Congenital Heart Defects

Question: A nurse assesses a 2-month-old infant who has a heart murmur, tachypnea, diaphoresis during feedings, and poor weight gain. The infant has bounding peripheral pulses and a widened pulse pressure. Which congenital heart defect most likely explains these findings? Answer Choices: A) Ventricular septal defect (VSD). B) Patent ductus arteriosus (PDA). C) Tetralogy of Fallot (TOF). D) Aortic stenosis.

Option A is incorrect because a VSD typically produces increased pulmonary blood flow and signs of heart failure, including tachypnea and poor feeding, but bounding pulses and widened pulse pressure are more characteristic of a PDA. Option B is correct because the persistent connection between the aorta and pulmonary artery allows blood to flow from the higher-pressure aorta into the pulmonary artery. This produces increased pulmonary blood flow, increased left-sided cardiac workload, bounding pulses, and widened pulse pressure. Option C is incorrect because TOF decreases pulmonary blood flow and typically produces cyanosis rather than bounding pulses. Option D is incorrect because aortic stenosis obstructs systemic blood flow and may produce diminished peripheral pulses and decreased cardiac output. Correct Answer: B

Question: A nurse explains the pathophysiology of an atrial septal defect (ASD) to the parents of an infant. Which explanation is most accurate? Answer Choices: A) Blood moves from the right atrium into the left atrium because right-sided pressure is higher. B) Blood moves from the left atrium into the right atrium because left-sided pressure is higher. C) Blood moves from the aorta into the pulmonary artery because systemic pressure is higher. D) Blood moves from the left ventricle into the right ventricle because ventricular pressure is higher.

Option A is incorrect because right atrial pressure is normally lower than left atrial pressure, so the usual direction of flow is not right to left. Option B is correct because the opening between the atria allows oxygenated blood to move from the higher-pressure left atrium into the right atrium. This increases right-sided cardiac workload and pulmonary blood flow. Option C is incorrect because this describes the abnormal blood flow associated with a PDA. Option D is incorrect because this describes the usual direction of blood flow through a VSD. Correct Answer: B

Question: A nurse is caring for an infant with a ventricular septal defect (VSD). Which finding most strongly indicates that the defect is producing clinically significant increased pulmonary blood flow? Answer Choices: A) Cyanosis that worsens during crying. B) Tachypnea, diaphoresis, and poor weight gain. C) Decreased pulmonary vascular markings on chest x-ray. D) Clubbing of the fingers and persistent hypoxemia.

Option A is incorrect because worsening cyanosis during crying is more consistent with a defect that decreases pulmonary blood flow, such as TOF. Option B is correct because a significant VSD allows blood to move from the higher-pressure left ventricle into the right ventricle, increasing pulmonary blood flow. The resulting increased cardiac workload can produce tachypnea, diaphoresis during feeding, fatigue, and poor weight gain. Option C is incorrect because decreased pulmonary vascular markings suggest reduced pulmonary blood flow rather than increased flow. Option D is incorrect because clubbing and persistent hypoxemia are associated with chronic cyanotic heart defects. Correct Answer: B

Question: A nurse assesses a newborn diagnosed with patent ductus arteriosus (PDA). Which explanation best describes the abnormal circulation associated with this defect? Answer Choices: A) Blood flows from the pulmonary artery into the aorta because pulmonary pressure is higher. B) Blood flows from the aorta into the pulmonary artery because systemic pressure is higher. C) Blood flows from the right atrium into the left atrium because pulmonary resistance is elevated. D) Blood flows from the right ventricle into the left ventricle because ventricular pressure is reduced.

Option A is incorrect because this is not the typical direction of blood flow after pulmonary vascular resistance decreases following birth. Option B is correct because the ductus arteriosus normally closes after birth. When it remains open, blood flows from the higher-pressure aorta into the lower-pressure pulmonary artery, increasing pulmonary blood flow and cardiac workload. Option C is incorrect because this describes a possible right-to-left atrial shunt rather than a PDA. Option D is incorrect because this is not the typical pathophysiology of a PDA. Correct Answer: B

Question: A nurse is assessing a newborn with a suspected congenital heart defect. Which finding is most characteristic of a defect that decreases pulmonary blood flow? Answer Choices: A) Bounding pulses and widened pulse pressure. B) Tachypnea with increased pulmonary vascular markings. C) Cyanosis with decreased pulmonary vascular markings. D) Hypertension with diminished lower-extremity pulses.

Option A is incorrect because bounding pulses and widened pulse pressure are associated with PDA and increased pulmonary blood flow. Option B is incorrect because increased pulmonary vascular markings and tachypnea are consistent with excessive pulmonary circulation. Option C is correct because defects that decrease blood flow from the right ventricle to the pulmonary circulation result in inadequate oxygenation, hypoxemia, and cyanosis. Decreased pulmonary vascular markings may also be present on chest x-ray. Option D is incorrect because hypertension with diminished lower-extremity pulses suggests coarctation of the aorta. Correct Answer: C

Question: A nurse observes an infant with tetralogy of Fallot (TOF) becoming increasingly cyanotic and tachypneic while crying. Which nursing action should be performed first? Answer Choices: A) Place the infant in a knee-chest position. B) Begin oral feeding to reduce energy expenditure. C) Place the infant flat with the legs extended. D) Encourage crying to increase respiratory effort.

Option A is correct because the knee-chest position increases systemic vascular resistance, reducing right-to-left shunting and helping direct more blood toward the pulmonary circulation. This can improve oxygenation during a hypercyanotic episode. Option B is incorrect because feeding increases oxygen demand and may worsen the infant's respiratory distress. Option C is incorrect because extending the legs does not provide the hemodynamic benefit of the knee-chest position. Option D is incorrect because crying increases oxygen consumption and can worsen the hypercyanotic episode. Correct Answer: A

Question: A nurse is teaching the parents of an infant with TOF about why the infant instinctively assumes a squatting or knee-chest position. Which explanation is most accurate? Answer Choices: A) It decreases systemic vascular resistance and reduces cardiac workload. B) It increases systemic vascular resistance and decreases right-to-left shunting. C) It increases pulmonary vascular resistance and reduces oxygen demand. D) It decreases venous return and prevents ventricular overload.

Option A is incorrect because decreasing systemic vascular resistance can increase right-to-left shunting and worsen cyanosis. Option B is correct because increasing systemic vascular resistance makes it more difficult for blood to enter the systemic circulation through the aorta, helping direct blood toward the pulmonary circulation and reducing right-to-left shunting. Option C is incorrect because increasing pulmonary vascular resistance would further impede pulmonary blood flow. Option D is incorrect because the primary benefit of squatting is its effect on systemic vascular resistance, not simply reducing venous return. Correct Answer: B

Question: A nurse is caring for an infant with TOF who develops a sudden hypercyanotic episode. Which additional finding should the nurse anticipate? Answer Choices: A) Increased oxygen saturation and decreased respiratory effort. B) Sudden hypoxemia, tachypnea, and irritability. C) Bounding peripheral pulses and widened pulse pressure. D) Increased urine output and improved feeding tolerance.

Option A is incorrect because a hypercyanotic episode involves worsening oxygenation and increased respiratory effort rather than improvement. Option B is correct because increased right-to-left shunting can cause an abrupt decrease in pulmonary blood flow and systemic oxygenation. The infant may develop severe cyanosis, tachypnea, irritability, and potentially loss of consciousness. Option C is incorrect because bounding pulses and widened pulse pressure are more characteristic of PDA. Option D is incorrect because decreased cardiac output and hypoxemia can compromise feeding and organ perfusion. Correct Answer: B

Question: A nurse reviews the pathophysiology of aortic stenosis with a nursing student. Which hemodynamic alteration should the student identify? Answer Choices: A) Increased blood flow from the aorta into the pulmonary artery. B) Obstruction of blood flow from the left ventricle into the aorta. C) Increased blood flow from the left atrium into the right atrium. D) Obstruction of blood flow from the right ventricle into the pulmonary artery.

Option A is incorrect because this describes PDA. Option B is correct because aortic stenosis narrows the aortic valve opening, obstructing blood ejection from the left ventricle into systemic circulation. The left ventricle must generate greater pressure to overcome the obstruction, increasing cardiac workload and potentially reducing cardiac output. Option C is incorrect because this describes the usual direction of shunting through an ASD. Option D is incorrect because this describes pulmonary outflow obstruction, which can contribute to TOF. Correct Answer: B

Question: A nurse assesses an infant with coarctation of the aorta. Which assessment finding is most concerning for this condition? Answer Choices: A) Strong femoral pulses with higher blood pressure in the legs. B) Weak femoral pulses with higher blood pressure in the arms. C) Bounding pulses in all extremities with widened pulse pressure. D) Equal blood pressure in the upper and lower extremities.

Option A is incorrect because blood flow to the lower extremities is reduced by the narrowing of the aorta. Option B is correct because coarctation obstructs systemic blood flow, typically producing higher blood pressure proximal to the narrowing in the upper extremities and weaker pulses with lower pressure distal to the narrowing in the lower extremities. Option C is incorrect because bounding pulses and widened pulse pressure are more characteristic of PDA. Option D is incorrect because a significant coarctation produces a measurable difference between upper- and lower-extremity blood pressures. Correct Answer: B

Question: A nurse is assessing a newborn with suspected coarctation of the aorta. Which finding requires the most immediate intervention? Answer Choices: A) A systolic blood pressure higher in the arms than in the legs. B) Weak femoral pulses with cool lower extremities. C) Signs of shock with poor perfusion and metabolic deterioration. D) A systolic murmur heard over the upper chest.

Option A is incorrect because an arm-to-leg blood pressure difference is an expected assessment finding in coarctation. Option B is incorrect because weak femoral pulses and cool lower extremities are important findings, but they may occur before severe systemic deterioration. Option C is correct because severe obstruction can significantly decrease systemic cardiac output and compromise perfusion to vital organs. Shock and metabolic deterioration indicate an immediately life-threatening reduction in systemic blood flow. Option D is incorrect because a murmur may be present but does not indicate the same immediate threat as shock. Correct Answer: C

Question: A nurse is caring for an infant diagnosed with hypoplastic left heart syndrome (HLHS). Which pathophysiologic process best explains the infant's condition? Answer Choices: A) Underdevelopment of the left-sided cardiac structures impairs systemic blood flow. B) Excessive pulmonary blood flow causes isolated right ventricular hypertrophy. C) An opening between the atria causes increased blood flow into the right ventricle. D) Persistent communication between the aorta and pulmonary artery increases pulmonary circulation.

