Medical-Surgical Cardiovascular Disorders Exam Prep – Real Practice Questions,
Answers & Detailed Rationales (Updated 2026) | Heart Failure & Coronary Artery
Disease, Hypertension & Shock Management, Dysrhythmias & ECG Interpretation,
Myocardial Infarction & Angina, Cardiac Pharmacology, Hemodynamic Monitoring,
Nursing Interventions, Patient Education & NCLEX-Style Clinical Scenarios
Question 1: A 68-year-old male with a history of hypertension and hyperlipidemia
presents with substernal chest pain radiating to his left arm, occurring with
exertion and relieved by rest. Which pathophysiological process best explains this
presentation?
A. Complete thrombotic occlusion of a coronary artery
B. Transient myocardial ischemia due to fixed coronary stenosis
C. Inflammatory infiltration of the myocardium
D. Rupture of the ventricular free wall
CORRECT ANSWER: B. Transient myocardial ischemia due to fixed coronary
stenosis
Rationale:This patient describes classic stable angina pectoris, which results from a
temporary imbalance between myocardial oxygen supply and demand in the setting of
atherosclerotic coronary artery disease. Fixed stenosis limits coronary blood flow
during increased demand (e.g., exertion), causing reversible ischemia. Complete
occlusion (A) describes acute myocardial infarction; inflammatory infiltration (C)
suggests myocarditis; ventricular rupture (D) is a catastrophic complication of MI, not
stable angina.
Question 2: Which electrocardiogram (ECG) finding is most characteristic of acute
inferior wall myocardial infarction?
A. ST-segment elevation in leads V1–V4
B. ST-segment elevation in leads II, III, and aVF
C. New left bundle branch block
D. T-wave inversion in leads V5–V6
CORRECT ANSWER: B. ST-segment elevation in leads II, III, and aVF
Rationale:The inferior wall of the left ventricle is supplied by the right coronary artery (in
~85% of individuals) or the left circumflex artery. Ischemia or infarction in this region
produces ST-segment elevation in the inferior leads: II, III, and aVF. Anterior wall MI (A)
shows changes in V1–V4; new LBBB (C) may indicate extensive anterior ischemia but is
nonspecific; lateral ischemia (D) involves V5–V6, I, and aVL.
Question 3: A patient with acute decompensated heart failure presents with
orthopnea, bilateral crackles, and an S3 gallop. Which hemodynamic parameter is
most likely elevated?
A. Systemic vascular resistance
B. Pulmonary capillary wedge pressure
,C. Right atrial pressure
D. Cardiac index
CORRECT ANSWER: B. Pulmonary capillary wedge pressure
Rationale:The clinical triad of orthopnea, pulmonary crackles, and S3 gallop indicates
left-sided heart failure with pulmonary venous congestion. Pulmonary capillary wedge
pressure (PCWP), measured via pulmonary artery catheter, reflects left atrial pressure
and is elevated (>18 mmHg) in left ventricular failure. Systemic vascular resistance (A)
may be elevated as a compensatory mechanism but is not the primary abnormality;
right atrial pressure (C) reflects right-sided function; cardiac index (D) is typically
decreased, not elevated.
Question 4: Which medication is contraindicated in a patient with heart failure with
reduced ejection fraction (HFrEF) and symptomatic bradycardia?
A. Lisinopril
B. Metoprolol succinate
C. Furosemide
D. Spironolactone
CORRECT ANSWER: B. Metoprolol succinate
Rationale:Beta-blockers like metoprolol succinate are guideline-directed medical
therapy for HFrEF but are contraindicated in patients with symptomatic bradycardia,
high-grade heart block, or cardiogenic shock due to their negative chronotropic effects.
ACE inhibitors (A), loop diuretics (C), and mineralocorticoid receptor antagonists (D) do
not directly worsen bradycardia and remain appropriate with monitoring.
Question 5: A 72-year-old female with atrial fibrillation is prescribed warfarin.
Which laboratory value must be monitored to assess therapeutic anticoagulation?
A. Platelet count
B. International normalized ratio (INR)
C. Activated partial thromboplastin time (aPTT)
D. D-dimer
CORRECT ANSWER: B. International normalized ratio (INR)
Rationale:Warfarin inhibits vitamin K–dependent clotting factors (II, VII, IX, X), and its
anticoagulant effect is monitored using the INR, with a target range of 2.0–3.0 for most
indications including atrial fibrillation. Platelet count (A) monitors for heparin-induced
thrombocytopenia; aPTT (C) is used for unfractionated heparin; D-dimer (D) assesses
fibrinolysis and is elevated in thrombotic states but not used for anticoagulation
monitoring.
