skip to main content

Post-ROSC hypoxaemia — DipIMC MCQ

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

ModerateResuscitationPost-ROSC hypoxaemiaDipIMC

A 70-year-old man has ROSC after out-of-hospital VF arrest. He remains unconscious, has SpO2 100% on high-flow oxygen, systolic blood pressure 92 mmHg and end-tidal CO2 7.2 kPa during assisted ventilation. What is the most appropriate immediate action?

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

Reveal the answer and explanation

Correct answer: D — Ventilate to normocapnia and titrate oxygen to SpO2 94-98%

Post-ROSC care aims for adequate oxygenation without hyperoxaemia and ventilation toward normocapnia. Persistent SpO2 100% on high-flow oxygen suggests oxygen should be titrated if reliable monitoring is available. Hyperventilation can reduce cerebral blood flow and worsen neurological injury.

Reference: Resuscitation Council UK Post-resuscitation care 2025