Option A is correct because HLHS involves underdevelopment of the left ventricle and associated left-sided structures, preventing adequate systemic circulation through the normal left-sided pathway. Survival depends on alternative pathways that allow blood to reach the systemic circulation. Option B is incorrect because isolated right ventricular hypertrophy does not describe HLHS. Option C is incorrect because this describes an ASD and does not explain the underdeveloped left-sided structures. Option D is incorrect because this describes PDA. Correct Answer: A

Question: A nurse is caring for a newborn with HLHS who is receiving prostaglandin E1 (alprostadil). What is the primary purpose of this medication? Answer Choices: A) Promote closure of the ductus arteriosus. B) Maintain ductal patency to support systemic circulation. C) Decrease pulmonary blood flow by constricting pulmonary vessels. D) Increase myocardial contractility to improve ventricular ejection.

Option A is incorrect because closing the ductus arteriosus could eliminate a critical pathway needed to maintain systemic circulation in HLHS. Option B is correct because alprostadil maintains ductal patency, allowing blood to pass through the ductus arteriosus and support systemic perfusion when normal left-sided circulation is inadequate. Option C is incorrect because the primary purpose of alprostadil is not pulmonary vasoconstriction. Option D is incorrect because alprostadil is not primarily an inotropic medication. Correct Answer: B

Question: A nurse is caring for a newborn diagnosed with transposition of the great arteries (TGA). Which explanation best describes the resulting circulatory problem? Answer Choices: A) The pulmonary artery and aorta arise from their normal ventricles but have narrowed openings. B) The aorta arises from the right ventricle and the pulmonary artery arises from the left ventricle. C) The left ventricle is underdeveloped and cannot support systemic circulation. D) The atrial septum is absent, causing excessive pulmonary blood flow.

Option A is incorrect because this describes obstructive lesions rather than TGA. Option B is correct because TGA occurs when the aorta connects to the right ventricle and the pulmonary artery connects to the left ventricle. This creates parallel circulations rather than the normal series circulation, so oxygenated and deoxygenated blood must mix through another communication to support life. Option C is incorrect because this describes HLHS. Option D is incorrect because an absent or abnormal atrial septum does not define TGA. Correct Answer: B

Question: A nurse is caring for a newborn with TGA. The newborn has severe cyanosis shortly after birth. Which intervention is most likely to improve oxygenation by allowing blood to mix between the two circulations? Answer Choices: A) Balloon atrial septostomy. B) Aortic valve replacement. C) Pulmonary artery banding. D) Coarctation repair.

Option A is correct because balloon atrial septostomy enlarges the atrial communication, allowing oxygenated and deoxygenated blood to mix more effectively. This can improve systemic oxygenation while the infant awaits definitive surgical correction. Option B is incorrect because aortic valve replacement does not address the parallel circulations of TGA. Option C is incorrect because pulmonary artery banding reduces pulmonary blood flow and is not the intervention used to establish atrial mixing in TGA. Option D is incorrect because coarctation repair treats obstruction of the aorta. Correct Answer: A

Question: A nurse is reviewing the pathophysiology of atrioventricular (AV) canal defects. Which associated finding should the nurse anticipate? Answer Choices: A) Abnormal development of structures separating the atria and ventricles. B) Isolated narrowing of the aortic valve. C) Persistent opening between the aorta and pulmonary artery. D) Obstruction of the pulmonary valve without septal involvement.

Option A is correct because an AV canal defect involves abnormal development of the endocardial cushions, resulting in abnormalities involving the atrial septum, ventricular septum, and AV valves. This can produce significant intracardiac shunting and increased pulmonary blood flow. Option B is incorrect because isolated aortic valve narrowing describes aortic stenosis. Option C is incorrect because this describes PDA. Option D is incorrect because isolated pulmonary valve obstruction does not describe an AV canal defect. Correct Answer: A

Question: A nurse is assessing an infant with a congenital heart defect that increases pulmonary blood flow. Which combination of findings is most consistent with the expected clinical manifestations? Answer Choices: A) Cyanosis, clubbing, and decreased pulmonary vascular markings. B) Tachypnea, diaphoresis during feeding, and poor weight gain. C) Weak femoral pulses, cool legs, and upper-extremity hypertension. D) Sudden cyanosis, loss of consciousness, and knee-chest positioning.

Option A is incorrect because these findings are associated with decreased pulmonary blood flow and chronic hypoxemia. Option B is correct because increased pulmonary circulation raises cardiac workload and metabolic demands. Infants may develop tachypnea, increased respiratory effort, diaphoresis with feeding, fatigue, and poor weight gain. Option C is incorrect because this combination is characteristic of coarctation of the aorta. Option D is incorrect because these findings suggest a hypercyanotic episode associated with TOF. Correct Answer: B

Question: A nurse is assessing an infant with a congenital heart defect who has decreased pulmonary blood flow. Which finding should the nurse expect? Answer Choices: A) Pink mucous membranes and bounding pulses. B) Cyanosis and chronic hypoxemia. C) Widened pulse pressure and increased pulmonary markings. D) Hypertension in the upper extremities with bounding femoral pulses.

Option A is incorrect because bounding pulses are more consistent with PDA and increased pulmonary blood flow. Option B is correct because decreased pulmonary blood flow limits the amount of blood reaching the lungs for oxygenation, resulting in hypoxemia and cyanosis. Chronic hypoxemia may also contribute to clubbing and polycythemia. Option C is incorrect because widened pulse pressure and increased pulmonary markings suggest increased pulmonary blood flow. Option D is incorrect because coarctation causes diminished rather than bounding femoral pulses. Correct Answer: B

Question: A nurse is caring for an infant with a cyanotic congenital heart defect. Which complication is associated with chronic hypoxemia? Answer Choices: A) Decreased red blood cell production. B) Polycythemia and increased thromboembolic risk. C) Reduced blood viscosity and increased bleeding risk. D) Increased platelet function and reduced clotting risk.

Option A is incorrect because chronic hypoxemia stimulates the bone marrow to increase red blood cell production. Option B is correct because the body compensates for low oxygen levels by producing more RBCs to increase oxygen-carrying capacity. This can cause polycythemia, increased blood viscosity, and an increased risk of thrombosis and thromboembolic complications. Option C is incorrect because increased RBC concentration raises rather than reduces blood viscosity. Option D is incorrect because chronic hypoxemia can impair platelet survival and clotting factors, increasing both thrombotic and bleeding concerns. Correct Answer: B

Question: A nurse is assessing a child with an unrepaired cyanotic congenital heart defect. The child suddenly develops increased cyanosis, tachypnea, irritability, and decreased level of consciousness. Which complication should the nurse suspect? Answer Choices: A) Hypercyanotic episode. B) Uncomplicated heart murmur. C) Mild pulmonary overcirculation. D) Isolated fluid volume excess.

Option A is correct because a hypercyanotic episode involves a sudden increase in right-to-left shunting and a significant decrease in oxygenation. Severe episodes can progress to altered consciousness and require immediate intervention. Option B is incorrect because an uncomplicated murmur does not explain sudden deterioration in oxygenation and neurological status. Option C is incorrect because pulmonary overcirculation produces a different pattern of findings, including tachypnea and signs of heart failure. Option D is incorrect because fluid volume excess may contribute to respiratory symptoms but does not adequately explain the abrupt cyanotic episode. Correct Answer: A

Question: A nurse is assessing a newborn with a congenital heart defect. Which finding may be the earliest or only indication of a minor defect? Answer Choices: A) Severe cyanosis. B) A heart murmur. C) Loss of consciousness. D) Marked peripheral edema.

Option A is incorrect because severe cyanosis suggests a significant defect affecting oxygenation. Option B is correct because a heart murmur may be the only clinical manifestation of a minor defect, such as a small ASD. A murmur reflects abnormal pressure or blood flow through the heart. Option C is incorrect because loss of consciousness suggests severe compromise rather than a minor defect. Option D is incorrect because marked edema may indicate significant cardiac dysfunction. Correct Answer: B

Question: A nurse assesses an infant with a congenital heart defect and observes tachypnea, nasal flaring, grunting, and diaphoresis. Which interpretation is most appropriate? Answer Choices: A) The infant is compensating for increased respiratory and metabolic demands. B) The infant is demonstrating normal feeding-related respiratory changes. C) The infant is experiencing isolated systemic hypertension. D) The infant is showing evidence of improved pulmonary perfusion.

Option A is correct because increased pulmonary blood flow and cardiac workload can cause respiratory distress and increased metabolic demands. Tachypnea, nasal flaring, grunting, and diaphoresis are concerning manifestations of cardiopulmonary compromise. Option B is incorrect because these findings are not normal responses to feeding and indicate increased respiratory effort. Option C is incorrect because systemic hypertension alone does not explain this combination of respiratory findings. Option D is incorrect because increased respiratory effort is not evidence of improved perfusion. Correct Answer: A

Question: A nurse is assessing an infant with congenital heart disease who has become increasingly fatigued during feedings. Which intervention is most appropriate? Answer Choices: A) Offer larger feedings less frequently. B) Provide frequent small feedings with rest periods. C) Increase feeding duration to improve caloric intake. D) Withhold all oral feedings until the infant gains weight.

Option A is incorrect because larger feedings increase energy expenditure and may worsen fatigue. Option B is correct because infants with congenital heart disease often use significant energy during feeding. Small, frequent feedings with rest periods decrease fatigue and support adequate nutritional intake. High-calorie formula or supplemental nasogastric/gastrostomy feeding may be necessary when oral intake is inadequate. Option C is incorrect because prolonged feeding increases energy expenditure and may worsen feeding intolerance. Option D is incorrect because oral feeding should not automatically be withheld; nutritional support should be individualized according to the infant's condition. Correct Answer: B

Question: A nurse is caring for an infant with congenital heart disease who has poor weight gain despite frequent feeding attempts. Which intervention should the nurse anticipate? Answer Choices: A) Transition to high-calorie formula or supplemental enteral feeding. B) Restrict all calories to decrease cardiac workload. C) Increase the volume of each feeding and eliminate rest periods. D) Discontinue nutritional supplementation once tachypnea develops.

