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General Medicine · Cardiology: variant angina
Sample itemA 38-year-old woman who smokes has episodes of central chest pain at rest, usually between 3 and 5 am. During one episode the ECG shows transient ST elevation in the inferior leads that resolves with sublingual nitroglycerin. Coronary angiography shows no fixed obstruction. Which drug class should be avoided or used with caution?
Original practice item, not a recalled exam question. Nothing here is recorded.
The answer and the reasoning
B. Non-selective beta-blockers
This is Prinzmetal variant angina from coronary artery spasm. Treatment is calcium channel blockers and nitrates, plus smoking cessation and avoidance of triggers such as cocaine. Non-selective beta-blockers can leave alpha-mediated coronary vasoconstriction unopposed and aggravate spasm.
Option by option
A. Calcium channel blockers
Calcium channel blockers are first-line, as they relax coronary smooth muscle.
B. Non-selective beta-blockers (correct)
Unopposed alpha stimulation can intensify vasospasm, so non-selective beta-blockers are avoided.
C. Long-acting nitrates
Nitrates relieve and prevent spasm by vasodilatation.
D. Statins
Statins are safe and are used for general vascular risk reduction.
Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.
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