skip to main content

Chronic thromboembolic pulmonary hypertension — RCPSC IM MCQ

Instant feedback + full explanation. One question, done properly.

ModerateCardiologyChronic thromboembolic pulmonary hypertensionRCPSC IM

A 57-year-old man with untreated sleep apnoea develops exertional dyspnoea and ankle swelling. Echocardiography shows right ventricular enlargement, estimated pulmonary artery systolic pressure 62 mm Hg, and normal left ventricular systolic function. CT pulmonary angiography is negative. Pulmonary function tests are near normal, and V/Q scan shows multiple mismatched segmental defects. What is the most likely diagnosis?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: C — Chronic thromboembolic pulmonary hypertension

Pulmonary hypertension with mismatched perfusion defects on V/Q scanning after a negative CT pulmonary angiogram is characteristic of chronic thromboembolic pulmonary hypertension.

Reference: Canadian pulmonary hypertension practice guidance