Option A is correct because infants with congenital heart disease may have increased energy requirements and difficulty consuming enough calories. High-calorie formula and supplemental enteral feeding can help meet nutritional needs while reducing the energy required for feeding. Option B is incorrect because calorie restriction worsens nutritional deficits and growth failure. Option C is incorrect because larger feedings can increase fatigue and respiratory distress. Option D is incorrect because inadequate nutrition should be addressed rather than automatically discontinued when tachypnea occurs. Correct Answer: A

Question: A nurse is assessing an infant with congenital heart disease. The infant has gained 400 g over 2 days, has periorbital edema, and has crackles throughout the lungs. Which complication should the nurse suspect? Answer Choices: A) Dehydration. B) Fluid volume excess associated with heart failure. C) Isolated nutritional deficiency. D) Decreased systemic vascular resistance without cardiac dysfunction.

Option A is incorrect because dehydration is associated with fluid loss, decreased weight, and possible poor perfusion rather than rapid weight gain and edema. Option B is correct because rapid weight gain, edema, and pulmonary crackles suggest fluid accumulation associated with cardiac dysfunction and heart failure. Increased pulmonary blood flow can contribute to increased cardiac workload and fluid congestion. Option C is incorrect because nutritional deficiency does not explain the rapid weight gain and pulmonary congestion. Option D is incorrect because the findings indicate fluid overload rather than an isolated vascular resistance alteration. Correct Answer: B

Question: A nurse is developing a plan of care for an infant with a significant VSD and signs of heart failure. Which assessment is most important for evaluating fluid status over time? Answer Choices: A) Daily weight using the same scale. B) Weekly measurement of head circumference. C) Assessment of pupil response. D) Measurement of abdominal circumference once per month.

Option A is correct because daily weight is a sensitive indicator of fluid changes. Consistent weighing using the same scale and similar conditions helps identify fluid retention or loss. Option B is incorrect because head circumference evaluates growth and neurological development rather than short-term fluid status. Option C is incorrect because pupil response does not assess fluid balance. Option D is incorrect because monthly abdominal circumference measurements are not sufficiently frequent to monitor acute fluid changes. Correct Answer: A

Question: A nurse is caring for an infant with congenital heart disease who has pulmonary congestion and peripheral edema. Which prescription should the nurse anticipate? Answer Choices: A) Diuretic therapy. B) Increased sodium intake. C) Routine fluid boluses. D) Discontinuation of all cardiac medications.

Option A is correct because diuretics help remove excess fluid, reducing pulmonary congestion and peripheral edema. Fluid management is an important component of care for infants with heart failure associated with congenital heart defects. Option B is incorrect because increased sodium intake can worsen fluid retention. Option C is incorrect because routine fluid boluses may worsen fluid overload unless specifically indicated for a separate condition. Option D is incorrect because medications should be managed according to the prescribed treatment plan rather than discontinued indiscriminately. Correct Answer: A

Question: A nurse is administering digoxin to an infant with congenital heart disease. Which assessment is most important immediately before administration? Answer Choices: A) Apical heart rate. B) Abdominal circumference. C) Peripheral temperature. D) Respiratory depth only.

Option A is correct because digoxin can decrease heart rate and cause bradycardia. The nurse should assess the apical pulse before administration and follow the prescribed age-specific parameters for withholding the medication. Option B is incorrect because abdominal circumference may help evaluate fluid accumulation but does not determine whether digoxin should be administered. Option C is incorrect because peripheral temperature does not directly evaluate the safety of administering digoxin. Option D is incorrect because respiratory assessment is important in congenital heart disease but does not replace the required cardiac assessment before digoxin administration. Correct Answer: A

Question: A nurse is caring for an infant receiving digoxin and diuretics for heart failure associated with a congenital heart defect. Which laboratory value is particularly important to monitor because it can increase the risk of digoxin toxicity? Answer Choices: A) Serum potassium. B) Serum chloride only. C) Hemoglobin A1c. D) Serum calcium only.

Option A is correct because hypokalemia increases myocardial sensitivity to digoxin and increases the risk of toxicity. Diuretic therapy can contribute to potassium loss, making electrolyte monitoring especially important. Option B is incorrect because chloride may be monitored during diuretic therapy but is not the key electrolyte associated with increased digoxin toxicity risk. Option C is incorrect because hemoglobin A1c evaluates longer-term glucose control and does not assess digoxin toxicity risk. Option D is incorrect because calcium abnormalities can affect cardiac function, but potassium is particularly important in this medication combination. Correct Answer: A

Question: A nurse is preparing an infant with a congenital heart defect for cardiac catheterization. Which nursing action is most appropriate before the procedure? Answer Choices: A) Assess medication history, including anticoagulants and antiplatelet agents. B) Encourage unrestricted oral intake immediately before the procedure. C) Discontinue all prescribed medications without consulting the provider. D) Avoid obtaining baseline vital signs.

Option A is correct because cardiac catheterization is an invasive procedure, and medications affecting bleeding risk must be reviewed. The nurse should assess medication history, verify relevant laboratory results, and ensure that required preprocedural preparation is completed. Option B is incorrect because fasting requirements must be followed according to the procedural orders. Option C is incorrect because medications should not be discontinued without appropriate provider direction. Option D is incorrect because baseline vital signs provide a comparison for identifying complications during and after the procedure. Correct Answer: A

Question: A nurse is caring for an infant who has returned from cardiac catheterization through the femoral artery. Which assessment finding requires immediate intervention? Answer Choices: A) Mild discomfort at the insertion site. B) A small amount of bruising at the insertion site. C) An absent distal pulse in the affected extremity. D) The need to remain on bed rest.

Option A is incorrect because mild discomfort can occur after catheterization and should be assessed and managed. Option B is incorrect because minor bruising may occur, although the site should be monitored for progression. Option C is correct because an absent distal pulse may indicate impaired arterial perfusion or vascular obstruction. The nurse must assess the extremity immediately and notify the appropriate provider. Option D is incorrect because maintaining the prescribed position and bed rest is an expected postprocedural intervention. Correct Answer: C

Question: A nurse is monitoring an infant after cardiac catheterization. Which finding most strongly suggests bleeding at the insertion site? Answer Choices: A) Increasing swelling and expanding hematoma. B) Warmth of the unaffected extremity. C) Stable vital signs and unchanged pulses. D) Mild tenderness that improves with rest.

Option A is correct because an expanding hematoma may indicate active bleeding from the arterial access site. The nurse should assess the site, monitor vital signs and perfusion, and promptly report concerning changes. Option B is incorrect because warmth of the unaffected extremity does not indicate bleeding at the insertion site. Option C is incorrect because stable findings are reassuring rather than evidence of active bleeding. Option D is incorrect because improving mild tenderness is not the typical indication of expanding hemorrhage. Correct Answer: A

Question: A nurse is teaching the parents of a child scheduled for echocardiography. Which explanation is most appropriate? Answer Choices: A) The test uses sound waves to evaluate cardiac structure and function. B) The test uses an invasive catheter to measure intracardiac pressure. C) The test records the electrical conduction of the heart. D) The test requires exposure to ionizing radiation to visualize the heart.

Option A is correct because echocardiography is a noninvasive ultrasound examination that evaluates cardiac anatomy, blood flow, and function. It can help identify structural defects and assess their progression. Option B is incorrect because invasive pressure measurements are associated with cardiac catheterization. Option C is incorrect because electrocardiography records the heart's electrical activity. Option D is incorrect because echocardiography does not use ionizing radiation. Correct Answer: A

Question: A nurse is preparing a child for electrocardiography (ECG). Which information should the nurse provide to the parents? Answer Choices: A) The test records electrical activity and can identify rhythm abnormalities. B) The test directly measures oxygen saturation in the pulmonary artery. C) The test visualizes the heart's anatomical chambers using ultrasound. D) The test measures the amount of blood flowing through the aorta using a catheter.

Option A is correct because an ECG records the heart's electrical activity, including rate, rhythm, and conduction patterns. It can help identify dysrhythmias associated with congenital heart disease. Option B is incorrect because pulmonary artery oxygen saturation may be evaluated through invasive hemodynamic assessment, not a standard ECG. Option C is incorrect because echocardiography evaluates cardiac anatomy using ultrasound. Option D is incorrect because this describes invasive hemodynamic assessment during cardiac catheterization. Correct Answer: A

Question: A nurse is preparing an infant for a chest x-ray to evaluate congenital heart disease. Which finding can this diagnostic test help identify? Answer Choices: A) Cardiac size and pulmonary vascular markings. B) Exact intracardiac electrical conduction pathways. C) Serum electrolyte concentrations. D) Direct measurement of ventricular pressure.

Option A is correct because a chest x-ray evaluates the size and contour of the heart, lung fields, and pulmonary vascular markings. These findings can help identify cardiomegaly and changes associated with increased or decreased pulmonary blood flow. Option B is incorrect because electrical conduction is assessed with an ECG. Option C is incorrect because electrolyte concentrations require laboratory testing. Option D is incorrect because direct pressure measurement requires invasive hemodynamic assessment. Correct Answer: A

Question: A nurse is caring for a child undergoing exercise testing to evaluate a congenital heart condition. Which finding during the test most strongly suggests inadequate cardiac compensation? Answer Choices: A) Increasing heart rate with appropriate activity tolerance. B) Dizziness, chest pain, and excessive fatigue. C) Mild increase in respiratory rate that resolves with rest. D) Stable oxygen saturation and expected exercise response.

Option A is incorrect because an appropriate increase in heart rate is an expected physiological response to exercise. Option B is correct because dizziness, chest pain, excessive fatigue, and other concerning symptoms may indicate inadequate cardiac output or impaired cardiac compensation during activity. The test should be stopped when clinically significant symptoms develop. Option C is incorrect because a mild increase in respiratory rate can be expected during activity and is not necessarily evidence of inadequate cardiac output. Option D is incorrect because stable oxygenation and an expected response are reassuring findings. Correct Answer: B

Question: A nurse is teaching the parents of a child scheduled for Holter monitoring. Which instruction is most appropriate? Answer Choices: A) Maintain usual daily activities and record activities and symptoms. B) Remain on strict bed rest for the entire monitoring period. C) Remove the monitor during periods of physical activity. D) Avoid documenting symptoms unless the child loses consciousness.

