Severe AR Surgical Indication — RACP Adult Medicine MCQ
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Correct answer: D — Treat the infarct-related artery only initially and plan staged assessment of non-culprit lesions
Explanation lettering: B = shown as A · A = shown as B · E = shown as D · D = shown as E
E is correct. In myocardial infarction with multivessel disease and cardiogenic shock, index-procedure PCI should be confined to the infarct-related artery; immediate non-culprit PCI increases death and renal-failure risk, with staged revascularisation considered after stabilisation. A contradicts this evidence. B routine balloon-pump support lacks survival benefit and adds bleeding. C physiology is unreliable in shock and does not justify immediate multivessel PCI. D is not indicated after successful culprit PCI without a separate surgical emergency.
Reference: Heart Foundation and CSANZ, Australian clinical guideline for diagnosing and managing acute coronary syndromes 2025: https://www.heartfoundation.org.au/for-professionals/acs-guideline?tab=3