Question 6: Which clinical finding is most suggestive of cardiac tamponade in a
patient with recent pericarditis?
,A. Pulsus paradoxus >10 mmHg
B. Wide pulse pressure
C. Bounding peripheral pulses
D. Elevated jugular venous pressure with Kussmaul's sign
CORRECT ANSWER: A. Pulsus paradoxus >10 mmHg
Rationale:Cardiac tamponade results from fluid accumulation in the pericardial space,
impairing ventricular filling. Pulsus paradoxus—an inspiratory drop in systolic blood
pressure >10 mmHg—is a hallmark finding due to exaggerated ventricular
interdependence. Wide pulse pressure (B) and bounding pulses (C) suggest aortic
regurgitation; Kussmaul's sign (D) is associated with constrictive pericarditis or right
ventricular infarction.
Question 7: A patient with acute myocardial infarction develops sudden
hypotension, clear lung fields, and elevated jugular venous pressure. Which
complication should the nurse suspect?
A. Left ventricular free wall rupture
B. Right ventricular infarction
C. Papillary muscle rupture
D. Ventricular septal defect
CORRECT ANSWER: B. Right ventricular infarction
Rationale:Right ventricular infarction, often accompanying inferior MI, presents with
hypotension, clear lungs (due to preserved left ventricular function), and elevated JVD
from impaired right ventricular output. This triad is classic for RV infarction. Free wall
rupture (A) causes tamponade and pulseless electrical activity; papillary muscle
rupture (C) leads to acute mitral regurgitation with pulmonary edema; VSD (D) causes a
new holosystolic murmur and biventricular failure.
Question 8: Which statement by a patient with peripheral arterial disease (PAD)
indicates understanding of foot care education?
A. "I will soak my feet in hot water daily to improve circulation."
B. "I will inspect my feet daily for cuts or sores using a mirror."
C. "I can walk barefoot at home since I have good sensation."
D. "I will apply heating pads to my legs if they feel cold."
CORRECT ANSWER: B. "I will inspect my feet daily for cuts or sores using a mirror."
Rationale:Patients with PAD are at high risk for foot ulcers and infections due to
impaired perfusion and neuropathy. Daily foot inspection with a mirror allows early
detection of injuries. Hot water (A), barefoot walking (C), and heating pads (D) risk
thermal injury due to reduced sensation and should be avoided.
Question 9: Which ECG rhythm shows absent P waves, irregularly irregular R-R
intervals, and a ventricular rate of 110 bpm?
, A. Atrial flutter
B. Sinus tachycardia
C. Atrial fibrillation
D. Multifocal atrial tachycardia
CORRECT ANSWER: C. Atrial fibrillation
Rationale:Atrial fibrillation is characterized by disorganized atrial electrical activity,
resulting in absent P waves, an irregularly irregular ventricular response, and variable R-
R intervals. Atrial flutter (A) shows sawtooth flutter waves; sinus tachycardia (B) has
normal P waves preceding each QRS; multifocal atrial tachycardia (D) has ≥3 distinct P-
wave morphologies.
Question 10: A patient with severe aortic stenosis is most likely to report which
symptom during exertion?
A. Palpitations
B. Syncope
C. Hemoptysis
D. Claudication
CORRECT ANSWER: B. Syncope
Rationale:The classic triad of aortic stenosis includes angina, syncope, and heart
failure. Exertional syncope occurs due to inability to increase cardiac output across the
stenotic valve, leading to cerebral hypoperfusion. Palpitations (A) are nonspecific;
hemoptysis (C) suggests mitral stenosis or pulmonary embolism; claudication (D)
indicates peripheral arterial disease.
Question 11: Which laboratory finding is most specific for myocardial injury?
A. Elevated creatine kinase-MB
B. Elevated troponin I
C. Elevated myoglobin
D. Elevated lactate dehydrogenase
CORRECT ANSWER: B. Elevated troponin I
Rationale:Cardiac troponins (I and T) are highly specific to myocardial tissue and
remain elevated for 7–10 days post-injury, making them the gold standard biomarker for
myocardial infarction. CK-MB (A) is less specific (found in skeletal muscle); myoglobin
(C) rises early but lacks cardiac specificity; LDH (D) is nonspecific and rarely used
today.
Question 12: A patient with deep vein thrombosis (DVT) is started on enoxaparin.
Which parameter should the nurse monitor to assess for adverse effects?