Option A is correct because Holter monitoring records cardiac electrical activity over an extended period, commonly 24 hours. Maintaining usual activities helps capture typical rhythm patterns, while a diary helps correlate symptoms and activities with ECG findings. Option B is incorrect because routine daily activity is generally maintained. Option C is incorrect because removing the monitor during activity may prevent recording important rhythm changes. Option D is incorrect because all relevant symptoms should be documented, including dizziness, palpitations, and fatigue. Correct Answer: A

Question: A nurse is caring for a child undergoing hyperoxia testing for suspected cyanotic congenital heart disease. Which explanation best describes the purpose of the test? Answer Choices: A) Determine whether oxygen administration significantly improves oxygenation. B) Measure the degree of myocardial electrical conduction. C) Identify the exact location of a septal opening. D) Determine whether the ductus arteriosus is anatomically closed.

Option A is correct because the hyperoxia test evaluates the response to 100% oxygen. The PDF identifies it as a sensitive tool for differentiating primary pulmonary and cyanotic congenital heart disease. Limited improvement in oxygenation may suggest an intracardiac right-to-left shunt. Option B is incorrect because electrical conduction is evaluated using ECG. Option C is incorrect because echocardiography and cardiac imaging can identify septal defects. Option D is incorrect because the test does not directly determine ductal anatomy. Correct Answer: A

Question: A nurse is caring for a newborn with suspected congenital heart disease who is scheduled for cardiac MRI. Which nursing action is most important before the procedure? Answer Choices: A) Verify the absence of contraindicated metal implants. B) Encourage the infant to consume a large feeding immediately before the scan. C) Remove the need for monitoring during sedation. D) Explain that the procedure uses ionizing radiation.

Option A is correct because MRI uses powerful magnetic fields, making screening for metal implants and other contraindications essential. The nurse should also prepare the family for the machine's noise and enclosed environment and monitor the infant as appropriate. Option B is incorrect because feeding and fasting requirements depend on the planned sedation and procedural orders. Option C is incorrect because sedation may require appropriate physiological monitoring. Option D is incorrect because MRI uses magnetic fields and radio waves rather than ionizing radiation. Correct Answer: A

Question: A nurse reviews the prenatal history of an infant diagnosed with a congenital heart defect. Which maternal condition is associated with increased risk of congenital heart abnormalities? Answer Choices: A) Maternal diabetes mellitus. B) Maternal seasonal allergies. C) Occasional uncomplicated headaches. D) Mild iron deficiency without other complications.

Option A is correct because maternal metabolic disorders, including diabetes mellitus and phenylketonuria, are identified as risk factors for congenital heart defects. Maternal hyperglycemia can interfere with normal fetal cardiac development, particularly during early gestation. Option B is incorrect because seasonal allergies are not identified as a major congenital heart defect risk factor in the provided material. Option C is incorrect because occasional uncomplicated headaches are not an identified risk factor. Option D is incorrect because isolated mild iron deficiency is not listed among the major etiologic risk factors in the PDF. Correct Answer: A

Question: A nurse is discussing congenital heart defect prevention with a woman planning pregnancy. Which recommendation is most appropriate? Answer Choices: A) Avoid alcohol and tobacco and take a daily multivitamin containing 400 mcg of folic acid. B) Begin taking prescribed medications without reviewing pregnancy risks. C) Avoid all vaccinations during the preconception period. D) Delay management of chronic diseases until after delivery.

Option A is correct because the PDF identifies avoidance of alcohol and cigarettes, management of chronic medical conditions, vaccination against rubella when appropriate, and daily folic acid supplementation as important preventive strategies. Preconception counseling allows risks to be identified and managed before pregnancy. Option B is incorrect because medications should be reviewed with a healthcare provider due to potential fetal risks. Option C is incorrect because vaccination against rubella before pregnancy is an important preventive strategy for women who are not immune. Option D is incorrect because chronic conditions should be optimized before conception whenever possible. Correct Answer: A

Question: A nurse reviews the medication history of a pregnant client whose fetus has a suspected congenital heart defect. Which medication exposure is specifically identified as a potential risk factor in the provided material? Answer Choices: A) Warfarin. B) Acetaminophen. C) Prenatal folic acid. D) Normal-dose calcium supplementation.

Option A is correct because warfarin is among the medications identified as potential fetal exposure risk factors. Other examples include lithium, phenytoin, and valproic acid. Option B is incorrect because acetaminophen is not listed among the specific medication exposures in the PDF's etiologic discussion. Option C is incorrect because folic acid supplementation is recommended as a preventive health measure. Option D is incorrect because normal calcium supplementation is not identified as a specific congenital heart defect risk factor in the provided material. Correct Answer: A

Question: A nurse is discussing genetic counseling with parents who have a child with a congenital heart defect. Which statement best explains the purpose of genetic counseling? Answer Choices: A) Determine whether the defect will resolve without treatment. B) Explain the potential hereditary risk and likelihood of recurrence in future pregnancies. C) Guarantee that future children will not develop congenital heart disease. D) Replace the need for prenatal diagnostic testing.

Option A is incorrect because genetic counseling does not determine whether an existing defect will resolve. Option B is correct because genetic counseling helps families understand inherited risk, genetic conditions, and the possibility of passing a congenital heart defect to future children. The PDF notes that recurrence risk can be substantial in some inherited conditions. Option C is incorrect because genetic counseling cannot guarantee that a future child will be unaffected. Option D is incorrect because genetic counseling does not replace appropriate prenatal screening or diagnostic testing. Correct Answer: B

Question: A nurse is teaching the parents of a newborn with a congenital heart defect about the importance of preventing respiratory infections. Which explanation is most accurate? Answer Choices: A) Respiratory infections can increase hypoxemia and metabolic oxygen demand. B) Respiratory infections permanently close abnormal cardiac openings. C) Respiratory infections decrease the infant's cardiac workload. D) Respiratory infections prevent the development of heart failure.

Option A is correct because respiratory infections can worsen hypoxemia, increase respiratory effort, and raise metabolic oxygen requirements. Infants with cyanotic congenital heart defects may have limited ability to compensate for these additional demands. Option B is incorrect because respiratory infections do not anatomically close congenital cardiac defects. Option C is incorrect because infection generally increases rather than decreases cardiopulmonary workload. Option D is incorrect because respiratory infections can worsen cardiac compromise rather than prevent heart failure. Correct Answer: A

Question: A nurse is providing discharge teaching to the parents of an infant with congenital heart disease. Which instruction is most important regarding immunizations? Answer Choices: A) Follow the recommended immunization schedule and discuss seasonal respiratory virus prevention. B) Delay all immunizations until after corrective cardiac surgery. C) Avoid routine health maintenance visits during respiratory virus season. D) Administer additional vaccine doses without consulting the healthcare provider.

Option A is correct because routine immunizations and preventive healthcare reduce the risk of infections that may worsen hypoxemia and increase cardiac workload. The PDF emphasizes routine health maintenance and seasonal respiratory virus prevention. Option B is incorrect because routine immunizations should not automatically be delayed until after surgery. Option C is incorrect because preventive visits remain important. Option D is incorrect because vaccination should follow recommended schedules and provider guidance. Correct Answer: A

Question: A nurse is evaluating an infant with a congenital heart defect who has delayed capillary refill, cool extremities, weak pulses, and decreased urine output. Which physiological problem should the nurse suspect? Answer Choices: A) Increased systemic cardiac output. B) Decreased cardiac output and impaired systemic perfusion. C) Increased pulmonary blood flow without systemic effects. D) Improved oxygen delivery to peripheral tissues.

Option A is incorrect because increased cardiac output would generally support rather than impair peripheral perfusion. Option B is correct because weak pulses, cool extremities, delayed capillary refill, and decreased urine output indicate inadequate systemic blood flow. Reduced cardiac output can compromise renal, peripheral, and other organ perfusion. Option C is incorrect because the combination of findings indicates systemic perfusion compromise, not simply increased pulmonary circulation. Option D is incorrect because these findings are signs of inadequate rather than improved tissue oxygen delivery. Correct Answer: B

Question: A nurse is assessing a child with a congenital heart defect that obstructs systemic blood flow. Which additional finding should the nurse expect? Answer Choices: A) Strong pulses with delayed capillary refill in the lower extremities. B) Weak pulses, cool extremities, and decreased urine output. C) Increased pulmonary vascular markings and bounding pulses. D) Cyanosis that improves with feeding.

Option A is incorrect because strong lower-extremity pulses are not expected distal to significant systemic obstruction. Option B is correct because obstruction of systemic blood flow reduces cardiac output and tissue perfusion. Weak pulses, cool extremities, delayed capillary refill, and decreased urine output may develop. Option C is incorrect because bounding pulses and increased pulmonary vascular markings are associated with increased pulmonary blood flow. Option D is incorrect because feeding does not correct systemic outflow obstruction or hypoxemia. Correct Answer: B

Question: A nurse is caring for an infant with congenital heart disease who is increasingly lethargic, has poor feeding tolerance, and demonstrates a decreasing urine output. Which nursing action is the priority? Answer Choices: A) Reassess perfusion and cardiovascular status and promptly notify the healthcare provider. B) Encourage a longer feeding to improve caloric intake. C) Delay assessment until the next scheduled vital signs. D) Provide unrestricted oral fluids.

Option A is correct because lethargy, feeding intolerance, and decreased urine output may indicate worsening cardiac output and impaired systemic perfusion. The nurse must promptly reassess vital signs, pulses, capillary refill, respiratory status, and urine output and escalate care. Option B is incorrect because prolonged feeding increases oxygen demand and may worsen fatigue. Option C is incorrect because waiting could delay treatment of potentially serious deterioration. Option D is incorrect because fluid administration must be individualized and unrestricted fluids may worsen heart failure. Correct Answer: A

Question: A nurse is performing a cardiovascular assessment on an infant with suspected congenital heart disease. Which assessment technique is most appropriate for evaluating differences in systemic perfusion? Answer Choices: A) Compare upper- and lower-extremity blood pressures and peripheral pulses. B) Assess only the radial pulse in the right arm. C) Compare respiratory rates before and after feeding. D) Assess only the apical heart rate.

