ABIM Cardiovascular Disease Practice Exam

Free ABIM Cardiovascular Disease Practice Sample Questions & Answers

Question 1

A 64-year-old man with a history of hypertension and hyperlipidemia presents with exertional chest discomfort that resolves within several minutes of rest. His ECG is normal at rest, and his symptoms have been stable for six months. Which diagnostic approach is MOST appropriate for evaluating suspected stable coronary artery disease?

A. Immediate coronary artery bypass surgery
B. Noninvasive testing based on clinical risk assessment
C. Emergency thrombolytic therapy
D. No further evaluation because the ECG is normal

Correct Answer: B. 

Explanation:
Patients with stable symptoms suggestive of coronary artery disease should undergo evaluation based on their clinical likelihood of disease and overall risk profile. Noninvasive testing, such as stress imaging or coronary CT angiography in appropriate patients, helps identify ischemia and guide further management. A normal resting ECG does not exclude coronary artery disease because many patients have normal findings between episodes. Emergency therapies such as thrombolytics or urgent revascularization are reserved for acute coronary syndromes or high-risk presentations. Proper risk stratification allows physicians to select the most appropriate diagnostic pathway while avoiding unnecessary invasive procedures.

Question 2

A 70-year-old woman with heart failure with reduced ejection fraction (LVEF 30%) is receiving an ACE inhibitor and beta-blocker therapy. Which additional medication has demonstrated a reduction in cardiovascular mortality in appropriate patients?

A. Verapamil
B. Mineralocorticoid receptor antagonist
C. Flecainide
D. Digoxin as first-line therapy

Correct Answer: B. 

Explanation:
Mineralocorticoid receptor antagonists, such as spironolactone and eplerenone, have been shown to reduce mortality and hospitalization in selected patients with heart failure with reduced ejection fraction. These medications are part of guideline-directed medical therapy when renal function and potassium levels allow safe use. Non-dihydropyridine calcium channel blockers such as verapamil may worsen systolic function, and class IC antiarrhythmics are generally avoided in structural heart disease. Digoxin may improve symptoms and reduce hospitalizations in some patients but has not demonstrated the same mortality benefit. Careful monitoring of kidney function and potassium is required with mineralocorticoid receptor antagonist therapy.

Question 3

A 76-year-old patient with atrial fibrillation has hypertension, diabetes, and a previous ischemic stroke. Which management strategy is MOST appropriate for reducing the risk of thromboembolic events?

A. Aspirin therapy alone
B. Oral anticoagulation therapy
C. No treatment because the patient has no symptoms
D. Rate control medication only

Correct Answer: B.

Explanation:
Patients with atrial fibrillation are assessed for stroke risk using clinical factors such as age, hypertension, diabetes, and prior stroke. This patient has multiple high-risk features, making oral anticoagulation the preferred approach unless contraindications exist. Direct oral anticoagulants are commonly used in many patients, while warfarin remains appropriate in selected situations. Rate control may improve symptoms but does not adequately prevent thromboembolic complications. Aspirin alone provides insufficient stroke prevention in high-risk atrial fibrillation. The decision to anticoagulate should balance stroke risk against bleeding risk using validated clinical assessment tools.

Question 4

A patient presents with an acute ST-segment elevation myocardial infarction (STEMI) at a hospital with immediate access to cardiac catheterization. What is the preferred reperfusion strategy when available within the recommended timeframe?

A. Primary percutaneous coronary intervention (PCI)
B. Long-term medical therapy without intervention
C. Elective stress testing after discharge
D. Calcium channel blocker therapy alone

Correct Answer: A. 

Explanation:
Primary PCI is the preferred reperfusion strategy for eligible patients with STEMI when it can be performed promptly by an experienced team. Rapid restoration of coronary blood flow limits myocardial damage and improves outcomes. Treatment decisions depend on timing, availability of facilities, patient factors, and clinical presentation. Thrombolytic therapy may be considered when PCI cannot be performed within an appropriate timeframe. Medical therapy remains an important component of STEMI management but does not replace urgent reperfusion in eligible patients. Early recognition and rapid intervention are critical components of acute coronary syndrome care.

Question 5

A 68-year-old patient with severe aortic stenosis reports exertional dyspnea and episodes of syncope. Which finding most strongly supports intervention?

A. Mild valve thickening without symptoms
B. Symptomatic severe aortic stenosis
C. Normal valve function with occasional palpitations
D. Asymptomatic mild regurgitation

Correct Answer: B. 

Explanation:
Symptoms such as exertional dyspnea, angina, and syncope in patients with severe aortic stenosis indicate advanced disease and increased risk of adverse outcomes. Symptomatic severe aortic stenosis is a major indication for evaluation for valve replacement. Medical therapy cannot reverse the mechanical obstruction caused by a severely narrowed valve. Treatment options may include surgical aortic valve replacement or transcatheter aortic valve replacement depending on patient age, anatomy, surgical risk, and overall health status. Asymptomatic patients with mild valve abnormalities are typically monitored unless other high-risk features are present.

