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Iatrogenic pneumothorax — RCPSC EM MCQ

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ModerateRespiratory emergenciesIatrogenic pneumothoraxRCPSC EM

A 72-year-old has abrupt dyspnoea and pleuritic pain after central line placement. SpO2 is 88%, BP 104/70, trachea is central, and chest ultrasound shows absent lung sliding on the right. What is the most likely diagnosis?

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Correct answer: B — Iatrogenic pneumothorax

Acute dyspnoea after line placement with absent lung sliding is pneumothorax; haemodynamic stability distinguishes it from tension physiology.

Reference: Canadian emergency ultrasound practice standards