Option A is correct because comparing blood pressures and pulses in the upper and lower extremities helps identify differences in systemic blood flow, particularly with coarctation of the aorta. The PDF emphasizes comparing upper- and lower-extremity blood pressures and evaluating brachial and femoral pulse strength. Option B is incorrect because assessment of only one radial pulse cannot identify an arm-to-leg discrepancy. Option C is incorrect because respiratory rate is important but does not directly evaluate differences in systemic perfusion. Option D is incorrect because apical heart rate does not identify regional blood flow obstruction. Correct Answer: A

Question: A nurse is assessing an infant with a congenital heart defect. Which finding should be included when evaluating for heart failure? Answer Choices: A) Hepatomegaly, edema, and crackles. B) Increased appetite and normal respiratory effort. C) Strong femoral pulses and warm extremities. D) Decreased respiratory rate with improved feeding tolerance.

Option A is correct because fluid accumulation can cause hepatomegaly, peripheral or periorbital edema, and pulmonary crackles. These findings may indicate worsening heart failure and impaired cardiac function. Option B is incorrect because normal respiratory effort and increased appetite are not characteristic findings of decompensated heart failure. Option C is incorrect because strong femoral pulses and warm extremities are reassuring findings of peripheral perfusion, although they do not independently exclude heart failure. Option D is incorrect because improved feeding tolerance and normal respiratory function suggest clinical improvement rather than deterioration. Correct Answer: A

Question: A nurse is caring for an infant with a congenital heart defect and observes clubbing of the fingers and toes. Which explanation best describes this finding? Answer Choices: A) Chronic inadequate oxygenation associated with cyanotic heart disease. B) Acute fluid volume excess associated with left-sided heart failure. C) Increased systemic perfusion caused by PDA. D) Temporary vasoconstriction caused by crying.

Option A is correct because chronic hypoxemia associated with cyanotic congenital heart defects can produce clubbing of the fingers and toes. This reflects prolonged inadequate oxygenation rather than a brief episode of respiratory distress. Option B is incorrect because fluid volume excess does not directly explain digital clubbing. Option C is incorrect because increased pulmonary blood flow from PDA is not the classic cause of chronic cyanotic clubbing. Option D is incorrect because temporary vasoconstriction may alter skin color but does not cause chronic clubbing. Correct Answer: A

Question: A nurse is assessing a child with congenital heart disease who has a holosystolic murmur. Which interpretation is most appropriate? Answer Choices: A) The murmur may reflect blood moving through an abnormal opening between cardiac chambers. B) The murmur confirms that the aortic valve is completely closed. C) The murmur indicates that the ductus arteriosus has closed normally. D) The murmur rules out a significant congenital heart defect.

Option A is correct because a holosystolic murmur may occur with septal defects, including VSD, due to abnormal blood flow between cardiac chambers during systole. The location and intensity of the murmur can provide information about the underlying defect. Option B is incorrect because a murmur does not establish complete aortic valve closure. Option C is incorrect because a murmur does not confirm normal ductal closure. Option D is incorrect because a murmur may be an important indicator of a congenital structural abnormality. Correct Answer: A

Question: A nurse is caring for an infant with a suspected congenital heart defect. Which assessment finding should be reported because it may indicate worsening hypoxemia? Answer Choices: A) New cyanosis involving the lips and oral mucosa. B) A stable heart murmur without other symptoms. C) Warm extremities with brisk capillary refill. D) Improved feeding tolerance and increased activity.

Option A is correct because central cyanosis involving the oral mucosa and lips suggests inadequate arterial oxygenation and requires prompt evaluation. Option B is incorrect because a stable murmur without clinical deterioration is less concerning than new central cyanosis. Option C is incorrect because warm extremities and brisk capillary refill generally indicate adequate peripheral perfusion. Option D is incorrect because improved feeding tolerance and activity are signs of clinical improvement. Correct Answer: A

Question: A nurse is teaching parents about the timing of congenital heart defect surgery. Which statement best reflects the treatment approach described in the provided material? Answer Choices: A) All congenital heart defects require immediate open-heart surgery. B) Treatment depends on the defect, symptom severity, and whether the condition is immediately life-threatening. C) Surgery is avoided in infants because the heart cannot tolerate corrective procedures. D) Medication permanently corrects every congenital structural abnormality.

Option A is incorrect because not all defects require immediate surgery; some may be monitored or treated with catheter-based procedures. Option B is correct because treatment depends on the specific structural abnormality, clinical severity, and hemodynamic consequences. Some infants require immediate intervention, while others undergo corrective procedures later. Option C is incorrect because many congenital defects can be surgically corrected during infancy. Option D is incorrect because medications can manage symptoms and support circulation but do not permanently correct most structural defects. Correct Answer: B

Question: A nurse is caring for an infant with a PDA who is scheduled for transcatheter closure. Which explanation should the nurse provide to the parents? Answer Choices: A) A catheter-based device will be used to close the abnormal connection. B) The procedure will create a larger communication between the atria. C) The procedure will replace the aortic valve. D) The procedure will connect the superior vena cava directly to the pulmonary artery.

Option A is correct because transcatheter PDA closure involves inserting a catheter and advancing a closure device to occlude the persistent ductus arteriosus. This reduces abnormal blood flow from the aorta into the pulmonary artery. Option B is incorrect because enlarging an atrial communication is associated with balloon atrial septostomy. Option C is incorrect because aortic valve replacement is not the treatment for PDA. Option D is incorrect because connecting the superior vena cava to the pulmonary artery describes the Glenn procedure. Correct Answer: A

Question: A nurse is reviewing treatment options for a child with a significant ASD. Which catheter-based procedure may be used to close the defect? Answer Choices: A) Transcatheter closure using an umbrella or clamshell-shaped device. B) Balloon atrial septostomy to enlarge the opening. C) Patent ductus arteriosus closure. D) Pulmonary artery banding.

Option A is correct because transcatheter ASD closure can involve placement of an umbrella- or clamshell-shaped device to occlude the septal opening. Option B is incorrect because balloon atrial septostomy enlarges an atrial communication, which is useful in conditions such as TGA when mixing is inadequate. Option C is incorrect because PDA closure treats a persistent connection between the aorta and pulmonary artery. Option D is incorrect because pulmonary artery banding reduces pulmonary blood flow and is not the standard catheter-based ASD closure procedure. Correct Answer: A

Question: A nurse is caring for a child with pulmonary overcirculation and a large VSD. Which procedure may be used as a palliative intervention to decrease pulmonary blood flow? Answer Choices: A) Pulmonary artery banding. B) Balloon atrial septostomy. C) Patent ductus arteriosus closure. D) Ross procedure.

Option A is correct because pulmonary artery banding narrows the pulmonary artery, decreasing pulmonary blood flow and pulmonary vascular pressure. It may be used as a palliative intervention in selected complex defects. Option B is incorrect because balloon atrial septostomy increases mixing between the atria rather than reducing pulmonary overcirculation. Option C is incorrect because PDA closure treats a persistent ductus arteriosus. Option D is incorrect because the Ross procedure involves replacing a diseased aortic valve with the patient's pulmonary valve and is used for aortic stenosis. Correct Answer: A

Question: A nurse is caring for an infant with TOF who requires staged surgical management. Which procedure creates a connection between the subclavian artery and pulmonary artery to increase pulmonary blood flow? Answer Choices: A) Blalock-Taussig shunt. B) Fontan procedure. C) Glenn procedure. D) Norwood procedure.

Option A is correct because the Blalock-Taussig shunt creates a systemic-to-pulmonary artery connection to increase pulmonary blood flow in selected infants with TOF and other defects. Option B is incorrect because the Fontan procedure directs systemic venous blood to the pulmonary arteries without passing through a ventricle. Option C is incorrect because the Glenn procedure connects the superior vena cava to the pulmonary artery. Option D is incorrect because the Norwood procedure reconstructs systemic outflow and creates a pathway for pulmonary blood flow in HLHS. Correct Answer: A

Question: A nurse is reviewing the Glenn procedure with the parents of an infant with complex congenital heart disease. Which explanation is most accurate? Answer Choices: A) The superior vena cava is connected to the pulmonary artery. B) The aorta is connected directly to the pulmonary artery. C) The left ventricle is connected to the right atrium. D) The pulmonary valve is replaced with the aortic valve.

Option A is correct because the Glenn procedure connects the superior vena cava to the right pulmonary artery, allowing venous blood from the upper body to flow directly to the pulmonary circulation. It is used in selected complex congenital heart defects, including HLHS. Option B is incorrect because this does not describe the Glenn procedure. Option C is incorrect because this is not a standard corrective or palliative procedure described in the PDF. Option D is incorrect because valve replacement is not the purpose of the Glenn procedure. Correct Answer: A

Question: A nurse is reviewing the Fontan procedure with a nursing student. Which explanation best describes the purpose of this operation? Answer Choices: A) Direct systemic venous blood to the lungs without passing through a ventricle. B) Create a permanent opening between the aorta and pulmonary artery. C) Increase right-to-left shunting through a ventricular septal defect. D) Replace the aortic valve with a pulmonary valve.

Option A is correct because the Fontan procedure redirects systemic venous blood to the pulmonary circulation without requiring it to pass through a ventricle. It is used in selected complex congenital defects involving single-ventricle physiology. Option B is incorrect because this describes a persistent ductal connection rather than Fontan circulation. Option C is incorrect because the Fontan procedure is intended to establish an alternative circulation, not increase right-to-left shunting. Option D is incorrect because this describes the general concept of the Ross procedure. Correct Answer: A

Question: A nurse is caring for an infant with HLHS who is scheduled for a Norwood procedure. Which description best explains the purpose of this procedure? Answer Choices: A) Reconstruct systemic blood flow and establish an alternative pathway for pulmonary circulation. B) Close the atrial septal defect using a catheter-based device. C) Replace the aortic valve with the pulmonary valve. D) Narrow the pulmonary artery to decrease excessive pulmonary blood flow.

Option A is correct because the Norwood procedure is a staged surgical approach for HLHS that reconstructs the systemic outflow pathway and establishes a pathway for pulmonary blood flow. Option B is incorrect because this describes transcatheter ASD closure. Option C is incorrect because this describes the Ross procedure. Option D is incorrect because pulmonary artery banding reduces pulmonary blood flow and is not the purpose of the Norwood procedure. Correct Answer: A

Question: A nurse is caring for a child with TGA who is scheduled for an arterial switch procedure. Which intervention best describes the purpose of this surgery? Answer Choices: A) Reconnect the great arteries to their appropriate ventricles. B) Connect the superior vena cava to the pulmonary artery. C) Create a permanent connection between the aorta and pulmonary artery. D) Narrow the descending aorta using a synthetic patch.