A. INR
B. Platelet count
Answers & Detailed Rationales (Updated 2026) | Heart Failure & Coronary Artery
Disease, Hypertension & Shock Management, Dysrhythmias & ECG Interpretation,
Myocardial Infarction & Angina, Cardiac Pharmacology, Hemodynamic Monitoring,
Nursing Interventions, Patient Education & NCLEX-Style Clinical Scenarios
Question 1: A 68-year-old male with a history of hypertension and hyperlipidemia
presents with substernal chest pain radiating to his left arm, occurring with
exertion and relieved by rest. Which pathophysiological process best explains this
presentation?
A. Complete thrombotic occlusion of a coronary artery
B. Transient myocardial ischemia due to fixed coronary stenosis
C. Inflammatory infiltration of the myocardium
D. Rupture of the ventricular free wall
CORRECT ANSWER: B. Transient myocardial ischemia due to fixed coronary
stenosis
Rationale:This patient describes classic stable angina pectoris, which results from a
temporary imbalance between myocardial oxygen supply and demand in the setting of
atherosclerotic coronary artery disease. Fixed stenosis limits coronary blood flow
during increased demand (e.g., exertion), causing reversible ischemia. Complete
occlusion (A) describes acute myocardial infarction; inflammatory infiltration (C)
suggests myocarditis; ventricular rupture (D) is a catastrophic complication of MI, not
stable angina.
Question 2: Which electrocardiogram (ECG) finding is most characteristic of acute
inferior wall myocardial infarction?
A. ST-segment elevation in leads V1–V4
B. ST-segment elevation in leads II, III, and aVF
C. New left bundle branch block
D. T-wave inversion in leads V5–V6
CORRECT ANSWER: B. ST-segment elevation in leads II, III, and aVF
Rationale:The inferior wall of the left ventricle is supplied by the right coronary artery (in
~85% of individuals) or the left circumflex artery. Ischemia or infarction in this region
produces ST-segment elevation in the inferior leads: II, III, and aVF. Anterior wall MI (A)
shows changes in V1–V4; new LBBB (C) may indicate extensive anterior ischemia but is
nonspecific; lateral ischemia (D) involves V5–V6, I, and aVL.
Question 3: A patient with acute decompensated heart failure presents with
orthopnea, bilateral crackles, and an S3 gallop. Which hemodynamic parameter is
most likely elevated?
A. Systemic vascular resistance
B. Pulmonary capillary wedge pressure
,C. Right atrial pressure
D. Cardiac index
CORRECT ANSWER: B. Pulmonary capillary wedge pressure
Rationale:The clinical triad of orthopnea, pulmonary crackles, and S3 gallop indicates
left-sided heart failure with pulmonary venous congestion. Pulmonary capillary wedge
pressure (PCWP), measured via pulmonary artery catheter, reflects left atrial pressure
and is elevated (>18 mmHg) in left ventricular failure. Systemic vascular resistance (A)
may be elevated as a compensatory mechanism but is not the primary abnormality;
right atrial pressure (C) reflects right-sided function; cardiac index (D) is typically
decreased, not elevated.
Question 4: Which medication is contraindicated in a patient with heart failure with
reduced ejection fraction (HFrEF) and symptomatic bradycardia?
A. Lisinopril
B. Metoprolol succinate
C. Furosemide
D. Spironolactone
CORRECT ANSWER: B. Metoprolol succinate
Rationale:Beta-blockers like metoprolol succinate are guideline-directed medical
therapy for HFrEF but are contraindicated in patients with symptomatic bradycardia,
high-grade heart block, or cardiogenic shock due to their negative chronotropic effects.
ACE inhibitors (A), loop diuretics (C), and mineralocorticoid receptor antagonists (D) do
not directly worsen bradycardia and remain appropriate with monitoring.
Question 5: A 72-year-old female with atrial fibrillation is prescribed warfarin.
Which laboratory value must be monitored to assess therapeutic anticoagulation?
A. Platelet count
B. International normalized ratio (INR)
C. Activated partial thromboplastin time (aPTT)
D. D-dimer
CORRECT ANSWER: B. International normalized ratio (INR)
Rationale:Warfarin inhibits vitamin K–dependent clotting factors (II, VII, IX, X), and its
anticoagulant effect is monitored using the INR, with a target range of 2.0–3.0 for most
indications including atrial fibrillation. Platelet count (A) monitors for heparin-induced
thrombocytopenia; aPTT (C) is used for unfractionated heparin; D-dimer (D) assesses
fibrinolysis and is elevated in thrombotic states but not used for anticoagulation
monitoring.
