ATI NOTES
Coronary Artery Disease (CAD)
Risk Factors
Family history
Diabetes
Hypertension
Smoking
Obesity
Sedentary lifestyle
Hyperlipidemia
Chronic inflammatory diseases
Pathophysiology
Coronary artery disease (CAD) involves atherosclerosis.
Mechanism:
Plaques form in the coronary arteries due to endothelial damage and inflammation.
This plaque build-up reduces blood flow and oxygen delivery to the myocardium (heart muscle).
Expected Findings
Chest pain (angina)
Shortness of breath
Fatigue
Nausea
Severe cases may show signs of myocardial infarction (heart attack).
Priority Nursing Assessments
Assess:
Chest pain intensity and characteristics
ECG changes for abnormalities
Vital signs including blood pressure and heart rate
Oxygen saturation
Symptoms of myocardial ischemia (reduced blood flow to heart).
Definition
Coronary artery disease (CAD): A condition resulting from the buildup of lipid-based plaques in coronary arteries, causing decreased or blocked blood supply to the heart muscle.
Atrial Fibrillation (AF)
Pathophysiology
Atrial fibrillation (AF) occurs when the atria quiver instead of contracting effectively.
Consequences:
Pooling of blood in the atria
Reduced cardiac output
Increases the risk of thrombus formation, stroke, or embolism.
Definition
Atrial fibrillation (AF): A rapid, irregular heart rhythm caused by disorganized electrical signals in the atria, leading to ineffective atrial contractions.
Risk Factors
Hypertension
Coronary artery disease
Heart failure
Diabetes
Obesity
Hyperthyroidism
Excessive alcohol consumption
Advancing age
Expected Findings
Irregular heart rhythm
Palpitations
Chest pain
Shortness of breath
Fatigue
Dizziness
Dependent edema (swelling due to fluid accumulation).
Priority Nursing Assessments
Assess:
Irregular heart rate
Monitor ECG for lack of clear P waves and irregular rhythm
Evaluate symptoms of decreased perfusion (dizziness, syncope)
Monitor for signs of thrombus formation.
Priority Nursing Interventions
Administer prescribed medications such as:
Anticoagulants
Beta-blockers
Calcium channel blockers.
Prepare for electrical cardioversion if indicated.
Ensure adequate oxygenation.
Educate clients on lifestyle modifications and stroke prevention.
Complications
Stroke
Pulmonary embolism
Heart failure
Arrhythmias with rapid ventricular response
Chronic overtreatment effects (e.g., fractures from accelerated bone loss).
Heart Failure
Risk Factors
Hypertension
Coronary artery disease
Myocardial infarction (heart attack)
Diabetes
Obesity
Smoking
Chronic kidney disease.
Definition
Heart failure: A condition where the heart cannot pump effectively to meet the body's needs, leading to inadequate perfusion (blood flow) and fluid overload.
Pathophysiology
Results from structural or functional abnormalities impairing the heart's ability to fill or eject blood.
Categories:
Left-sided heart failure (systolic or diastolic)
Right-sided heart failure.
Expected Findings
Symptoms include:
Shortness of breath
Fatigue
Edema (swelling)
Jugular vein distention
Lung crackles (indicative of left-sided failure)
Pink frothy sputum (left-sided failure)
Abdominal distention or dependent edema (right-sided failure).
Priority Nursing Interventions
Administer:
Diuretics
Vasodilators.
Monitor:
Intake/output and daily weights
Elevate head of bed to assist breathing
Provide oxygen as necessary.
Educate clients on lifestyle changes, such as:
Low-sodium diet
Medication adherence.
Complications
Pulmonary edema
Respiratory failure
Renal dysfunction
Arrhythmias
Cardiogenic shock.
Priority Nursing Assessments
Monitor for signs of fluid overload (weight gain, peripheral edema).
Assess for respiratory distress (crackles, dyspnea).
Evaluate jugular vein distention and cardiac output (vital signs, heart sounds).
Check laboratory findings such as serum BNP levels and electrolytes.
Pericardial Effusion
Definition
Pericardial effusion: An abnormal accumulation of fluid in the pericardial sac surrounding the heart, which can impair cardiac function.
Expected Findings
Symptoms include:
Dyspnea (difficulty breathing)
Fatigue
Chest pain (worse when lying supine, better in high-Fowler's position)
Muffled heart sounds
Hypotension
Tachycardia
Jugular venous distension
Pulsus paradoxus (systolic BP drop of >10 mmHg during inspiration).
Risk Factors
Infections (e.g., pericarditis)
Cancers
Autoimmune diseases
Hypothyroidism
Trauma
Renal disease.
Pathophysiology
Excess fluid compresses heart chambers, limiting their ability to fill with blood and reducing cardiac output.
Severe cases may progress to cardiac tamponade, a life-threatening condition.
Priority Nursing Assessments
Monitor:
Vital signs
ECG changes (e.g., low-voltage QRS, electrical alternans).