Option A is correct because the arterial switch procedure restores the normal relationship of the great arteries by connecting the aorta to the left ventricle and the pulmonary artery to the right ventricle. This corrects the parallel circulations associated with TGA. Option B is incorrect because this describes the Glenn procedure. Option C is incorrect because this would create a PDA-like communication rather than correct TGA. Option D is incorrect because this is unrelated to the arterial switch procedure. Correct Answer: A

Question: A nurse is providing postoperative care to an infant following congenital heart surgery. Which assessment is the priority? Answer Choices: A) Respiratory effort, oxygen saturation, and breath sounds. B) Appetite and preferred feeding schedule only. C) Developmental milestones and social interaction. D) Bowel sounds and stool frequency only.

Option A is correct because respiratory compromise and impaired oxygenation can occur after cardiac surgery. The nurse should assess respiratory effort, oxygen saturation, breath sounds, and signs of pulmonary complications. Option B is incorrect because nutrition is important but does not take priority over airway and breathing assessment immediately after surgery. Option C is incorrect because developmental assessment is not the immediate postoperative priority. Option D is incorrect because gastrointestinal assessment is important but does not supersede respiratory assessment. Correct Answer: A

Question: A nurse is caring for an infant following cardiac surgery. The infant develops a new irregular heart rhythm, weak pulses, and cool extremities. Which action should the nurse take first? Answer Choices: A) Notify the healthcare provider and initiate immediate cardiovascular assessment and monitoring. B) Encourage oral feeding to increase energy. C) Document the findings and reassess in 4 hours. D) Place the infant in a warm bath to improve peripheral circulation.

Option A is correct because postoperative dysrhythmias can compromise cardiac output. The combination of an irregular rhythm, weak pulses, and cool extremities suggests impaired perfusion and requires immediate evaluation and intervention. Option B is incorrect because feeding increases metabolic demand and is inappropriate during possible cardiovascular instability. Option C is incorrect because delaying reassessment could allow a serious complication to progress. Option D is incorrect because warming measures do not treat a potentially dangerous dysrhythmia or reduced cardiac output. Correct Answer: A

Question: A nurse is caring for an infant after congenital heart surgery. Which finding is most concerning for postoperative infection? Answer Choices: A) Fever, spreading erythema, and increasing incisional drainage. B) Mild incisional tenderness that improves daily. C) A clean, dry incision with intact edges. D) Gradual improvement in activity and feeding tolerance.

Option A is correct because fever, spreading erythema, increasing pain, and excessive drainage may indicate infection. The nurse should assess the incision and report concerning changes. Option B is incorrect because mild and improving tenderness can be expected during healing. Option C is incorrect because a clean, dry, intact incision indicates appropriate healing. Option D is incorrect because improving activity and feeding tolerance are reassuring signs of recovery. Correct Answer: A

Question: A nurse is planning discharge teaching for the parents of an infant who has undergone congenital heart surgery. Which instruction is most important regarding infective endocarditis? Answer Choices: A) Discuss the need for prophylactic antibiotics before certain invasive dental procedures when indicated. B) Administer antibiotics daily for life regardless of the child's condition. C) Avoid all routine dental care. D) Discontinue all cardiac follow-up once the incision heals.

Option A is correct because children with certain congenital heart conditions may require antibiotic prophylaxis before specific invasive procedures, particularly during the period identified in the treatment plan. The PDF emphasizes discussing infective endocarditis risk and prophylactic antibiotics during the first six months after surgery when indicated. Option B is incorrect because prophylactic antibiotics are not universally required daily for life. Option C is incorrect because routine dental care and oral hygiene are important in reducing infection risk. Option D is incorrect because ongoing cardiology follow-up remains essential after surgery. Correct Answer: A

Question: A nurse is caring for an adolescent with a repaired congenital heart defect. The adolescent reports increasing shortness of breath during exercise several years after surgery. Which nursing response is most appropriate? Answer Choices: A) Explain that recurrent symptoms can occur and arrange further cardiovascular evaluation. B) Reassure the adolescent that corrective surgery eliminates all future cardiac complications. C) Recommend avoiding all physical activity permanently. D) Explain that shortness of breath is unrelated to congenital heart disease after childhood.

Option A is correct because patients with congenital heart defects may develop recurrent symptoms or late complications after initial treatment. Residual defects, arrhythmias, heart failure, and other cardiovascular problems may develop during adolescence or adulthood. Option B is incorrect because corrective surgery does not guarantee lifelong freedom from complications. Option C is incorrect because activity recommendations should be individualized based on cardiac status rather than automatically prohibiting all exercise. Option D is incorrect because congenital heart disease can continue to affect patients throughout adulthood. Correct Answer: A

Question: A nurse is providing anticipatory guidance to the parents of a child with congenital heart disease. Which recommendation best supports long-term health? Answer Choices: A) Maintain regular cardiology follow-up and discuss activity recommendations with the healthcare provider. B) Discontinue follow-up once symptoms improve. C) Avoid all physical activity regardless of the defect. D) Seek cardiac evaluation only when cyanosis develops.

Option A is correct because ongoing cardiology follow-up is important throughout the lifespan. Some defects may cause late complications even after corrective treatment, and activity recommendations should be based on the individual child's cardiac function. Option B is incorrect because symptom improvement does not eliminate the possibility of residual defects or future complications. Option C is incorrect because activity should be individualized, and many children can participate in appropriate activities. Option D is incorrect because complications may develop without cyanosis, including arrhythmias and heart failure. Correct Answer: A

Question: A nurse is caring for a pregnant woman with a history of congenital heart disease. Which statement regarding pregnancy is most accurate? Answer Choices: A) Pregnancy may increase cardiac workload because blood volume rises substantially. B) Pregnancy decreases cardiac output and reduces cardiac workload. C) Pregnancy eliminates the risk of arrhythmias in women with congenital defects. D) Cesarean delivery is always safer than vaginal delivery.

Option A is correct because maternal blood volume increases by approximately 50% during pregnancy, increasing cardiac workload. This can exacerbate symptoms in women with congenital heart disease, depending on the underlying defect and cardiac function. Option B is incorrect because pregnancy increases rather than decreases cardiovascular demands. Option C is incorrect because pregnancy may increase the risk of cardiovascular complications. Option D is incorrect because vaginal delivery is preferred for many women with congenital heart disease due to lower blood loss, although delivery planning must be individualized. Correct Answer: A

Question: A nurse is discussing delivery planning with a pregnant woman who has congenital heart disease. Which statement should the nurse include? Answer Choices: A) Vaginal delivery is preferred for many women when cardiac status permits. B) Cesarean delivery is mandatory for every woman with congenital heart disease. C) Labor should always be avoided because it increases cardiac output. D) Delivery planning does not require consultation with cardiology.

Option A is correct because vaginal delivery is preferred for many women with congenital heart disease because it generally involves less blood loss than cesarean delivery. However, specific cardiac conditions may make cesarean delivery necessary. Option B is incorrect because congenital heart disease does not automatically require cesarean delivery. Option C is incorrect because delivery planning must consider maternal and fetal risks rather than automatically avoiding labor. Option D is incorrect because multidisciplinary planning and cardiology consultation are important for maternal safety. Correct Answer: A

Question: A nurse is assessing an older adult with a history of congenital heart disease that was surgically corrected during childhood. Which statement is most accurate? Answer Choices: A) Previous corrective surgery eliminates the need for cardiovascular assessment later in life. B) Residual or recurrent cardiac complications may develop during adulthood. C) Congenital heart disease cannot affect adults who survived infancy. D) Cardiovascular risk is identical in all adults regardless of congenital history.

Option A is incorrect because surgical correction does not eliminate the possibility of late complications. Option B is correct because scarring, residual structural abnormalities, arrhythmias, heart failure, pulmonary hypertension, and other complications may develop in adulthood. Option C is incorrect because many patients with congenital heart disease survive into adulthood and require lifelong monitoring. Option D is incorrect because individual risk depends on the defect, previo interventions, and current cardiac function. Correct Answer: B

Question: A nurse is caring for an infant with a congenital heart defect and signs of heart failure. Which nursing intervention best reduces myocardial oxygen demand during feeding? Answer Choices: A) Provide rest periods and cluster care to limit unnecessary energy expenditure. B) Encourage prolonged feeding sessions to maximize intake. C) Schedule multiple stressful procedures immediately before feeding. D) Increase stimulation during periods of respiratory distress.

Option A is correct because infants with congenital heart disease have increased metabolic demands and may fatigue easily. Clustering care and providing rest periods help conserve energy and reduce unnecessary oxygen consumption. Option B is incorrect because prolonged feeding increases fatigue and oxygen demand. Option C is incorrect because stressful procedures can increase energy expenditure and should be planned to minimize unnecessary physiologic stress. Option D is incorrect because increased stimulation during respiratory distress can worsen oxygen demand. Correct Answer: A

Question: A nurse is planning care for an infant with congenital heart disease who is at risk for skin breakdown because of edema and decreased mobility. Which intervention is most appropriate? Answer Choices: A) Reposition frequently and inspect pressure points. B) Massage areas of persistent redness. C) Restrict all movement to prevent increased oxygen demand. D) Apply tight dressings over edematous extremities.

Option A is correct because edema and decreased mobility increase the risk of impaired skin integrity. Frequent repositioning, careful skin inspection, and appropriate pressure prevention help reduce injury. Option B is incorrect because massaging reddened pressure areas can cause further tissue damage. Option C is incorrect because unnecessary immobility increases pressure injury risk. Option D is incorrect because tight dressings can impair circulation and worsen tissue perfusion. Correct Answer: A

Question: A nurse is assessing an infant with a VSD who has increased respiratory effort, crackles, and poor weight gain. Which additional finding would most strongly support a diagnosis of heart failure? Answer Choices: A) Hepatomegaly and peripheral edema. B) Strong peripheral pulses with no respiratory symptoms. C) Decreased heart rate with normal feeding tolerance. D) Increased activity and improved growth.