Question 6: Which clinical finding is most suggestive of cardiac tamponade in a
patient with recent pericarditis?
,A. Pulsus paradoxus >10 mmHg
B. Wide pulse pressure
C. Bounding peripheral pulses
D. Elevated jugular venous pressure with Kussmaul's sign
CORRECT ANSWER: A. Pulsus paradoxus >10 mmHg
Rationale:Cardiac tamponade results from fluid accumulation in the pericardial space,
impairing ventricular filling. Pulsus paradoxus—an inspiratory drop in systolic blood
pressure >10 mmHg—is a hallmark finding due to exaggerated ventricular
interdependence. Wide pulse pressure (B) and bounding pulses (C) suggest aortic
regurgitation; Kussmaul's sign (D) is associated with constrictive pericarditis or right
ventricular infarction.
Question 7: A patient with acute myocardial infarction develops sudden
hypotension, clear lung fields, and elevated jugular venous pressure. Which
complication should the nurse suspect?
A. Left ventricular free wall rupture
B. Right ventricular infarction
C. Papillary muscle rupture
D. Ventricular septal defect
CORRECT ANSWER: B. Right ventricular infarction
Rationale:Right ventricular infarction, often accompanying inferior MI, presents with
hypotension, clear lungs (due to preserved left ventricular function), and elevated JVD
from impaired right ventricular output. This triad is classic for RV infarction. Free wall
rupture (A) causes tamponade and pulseless electrical activity; papillary muscle
rupture (C) leads to acute mitral regurgitation with pulmonary edema; VSD (D) causes a
new holosystolic murmur and biventricular failure.
Question 8: Which statement by a patient with peripheral arterial disease (PAD)
indicates understanding of foot care education?
A. "I will soak my feet in hot water daily to improve circulation."
B. "I will inspect my feet daily for cuts or sores using a mirror."
C. "I can walk barefoot at home since I have good sensation."
D. "I will apply heating pads to my legs if they feel cold."
CORRECT ANSWER: B. "I will inspect my feet daily for cuts or sores using a mirror."
Rationale:Patients with PAD are at high risk for foot ulcers and infections due to
impaired perfusion and neuropathy. Daily foot inspection with a mirror allows early
detection of injuries. Hot water (A), barefoot walking (C), and heating pads (D) risk
thermal injury due to reduced sensation and should be avoided.
Question 9: Which ECG rhythm shows absent P waves, irregularly irregular R-R
intervals, and a ventricular rate of 110 bpm?
, A. Atrial flutter
B. Sinus tachycardia
C. Atrial fibrillation
D. Multifocal atrial tachycardia
CORRECT ANSWER: C. Atrial fibrillation
Rationale:Atrial fibrillation is characterized by disorganized atrial electrical activity,
resulting in absent P waves, an irregularly irregular ventricular response, and variable R-
R intervals. Atrial flutter (A) shows sawtooth flutter waves; sinus tachycardia (B) has
normal P waves preceding each QRS; multifocal atrial tachycardia (D) has ≥3 distinct P-
wave morphologies.
Question 10: A patient with severe aortic stenosis is most likely to report which
symptom during exertion?
A. Palpitations
B. Syncope
C. Hemoptysis
D. Claudication
CORRECT ANSWER: B. Syncope
Rationale:The classic triad of aortic stenosis includes angina, syncope, and heart
failure. Exertional syncope occurs due to inability to increase cardiac output across the
stenotic valve, leading to cerebral hypoperfusion. Palpitations (A) are nonspecific;
hemoptysis (C) suggests mitral stenosis or pulmonary embolism; claudication (D)
indicates peripheral arterial disease.
Question 11: Which laboratory finding is most specific for myocardial injury?
A. Elevated creatine kinase-MB
B. Elevated troponin I
C. Elevated myoglobin
D. Elevated lactate dehydrogenase
CORRECT ANSWER: B. Elevated troponin I
Rationale:Cardiac troponins (I and T) are highly specific to myocardial tissue and
remain elevated for 7–10 days post-injury, making them the gold standard biomarker for
myocardial infarction. CK-MB (A) is less specific (found in skeletal muscle); myoglobin
(C) rises early but lacks cardiac specificity; LDH (D) is nonspecific and rarely used
today.
Question 12: A patient with deep vein thrombosis (DVT) is started on enoxaparin.
Which parameter should the nurse monitor to assess for adverse effects?
A. INR
B. Platelet count
