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Ventricular fibrillation arrest — DIPIMC MCQ

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HardResuscitationVentricular fibrillation arrestDIPIMCDipIMC

An adult collapses in front of you and is in cardiac arrest. High-quality CPR is in progress and the monitor shows ventricular fibrillation. You are delivering shocks and need to decide on drug therapy.

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

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Correct answer: C — Give adrenaline 1 mg and amiodarone 300 mg after the third shock, continuing chest compressions.

In a shockable rhythm, adrenaline 1 mg and amiodarone 300 mg are given after the third shock, with adrenaline then repeated every three to five minutes and high-quality compressions maintained throughout. Giving adrenaline before defibrillation is the approach used for non-shockable rhythms. Early defibrillation, not early drug therapy, drives survival in ventricular fibrillation.

Reference: Resuscitation Council UK Guidelines (2025)