Option A is correct because fluid congestion may cause hepatomegaly and peripheral edema, while pulmonary congestion produces crackles and increased respiratory effort. These findings support heart failure associated with significant left-to-right shunting. Option B is incorrect because the absence of respiratory symptoms does not support the suspected heart failure picture. Option C is incorrect because normal feeding tolerance and the absence of congestion are not characteristic of worsening heart failure. Option D is incorrect because increased activity and improved growth suggest improvement rather than decompensation. Correct Answer: A

Question: A nurse is caring for a newborn with a congenital heart defect who is being monitored for possible shock. Which finding provides the strongest evidence of impaired renal perfusion? Answer Choices: A) Decreased urine output. B) Increased feeding duration. C) Mild diaphoresis during crying. D) A stable systolic murmur.

Option A is correct because the kidneys depend on adequate cardiac output and systemic blood pressure to maintain filtration. Decreased urine output can indicate reduced renal perfusion and worsening cardiac output. Option B is incorrect because prolonged feeding may indicate fatigue but does not directly assess renal perfusion. Option C is incorrect because diaphoresis may reflect increased metabolic demand but is not a direct measure of renal blood flow. Option D is incorrect because a stable murmur does not establish renal perfusion status. Correct Answer: A

Question: A nurse is evaluating the effectiveness of a care plan for an infant with congenital heart disease and heart failure. Which finding best demonstrates improvement in perfusion and cardiac function? Answer Choices: A) Increased energy, improved feeding intake, and decreased edema. B) Increasing tachypnea and worsening diaphoresis. C) Decreased urine output and progressive weight gain from fluid retention. D) New cyanosis and reduced activity tolerance.

Option A is correct because improved energy, feeding tolerance, and reduced edema indicate improved cardiac function, nutritional status, and fluid balance. These are consistent with the expected outcomes in the PDF's nursing care plan. Option B is incorrect because increasing tachypnea and diaphoresis suggest worsening cardiopulmonary compromise. Option C is incorrect because decreased urine output and fluid-related weight gain suggest worsening fluid overload and impaired perfusion. Option D is incorrect because new cyanosis and reduced activity tolerance suggest worsening oxygenation and cardiac function. Correct Answer: A

Question: A nurse is reviewing the nursing care priorities for a newborn with a VSD who develops worsening heart failure. Which intervention should the nurse prioritize? Answer Choices: A) Support oxygenation and assess cardiac output while implementing prescribed fluid management. B) Focus exclusively on parental education before addressing the infant's respiratory status. C) Increase feeding volume immediately to correct poor weight gain. D) Delay cardiac assessment until diagnostic imaging is completed.

Option A is correct because the immediate priorities are maintaining oxygenation and supporting systemic perfusion while addressing fluid overload and the underlying cardiac condition. The nurse should assess respiratory status, heart rate, oxygen saturation, perfusion, fluid balance, and response to prescribed treatment. Option B is incorrect because parental education is important but must not delay stabilization of the infant. Option C is incorrect because increasing feeding volume may worsen fatigue and respiratory distress. Option D is incorrect because nursing assessment and stabilization must occur without waiting for diagnostic imaging. Correct Answer: A

Question: A nurse is preparing parents for discharge after their infant undergoes congenital heart surgery. Which instruction best supports safe care at home? Answer Choices: A) Review wound care, medication administration, signs of infection, and symptoms requiring immediate medical attention. B) Explain that follow-up appointments are unnecessary after discharge. C) Encourage the parents to discontinue medications once feeding improves. D) Recommend unrestricted activity immediately after surgery.

Option A is correct because discharge preparation includes teaching the family about the child's condition, medications, wound care, activity, infection prevention, follow-up, and when to seek medical assistance. Option B is incorrect because ongoing follow-up is necessary to evaluate recovery and identify complications. Option C is incorrect because medications must be continued or adjusted according to provider instructions. Option D is incorrect because activity should gradually increase according to the child's recovery and surgical instructions. Correct Answer: A

Question: A nurse is caring for an infant with congenital heart disease whose parents are overwhelmed by the diagnosis and potential need for multiple surgeries. Which nursing intervention is most appropriate? Answer Choices: A) Provide emotional support, assess available family resources, and encourage questions. B) Avoid discussing the diagnosis to prevent increasing parental anxiety. C) Tell the parents that all infants with congenital heart defects have the same prognosis. D) Encourage the parents to make decisions without consulting the healthcare team.

Option A is correct because parents may experience fear, anxiety, confusion, and difficulty making treatment decisions. The nurse should establish communication, identify support systems, provide understandable information, and connect families with appropriate resources. Option B is incorrect because avoiding communication can increase anxiety and prevent informed decision-making. Option C is incorrect because prognosis varies according to defect type, severity, treatment, and associated complications. Option D is incorrect because shared decision-making with the healthcare team supports safe and informed care. Correct Answer: A

Question: A nurse is providing education to the parents of an infant with a congenital heart defect. Which statement best demonstrates appropriate family-centered care? Answer Choices: A) "We will explain the condition and treatment options in language that you understand and encourage your questions." B) "You should avoid asking questions until the entire treatment plan is finalized." C) "Only the cardiologist needs to understand the family's concerns." D) "Your role is limited to signing consent forms for procedures."

Option A is correct because family-centered care includes clear communication, emotional support, education, and involving parents in decisions about their child's care. Option B is incorrect because parents should be encouraged to ask questions throughout the treatment process. Option C is incorrect because nurses play an important role in assessing and addressing family concerns. Option D is incorrect because parents are essential participants in the child's ongoing care and treatment planning. Correct Answer: A

Question: A nurse is assessing a newborn with a congenital heart defect. The newborn has a heart murmur but no cyanosis, respiratory distress, or feeding difficulties. Which nursing interpretation is most appropriate? Answer Choices: A) A minor defect may present with a murmur as the only clinical finding. B) The absence of cyanosis rules out congenital heart disease. C) The murmur confirms severe right-to-left shunting. D) Immediate open-heart surgery is required for every murmur.

Option A is correct because the PDF explains that minor defects, such as some ASDs, may present with a murmur as the only clinical manifestation. The nurse should still ensure appropriate diagnostic evaluation and follow-up. Option B is incorrect because many congenital heart defects are acyanotic. Option C is incorrect because a murmur does not automatically indicate right-to-left shunting. Option D is incorrect because treatment depends on the specific defect and its hemodynamic significance. Correct Answer: A

Question: A nurse is reviewing a newborn's echocardiogram and learns that the infant has a small VSD. Which explanation best describes why the infant may initially have minimal symptoms but develop signs of heart failure later? Answer Choices: A) Pulmonary vascular resistance decreases after birth, increasing left-to-right shunting. B) Systemic vascular resistance decreases progressively, eliminating pulmonary blood flow. C) The VSD closes immediately after birth and reopens during feeding. D) Right ventricular pressure remains higher than left ventricular pressure throughout infancy.

Option A is correct because pulmonary vascular resistance is relatively high before birth and decreases after delivery. As pulmonary resistance falls, blood can flow more readily from the higher-pressure left ventricle through the VSD into the right ventricle, increasing pulmonary circulation and cardiac workload. Option B is incorrect because this does not describe the normal hemodynamic changes that explain increasing left-to-right shunting. Option C is incorrect because VSDs do not typically close and reopen in response to feeding. Option D is incorrect because left ventricular pressure is normally higher than right ventricular pressure, producing the typical left-to-right shunt. Correct Answer: A

Question: A nurse is caring for a child with a congenital heart defect who is experiencing increased pulmonary blood flow. Which complication should the nurse recognize as a potential consequence of prolonged pulmonary overcirculation? Answer Choices: A) Increased pulmonary vascular resistance and pulmonary hypertension. B) Permanent reduction in right ventricular workload. C) Decreased pulmonary vascular congestion. D) Complete elimination of intracardiac shunting without intervention.

Option A is correct because prolonged excessive pulmonary blood flow can cause pulmonary vascular changes and increased pulmonary vascular resistance. This may eventually worsen hemodynamics and contribute to pulmonary hypertension. Option B is incorrect because excessive pulmonary circulation increases rather than eliminates cardiac workload. Option C is incorrect because increased pulmonary blood flow can contribute to pulmonary congestion rather than prevent it. Option D is incorrect because the structural defect does not necessarily resolve without intervention. Correct Answer: A

Question: A nurse is caring for an infant with a cyanotic congenital heart defect who has a history of sudden hypoxemic episodes. Which finding should the nurse recognize as a potential trigger for a hypercyanotic episode? Answer Choices: A) Increased crying and agitation. B) Quiet sleep with stable oxygen saturation. C) Resting after a feeding. D) Improved respiratory effort.

Option A is correct because crying, agitation, and increased metabolic demand can increase oxygen consumption and contribute to an acute worsening of right-to-left shunting and hypoxemia. Option B is incorrect because quiet sleep with stable oxygenation is not a typical trigger. Option C is incorrect because resting generally reduces oxygen demand. Option D is incorrect because improved respiratory effort suggests clinical stabilization rather than a trigger for deterioration. Correct Answer: A

Question: A nurse is caring for a newborn with a congenital heart defect and a suspected critical reduction in systemic blood flow. Which assessment finding most strongly suggests that the infant's condition is deteriorating? Answer Choices: A) Increasing lethargy, weak pulses, and delayed capillary refill. B) Improved feeding, warm extremities, and normal urine output. C) Stable respiratory rate and normal oxygen saturation. D) Strong peripheral pulses and increased activity.

Option A is correct because lethargy, weak pulses, and delayed capillary refill are concerning signs of reduced cardiac output and inadequate systemic perfusion. These findings require prompt intervention. Option B is incorrect because improved feeding, warm extremities, and normal urine output suggest adequate perfusion. Option C is incorrect because stable respiratory and oxygenation findings are reassuring, although ongoing assessment is still necessary. Option D is incorrect because strong pulses and increased activity do not suggest deteriorating systemic circulation. Correct Answer: A

Question: A nurse is caring for an infant with a congenital heart defect who is receiving prescribed oxygen. Which nursing action is most appropriate? Answer Choices: A) Monitor oxygen saturation, respiratory effort, and the infant's clinical response. B) Discontinue oxygen once the infant becomes quiet. C) Increase oxygen flow without assessing the infant or verifying orders. D) Assume that oxygen administration corrects the structural defect.

