skip to main content

PEA arrest monitoring — DipIMC MCQ

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

ModerateResuscitationPEA arrest monitoringDipIMC

A 68-year-old man collapses in a GP surgery. CPR is in progress, the first rhythm is PEA at 40 bpm, and capnography during compressions shows persistently very low end-tidal CO2. What is the most appropriate management?

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

Reveal the answer and explanation

Correct answer: A — Improve compression quality and search for reversible causes while continuing ALS

Low end-tidal CO2 during CPR can indicate poor compression quality, low pulmonary blood flow or prolonged arrest, but it should prompt optimisation and review of reversible causes rather than immediate cessation by itself. PEA is not a shockable rhythm. Adenosine has no role in bradycardic PEA arrest. The pearl is that capnography is a quality and trend tool during arrest.

Reference: Resuscitation Council UK Adult ALS Guidelines 2025