevant healthcare professionals. F) Recognize that evidence about treatment in older adults may be limited.

Option A is correct because sickle cell disease can cause chronic organ damage, including renal complications. Option B is correct because iron deficiency, chronic inflammation, and kidney disease can contribute to anemia in older adults. Option C is correct because age-related changes can reduce the body's ability to compensate for illness. Option D is incorrect because complications can persist throughout adulthood and into older age. Option E is correct because the supplied PDF identifies multidisciplinary care as important for older adults with sickle cell disease. Option F is correct because the PDF notes limited clinical-trial data specifically addressing older adults with sickle cell disease. Correct Answer: A, B, C, E, F