Question 6

A 58-year-old patient develops palpitations and dizziness. ECG demonstrates irregularly irregular rhythm without distinct P waves. Which diagnosis is MOST likely?

A. Atrial fibrillation
B. Atrial flutter with fixed conduction
C. Complete heart block
D. Sinus bradycardia

Correct Answer: A. 

Explanation:
Atrial fibrillation is characterized by chaotic atrial electrical activity resulting in an irregularly irregular ventricular rhythm and absence of organized P waves on ECG. It is one of the most common sustained arrhythmias encountered in clinical practice and increases the risk of stroke due to thrombus formation in the left atrial appendage. Management includes assessment of stroke risk, consideration of anticoagulation, and strategies for rate or rhythm control. Atrial flutter typically demonstrates organized atrial activity with characteristic flutter waves. Complete heart block and sinus bradycardia present with different conduction patterns and heart rhythms.

Question 7

A patient with heart failure presents with worsening shortness of breath, orthopnea, and bilateral lower extremity edema. Which medication is MOST appropriate for immediate symptom relief due to volume overload?

A. Intravenous loop diuretic
B. Long-term statin therapy
C. Beta-blocker initiation during acute decompensation
D. Calcium supplementation

Correct Answer: A. 

Explanation:
Acute decompensated heart failure commonly presents with fluid overload symptoms such as pulmonary congestion, orthopnea, and peripheral edema. Intravenous loop diuretics are used to rapidly reduce excess fluid and improve symptoms. While guideline-directed therapies such as beta-blockers and renin-angiotensin system inhibitors provide long-term benefits, initiation or escalation during acute instability requires careful consideration. Statins and calcium supplementation do not address acute congestion. Management should include assessment of precipitating factors, monitoring of renal function and electrolytes, and adjustment of chronic heart failure therapy after stabilization.

Question 8

A 55-year-old patient has elevated LDL cholesterol and multiple cardiovascular risk factors. Which intervention is MOST effective for reducing future cardiovascular events?

A. High-intensity statin therapy when indicated
B. Vitamin supplements alone
C. Avoiding all dietary fats without medication
D. Treating cholesterol only after symptoms develop

Correct Answer: A. 

Explanation:
Statin therapy is a cornerstone of cardiovascular disease prevention because it lowers LDL cholesterol and reduces the risk of major cardiovascular events in appropriate patients. Treatment decisions are based on overall cardiovascular risk, LDL levels, existing cardiovascular disease, diabetes status, and other clinical factors. Lifestyle modifications remain essential but may not provide sufficient risk reduction alone for high-risk individuals. Vitamins have not demonstrated comparable cardiovascular benefits, and waiting until symptoms occur misses the opportunity for effective prevention. Preventive cardiology emphasizes early risk assessment and evidence-based interventions.

Question 9

A patient with suspected infective endocarditis has fever and a new heart murmur. Which diagnostic test should be obtained to evaluate for cardiac valve infection?

A. Echocardiography
B. Exercise treadmill testing
C. Coronary calcium scoring
D. Pulmonary function testing

Correct Answer: A. 

Explanation:
Echocardiography is essential in evaluating suspected infective endocarditis because it can identify vegetations, valve damage, and complications such as abscess formation. Both transthoracic and transesophageal echocardiography may be used depending on clinical suspicion and image quality. Blood cultures should also be obtained before antibiotic therapy when possible. Exercise testing and coronary calcium scoring evaluate different cardiovascular conditions and are not appropriate diagnostic tools for suspected valve infection. Early diagnosis and treatment of infective endocarditis are important to prevent complications including heart failure, embolic events, and persistent infection.

Question 10

A patient with hypertrophic cardiomyopathy asks about the cause of exertional symptoms. Which mechanism BEST explains the condition?

A. Reduced coronary artery diameter caused by plaque buildup only
B. Abnormal myocardial hypertrophy causing impaired filling and possible outflow obstruction
C. Complete absence of ventricular contraction
D. Destruction of all cardiac valves

Correct Answer: B. 

Explanation:
Hypertrophic cardiomyopathy is characterized by abnormal thickening of the ventricular myocardium, often involving the interventricular septum. This can impair ventricular relaxation and filling while sometimes causing dynamic left ventricular outflow tract obstruction. Patients may experience exertional dyspnea, chest discomfort, syncope, or arrhythmias. Management includes symptom control, risk assessment for sudden cardiac death, and selected interventions when obstruction is significant. Coronary artery disease, valve destruction, and complete loss of ventricular contraction represent different cardiac conditions and do not explain the pathophysiology of hypertrophic cardiomyopathy.