Oxygen after ROSC — DipIMC MCQ

Correct answer: B — Titrate oxygen to avoid both hypoxia and hyperoxia

Explanation lettering: D = shown as A · E = shown as B · B = shown as C · A = shown as D · C = shown as E

E is correct: Post-ROSC oxygen should be titrated because sustained hyperoxia may be harmful while hypoxia is also dangerous. A is less suitable because it moves the patient before the decisive threat or destination issue is addressed; B is less suitable because it does not address the discriminator in the vignette; C is less suitable because the vignette contains high-risk features that require escalation; D is less suitable because it does not address the discriminator in the vignette. The most tempting alternative is therefore suboptimal because it either delays the time-critical pre-hospital intervention or sends the patient to the wrong level of care. The key DipIMC principle is focused cABCDE decision-making with early pre-alert, triage or retrieval escalation when the scene physiology demands it.

Reference: Resuscitation Council UK Guidelines 2025; JRCALC Guidelines