skip to main content

Acute mesenteric ischemia — RCPSC EM MCQ

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

HardGI/Abdominal emergenciesAcute mesenteric ischemiaRCPSC EM

CTAS 2. A 76-year-old with atrial fibrillation has sudden severe abdominal pain. Exam shows mild diffuse tenderness without peritonism. Lactate is 5.4 mmol/L, WBC 18, and venous blood gas shows metabolic acidosis. Pain is out of proportion to findings. What is the most likely diagnosis?

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

Reveal the answer and explanation

Correct answer: D — Acute mesenteric ischemia

Severe pain out of proportion, embolic risk, lactic acidosis, and limited early abdominal signs suggest acute mesenteric ischemia.

Reference: Canadian Association of General Surgeons acute abdomen resources; Tintinalli's Emergency Medicine