skip to main content

Acute limb ischaemia — RCPSC EM MCQ

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

HardCardiovascular emergenciesAcute limb ischaemiaRCPSC EM

A 77-year-old with untreated atrial fibrillation develops sudden left leg pain. The limb is pale and cool with absent Doppler signals, paraesthesia, and weak ankle dorsiflexion. Lactate is 3.8 mmol/L and creatinine is normal. What is the most appropriate next step?

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

Reveal the answer and explanation

Correct answer: B — Start IV unfractionated heparin and call vascular surgery urgently

Start IV unfractionated heparin and call vascular surgery urgently is correct: the clues indicate Acute limb ischaemia and this option addresses the immediate ED priority. The distractors delay care, target a less likely problem, or are unsafe in this physiology.

Reference: Canadian vascular emergency practice; Rosen's Emergency Medicine