Option A is correct because oxygen therapy requires ongoing evaluation of oxygenation, respiratory status, and response to treatment. Oxygen may support the infant's needs but does not correct the underlying structural defect. Option B is incorrect because quiet behavior does not establish adequate oxygenation. Option C is incorrect because oxygen should be administered and adjusted according to clinical assessment and prescribed parameters. Option D is incorrect because oxygen supports oxygen delivery but does not repair the anatomical defect. Correct Answer: A

Question: A nurse is reviewing a child's care following congenital heart surgery. Which finding most strongly suggests that the expected outcome of adequate perfusion has been achieved? Answer Choices: A) Warm extremities, appropriate urine output, and improved activity tolerance. B) Persistent cyanosis, weak pulses, and increasing lethargy. C) Progressive edema and decreasing urine output. D) Increasing respiratory effort and poor feeding.

Option A is correct because warm extremities, adequate urine output, and improved activity tolerance suggest improved systemic blood flow and tissue oxygen delivery. Option B is incorrect because persistent cyanosis and weak pulses suggest inadequate oxygenation and perfusion. Option C is incorrect because edema and decreased urine output may indicate fluid overload and impaired cardiac output. Option D is incorrect because respiratory distress and feeding intolerance suggest ongoing cardiopulmonary compromise. Correct Answer: A

Question: A nurse is reviewing the relationship between congenital heart defects and previously learned perfusion concepts. Which statement best describes the effect of reduced cardiac output on the kidneys? Answer Choices: A) Reduced renal blood flow can decrease glomerular filtration and urine output. B) Reduced renal blood flow increases urine output by stimulating filtration. C) Renal perfusion is independent of systemic cardiac output. D) Reduced cardiac output causes immediate increased renal oxygen delivery.

Option A is correct because the kidneys require adequate systemic blood flow to maintain filtration. When cardiac output decreases, renal perfusion may fall, causing decreased urine output and potentially worsening fluid and electrolyte imbalances. Option B is incorrect because reduced renal blood flow generally decreases rather than increases filtration. Option C is incorrect because renal perfusion depends on systemic circulation and cardiac output. Option D is incorrect because reduced cardiac output decreases oxygen delivery rather than increasing it. Correct Answer: A

Question: A nurse is caring for a child with congenital heart disease who has decreased cardiac output and is receiving diuretic therapy. Which complication should the nurse monitor for most closely? Answer Choices: A) Electrolyte imbalance and dehydration. B) Increased bone growth. C) Hyperglycemia from increased pulmonary blood flow. D) Permanent closure of all intracardiac defects.

Option A is correct because diuretics increase fluid excretion and may cause dehydration and electrolyte abnormalities, particularly potassium disturbances. These changes can affect cardiac rhythm and increase the risk of digoxin toxicity when the child is also receiving digoxin. Option B is incorrect because increased bone growth is not a primary complication of diuretic therapy. Option C is incorrect because hyperglycemia is not the primary complication described in this context. Option D is incorrect because diuretics do not close structural cardiac defects. Correct Answer: A

Question: A nurse is caring for an infant with congenital heart disease who is prescribed digoxin and a diuretic. The infant develops vomiting, poor feeding, and an abnormal heart rhythm. Which nursing action is most appropriate? Answer Choices: A) Suspect possible digoxin toxicity, assess the infant, and notify the healthcare provider. B) Administer an additional dose of digoxin to improve cardiac output. C) Discontinue all medications permanently without notifying the provider. D) Increase the diuretic dose to correct the abnormal rhythm.

Option A is correct because gastrointestinal symptoms and dysrhythmias may indicate digoxin toxicity. The nurse should assess the apical heart rate, review medication administration, monitor potassium levels, and promptly notify the provider. Option B is incorrect because administering additional digoxin could worsen toxicity. Option C is incorrect because medication changes must be made with appropriate clinical guidance. Option D is incorrect because increasing a diureticmay worsen electrolyte disturbances and increase toxicity risk. Correct Answer: A

Question: A nurse is caring for an infant with congenital heart disease who has difficulty gaining weight. Which finding indicates that the infant's nutritional intervention is effective? Answer Choices: A) Appropriate weight gain with improved feeding tolerance and reduced fatigue. B) Increased feeding time with worsening diaphoresis. C) Continued weight loss despite increased feeding volume. D) Decreased urine output and increasing edema.

Option A is correct because appropriate weight gain and improved feeding tolerance indicate that nutritional needs are being met without excessive energy expenditure. Option B is incorrect because worsening diaphoresis and prolonged feeding indicate ongoing cardiac strain. Option C is incorrect because continued weight loss indicates inadequate nutritional intake or increased metabolic demands. Option D is incorrect because decreased urine output and edema suggest impaired fluid balance and possible heart failure. Correct Answer: A

Question: A nurse is caring for a child with a congenital heart defect who is scheduled for repeated cardiac procedures. Which nursing intervention best supports developmentally appropriate care? Answer Choices: A) Explain procedures using age-appropriate language and prepare the child for the environment. B) Provide detailed technical descriptions regardless of the child's developmental level. C) Avoid allowing the child to ask questions. D) Separate the child from the family throughout the entire hospitalization.

Option A is correct because children should receive developmentally appropriate explanations to reduce fear and promote understanding. Preparation may include describing the procedure, touring the environment when appropriate, and encouraging questions. Option B is incorrect because overly technical explanations may increase anxiety and confusion. Option C is incorrect because encouraging questions supports coping and trust. Option D is incorrect because family involvement can provide important emotional support. Correct Answer: A

Question: A nurse is assessing an infant with congenital heart disease and a possible increase in pulmonary blood flow. Which assessment finding is most useful when evaluating respiratory compromise? Answer Choices: A) Respiratory rate, depth, effort, and adventitious lung sounds. B) Head circumference and fontanel assessment only. C) Pupillary response and muscle tone only. D) Bowel sounds and abdominal girth only.

Option A is correct because increased pulmonary blood flow and heart failure can cause tachypnea, dyspnea, increased respiratory effort, and pulmonary crackles. A complete respiratory assessment helps identify deterioration. Option B is incorrect because neurological and growth assessments are important but do not directly evaluate respiratory compromise. Option C is incorrect because neurological findings do not replace respiratory assessment. Option D is incorrect because gastrointestinal assessment does not directly evaluate pulmonary function. Correct Answer: A

Question: A nurse is assessing an infant with congenital heart disease who has a suspected reduction in systemic perfusion. Which assessment finding is most useful for evaluating peripheral circulation? Answer Choices: A) Pulse quality, capillary refill, extremity temperature, and skin color. B) Feeding preference and sleeping schedule only. C) Presence of a heart murmur without additional assessment. D) Abdominal bowel sounds and stool consistency.

Option A is correct because peripheral pulses, capillary refill, extremity warmth, and skin color provide important information about tissue perfusion. Changes in these findings can indicate decreased cardiac output and systemic circulation. Option B is incorrect because feeding and sleeping patterns may provide additional information but do not directly evaluate peripheral circulation. Option C is incorrect because a murmur alone does not assess tissue perfusion. Option D is incorrect because bowel sounds and stool consistency do not directly evaluate peripheral circulation. Correct Answer: A

Question: A nurse is evaluating a newborn with a congenital heart defect and suspects fluid volume excess. Which assessment finding provides the strongest supporting evidence? Answer Choices: A) Rapid weight gain, edema, and pulmonary crackles. B) Weight loss, dry mucous membranes, and decreased skin turgor. C) Warm extremities, normal urine output, and improved feeding. D) Increased activity and decreased respiratory effort.

Option A is correct because rapid weight gain, edema, and crackles indicate fluid accumulation in the interstitial and pulmonary spaces. Option B is incorrect because these findings are more consistent with dehydration. Option C is incorrect because these findings suggest improved perfusion and fluid balance. Option D is incorrect because increased activity and decreased respiratory effort suggest clinical improvement rather than fluid overload. Correct Answer: A

Question: A nurse is reviewing the care plan for a child with congenital heart disease. Which outcome best demonstrates that the family has achieved an appropriate level of understanding and participation in care? Answer Choices: A) Parents can explain the diagnosis, medications, warning signs, and follow-up plan. B) Parents depend entirely on emergency services for routine medication questions. C) Parents avoid discussing the child's condition to reduce anxiety. D) Parents discontinue follow-up when the child becomes asymptomatic.

Option A is correct because effective family teaching includes understanding the defect, prescribed treatment, warning signs, and the importance of follow-up. Parents should also know when and where to seek assistance. Option B is incorrect because families should be equipped to manage routine care and recognize situations requiring urgent assistance. Option C is incorrect because open communication supports coping and informed participation. Option D is incorrect because asymptomatic status does not eliminate the need for ongoing cardiology follow-up. Correct Answer: A

Question: A nurse is assessing a child with congenital heart disease who is experiencing new chest pain, dizziness, and exercise intolerance. Which action should the nurse take? Answer Choices: A) Stop the activity and obtain prompt cardiovascular assessment. B) Encourage the child to continue exercising to improve endurance. C) Reassure the child that symptoms are expected in all congenital defects. D) Delay evaluation until the next routine cardiology appointment.

Option A is correct because chest pain, dizziness, and excessive fatigue during activity may indicate inadequate cardiac compensation or dysrhythmia. Activity should stop and the child should be evaluated promptly. Option B is incorrect because continuing activity could worsen myocardial oxygen demand and compromise. Option C is incorrect because these symptoms should never automatically be considered normal. Option D is incorrect because new symptoms require timely assessment rather than delayed evaluation. Correct Answer: A

Question: A nurse is caring for a newborn with suspected critical congenital heart disease. The infant develops shock as the ductus arteriosus begins to close. Which explanation best describes why this may occur in certain defects? Answer Choices: A) Ductal closure can remove a necessary pathway for pulmonary or systemic blood flow. B) Ductal closure always increases oxygen delivery to all organs. C) Ductal closure causes the atrial septum to close immediately. D) Ductal closure increases ventricular contractility and prevents shock.

Option A is correct because certain critical congenital heart defects depend on ductal patency to maintain adequate pulmonary or systemic circulation. As the ductus closes, blood flow through the alternative pathway decreases, potentially causing severe hypoxemia, reduced cardiac output, and shock. Option B is incorrect because ductal closure may be life-threatening in duct-dependent defects. Option C is incorrect because the ductus arteriosus and atrial septum are separate structures. Option D is incorrect because ductal closure does not directly increase ventricular contractility or prevent shock. Correct Answer: A