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ACS aspirin — DipIMC MCQ

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HardMedical EmergenciesACS aspirinDipIMC

A patient with STEMI has received aspirin, has no pulmonary oedema and remains comfortable with oxygen saturation 96% on air. Which oxygen strategy is appropriate during direct transfer for reperfusion?

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Correct answer: E — Monitor saturation and add oxygen if hypoxaemia develops

The best answer is “Monitor saturation and add oxygen if hypoxaemia develops”. Routine supplemental oxygen is not indicated in a normoxaemic patient with acute coronary syndrome. Continue monitoring and treat hypoxaemia or another respiratory indication if it develops, without delaying reperfusion. Oxygen is not an analgesic and achieving 100% saturation is not a treatment target. This distinct decision prevents unnecessary hyperoxia while preserving focus on the time-critical reperfusion pathway.

Reference: NICE CG95, Recent-onset chest pain: https://www.nice.org.uk/guidance/cg95/chapter/recommendations