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Massive pulmonary embolism — RCPSC EM MCQ

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HardCardiovascular emergenciesMassive pulmonary embolismRCPSC EM

A 41-year-old 2 weeks postpartum collapses with pleuritic chest pain and severe dyspnoea. BP is 74/42 mmHg despite fluids, HR 136/min, oxygen saturation 86% on a non-rebreather. Bedside echo shows a dilated right ventricle; CT is not immediately possible. What is the most likely diagnosis?

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

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Correct answer: E — Massive pulmonary embolism

Massive pulmonary embolism is correct: the clues indicate Massive pulmonary embolism and this option addresses the immediate ED priority. The distractors delay care, target a less likely problem, or are unsafe in this physiology.

Reference: CHEST/ACLS principles; Canadian ED PE practice