Cardiology MCQs

Medicine · 5 free questions with answers & explanations.

1. A 58-year-old man with longstanding hypertension presents with sudden-onset tearing chest pain radiating to the back. His blood pressure is 180/100 mmHg in the right arm and 150/90 mmHg in the left arm. Chest X-ray shows widening of the mediastinum. Which of the following is the MOST appropriate next investigation?
2. A 45-year-old woman with rheumatic heart disease presents with progressive exertional dyspnea. Auscultation reveals an opening snap followed by a low-pitched rumbling diastolic murmur best heard at the apex with the patient in the left lateral decubitus position. The shorter the interval between S2 and the opening snap, the more likely the mitral valve area is:
3. A 68-year-old man with a history of anterior STEMI 3 years ago now presents with fatigue and dyspnea. An ECG shows LBBB. Echocardiography reveals an ejection fraction of 28% with dilated left ventricle. He is already on optimally titrated ACE inhibitor and beta-blocker. Which additional therapy has been shown to reduce all-cause mortality in this patient?
4. A 72-year-old woman is found to have atrial fibrillation on a routine ECG. She has hypertension and type 2 diabetes mellitus but no history of stroke or TIA. She has no heart failure and her echocardiogram shows preserved systolic function. According to the CHA₂DS₂-VASc score, what is her score and what is the appropriate management?
5. A 55-year-old man presents with chest pain at rest. ECG during pain shows transient ST-segment elevation in leads V1–V4 that resolves completely when the pain stops. Troponin levels are normal on two sets taken 6 hours apart. He is a smoker but has no other conventional risk factors. Coronary angiography reveals no obstructive coronary artery disease. What is the MOST likely diagnosis?