ABIM Cardiology

Question 1

A 62-year-old man presents with crushing chest pain radiating to his left arm. ECG shows ST elevation in leads II, III, and aVF. Which coronary artery is most likely occluded?

Accepted Answer

Right coronary artery

Answer

Left anterior descending artery

Answer

Left circumflex artery

Answer

Left main coronary artery

Question 2

A patient with heart failure has an ejection fraction of 35%. Which medication class has been shown to reduce mortality in this population?

Accepted Answer

Beta-blockers

Answer

Calcium channel blockers

Answer

Short-acting nitrates

Answer

Loop diuretics

Question 3

A 55-year-old woman presents with palpitations. ECG shows absent P waves and irregularly irregular rhythm. What is the most appropriate initial anticoagulation strategy if she has a CHA₂DS₂-VASc score of 3?

Accepted Answer

Oral anticoagulation with a DOAC

Answer

No anticoagulation needed

Answer

Aspirin alone

Answer

Heparin infusion only

Question 4

Which finding on echocardiography is most consistent with cardiac tamponade?

Accepted Answer

Right ventricular diastolic collapse

Answer

Left ventricular hypertrophy

Answer

Mitral valve prolapse

Answer

Aortic stenosis with reduced gradient

Question 5

A patient with hypertrophic obstructive cardiomyopathy (HOCM) experiences syncope during exercise. Which medication is contraindicated?

Accepted Answer

Nitroglycerin

Answer

Metoprolol

Answer

Verapamil

Answer

Disopyramide

Question 6

A 70-year-old man has a resting heart rate of 48 bpm and an ECG showing PR interval of 280 ms with all P waves followed by QRS complexes. What is the diagnosis?

Accepted Answer

First-degree AV block

Answer

Second-degree AV block Mobitz I

Answer

Second-degree AV block Mobitz II

Answer

Complete heart block