Priority Nursing Interventions
Prepare clients for pericardiocentesis if indicated, ensuring NPO status for 8 hours before the procedure.
Monitor for hemodynamic stability before, during, and after the procedure.
Administer IV fluids as prescribed to maintain cardiac output.
Educate clients on follow-up care, including echocardiograms to check for fluid reaccumulation.
Beta-Blockers
Definition
Beta-blockers: A class of medications that block the effects of the sympathetic nervous system, used primarily to manage hypertension, arrhythmias, and other cardiovascular conditions.
Pathophysiology
Beta-blockers reduce heart rate, myocardial contractility, and renin release, which together lower blood pressure and decrease cardiac workload.
Expected Findings
Effects include:
Decreased heart rate and blood pressure
Reduced symptoms of angina
Improved control of arrhythmias.
Side effects may include:
Fatigue
Dizziness
Bradycardia
Bronchospasm.
Priority Nursing Assessments
Monitor:
Vital signs: blood pressure and heart rate (watch for bradycardia)
Respiratory symptoms in clients with respiratory conditions
Blood glucose levels in diabetics, as beta-blockers can mask hypoglycemia.
Complications
Cardiac tamponade
Obstructive shock
Progression to pulseless electrical activity (PEA)
Bradycardia
Hypotension.
Priority Nursing Interventions
Educate clients not to abruptly stop the medication to avoid rebound hypertension or tachycardia.
Teach clients how to monitor their heart rate and blood pressure at home.
Advise diabetic clients to check blood glucose levels closely.
Use cardioselective beta-blockers (e.g., metoprolol) for clients with respiratory issues.
Impending Cardiac Arrest
Definition
Impending cardiac arrest: Early signs and symptoms indicating the potential cessation of heart and respiratory function, including decreased cardiopulmonary function.
Expected Findings
Symptoms: dyspnea, fatigue, chest pain, lightheadedness, syncope, palpitations, back pain, flu-like symptoms, and a sense of impending doom.
Priority Nursing Assessments
Rapid assessment of:
Vital signs.
Heart rhythm.
Respiratory status.
Level of consciousness.
Monitor for signs of hypoxia or distress.
Pathophysiology
Often arises from cardiac dysfunction, ischemia, or arrhythmias, leading to reduced cardiac output and impaired oxygen delivery to tissues.
Priority Nursing Interventions
Follow CAB (Circulation, Airway, Breathing) framework for CPR.
Initiate high-quality chest compressions.
Call for emergency response.
Apply defibrillation per Advanced Cardiac Life Support (ACLS) protocols.
Risk Factors
Hypertension
Tobacco use
Obesity
Black race
History of cardiac disease
Coronary artery disease
Heart failure.
Sickle Cell Anemia
Definition
Sickle cell anemia: A genetic disorder resulting in abnormal hemoglobin production, causing red blood cells to become rigid, sticky, and sickle-shaped.
Pathophysiology
Sickle-shaped red blood cells have a shorter lifespan (10-20 days compared to 120 days for normal RBCs).
These cells clump together, blocking blood flow and oxygen delivery, causing pain and organ damage.
Risk Factors
Inherited condition most common in individuals of African, Mediterranean, Middle Eastern, and South Asian descent.
Triggers for exacerbations include dehydration, infection, stress, and extreme temperatures.
Expected Findings
Symptoms may include:
Fatigue
Pallor
Jaundice
Pain episodes (vaso-occlusive crises)
Swelling of hands and feet
Delayed growth
Frequent infections or visual changes.
Priority Nursing Assessments
Monitor pain levels using appropriate scales.
Perform skin and neurological assessments for complications.
Administer IV fluids to ensure hydration.
Monitor for signs of complications like stroke or infections.
Assess hydration status, oxygen levels, and vital signs.
Priority Nursing Interventions
Provide oxygen therapy as needed.
Evaluate for signs of infection, stroke, or acute chest syndrome.
Provide pain management with prescribed analgesics.
Deep Vein Thrombosis (DVT)
Definition
Deep vein thrombosis (DVT): A condition characterized by the formation of a blood clot (thrombus) in a deep vein, typically in the lower extremities.
Pathophysiology
Occurs when there is reduced blood flow, venous stasis, or endothelial injury, leading to clot formation.
Clots can block blood flow and may dislodge, causing a pulmonary embolism.
Risk Factors
Immobility
Surgery
Pregnancy
Obesity
Smoking
Advanced age
Use of oral contraceptives
Family or personal history of DVT.
Expected Findings
Clients may present with calf pain or tenderness, unilateral leg swelling, warmth, redness, and sometimes low-grade fever.
Complications
Potential complications include:
Stroke
Acute chest syndrome
Organ damage
Infections
Chronic pain
Early mortality.
Priority Nursing Assessments
Monitor for signs of complications like pulmonary embolism, which may include sudden shortness of breath or chest pain.
Priority Nursing Interventions
Administer anticoagulants as prescribed and monitor for bleeding.
Encourage early ambulation and leg exercises if appropriate.
Apply sequential compression devices or compression stockings as ordered.
Iron Deficiency Anemia (IDA)
Definition
Iron deficiency anemia (IDA): A condition characterized by a decrease in hemoglobin levels due to insufficient iron, impairing the blood’s ability to transport oxygen.
Pathophysiology
Occurs when iron stores are depleted, leading to reduced hemoglobin synthesis and decreasing oxygen delivery to tissues.
Risk Factors
Inadequate dietary intake of iron (e.g., vegetarians or low heme iron intake).
Malabsorption conditions (e.g., gastric bypass, celiac disease).
Chronic blood loss (e.g., menorrhagia, gastrointestinal bleeding).
Expected Findings
Symptoms include fatigue, pallor, dizziness, headaches, cold hands and feet, shortness of breath on exertion, and tachycardia.
Priority Nursing Assessments
Assess for fatigue, pallor, and activity intolerance.
Evaluate dietary intake of iron and risk for chronic blood loss.
Monitor hemoglobin, hematocrit, and ferritin levels.
Priority Nursing Interventions
Provide energy conservation strategies to manage fatigue.
Encourage consumption of iron-rich foods (e.g., red meat, dark leafy greens, fortified cereals).
Administer prescribed iron supplements and educate on proper use (e.g., take on an empty stomach with vitamin C for better absorption).
Monitor for adverse effects of iron therapy (e.g., constipation, black stools).
Vitamin B12 Deficiency
Definition
Vitamin B12 deficiency anemia: A condition occurring when the body lacks sufficient vitamin B12 essential for red blood cell production, DNA synthesis, and neurological function.
Pathophysiology
B12 is absorbed in the terminal ileum with the help of intrinsic factor, produced by gastric parietal cells. Deficiency may be due to inadequate intake, malabsorption, or lack of intrinsic factor.
Expected Findings
Neurologic symptoms may include paresthesia, numbness, difficulty walking, memory loss, confusion, or depression.
Physical symptoms include fatigue, weakness, and pallor.
Priority Nursing Assessments
Administer prescribed vitamin B12 therapy (oral, intramuscular, or nasal spray) as needed.
Monitor laboratory values (e.g., hemoglobin, hematocrit, vitamin B12 levels).
Priority Nursing Interventions
Evaluate improvement in symptoms and monitor for adverse effects of treatment.
Type 1 Diabetes Mellitus
Definition
Type 1 diabetes mellitus: A chronic autoimmune condition in which the pancreas produces little to no insulin, resulting in elevated blood glucose levels.
Pathophysiology
Results from autoimmune destruction of insulin-producing beta cells in the pancreas, leading to absolute insulin deficiency and hyperglycemia.
Expected Findings
Symptoms include polydipsia (increased thirst), polyuria (increased urination), blurred vision, polyphagia (increased hunger), fatigue, weakness, and unintended weight loss.
Complications
Diabetic ketoacidosis (DKA) is a serious complication characterized by hypoglycemia, ketoacidosis, and potential for coma.
Priority Nursing Assessments
Teach clients to monitor blood glucose levels and recognize signs of hypo- and hyperglycemia.
Promote adherence to prescribed insulin regimen and glucose monitoring schedule.
Type 2 Diabetes Mellitus
Definition
Type 2 diabetes mellitus: A chronic condition characterized by insulin resistance and relative deficiency in insulin production, leading to elevated blood glucose levels.
Pathophysiology
Results from impaired insulin signaling and decreased insulin sensitivity, often compounded by insufficient insulin secretion from pancreatic beta cells.
Expected Findings
Symptoms include slow wound healing, frequent infections, excessive thirst, frequent urination, fatigue, blurred vision, and unexplained weight changes.
Complications
Long-term microvascular complications (e.g., retinopathy, nephropathy, neuropathy).
Priority Nursing Assessments
Monitor blood glucose levels regularly.
Evaluate adherence to prescribed medications, dietary plans, and exercise routines.
Hyperglycemic Hyperosmolar State (HHS)
Definition
Hyperglycemic Hyperosmolar State (HHS): A life-threatening complication of diabetes mellitus, characterized by severe hyperglycemia, hyperosmolarity, and dehydration, without significant ketosis or acidosis.
Pathophysiology
Results from relative insulin deficiency, leading to extreme hyperglycemia and osmotic diuresis. Prolonged dehydration increases serum osmolality, causing neurological changes and risk of cardiovascular collapse.
Risk Factors
Type 2 diabetes mellitus, stress, surgery, or trauma; use of medications such as corticosteroids.
Expected Findings
Neurological changes may include confusion, seizures, or reversible paralysis.
Priority Nursing Assessments
Assess hydration status and monitor for signs of severe dehydration.