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CPR Cycle Duration — NDEB AFK MCQ

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ModerateMedical Emergencies in DentistryCPR Cycle DurationNDEB AFK

In a dental emergency, the minimum duration of chest compressions before stopping to check for a pulse should be which of the following?

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

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Correct answer: C — 2 minutes (5 cycles of 30:2)

Current BLS guidelines recommend performing 5 cycles of CPR (30 compressions : 2 breaths per cycle = approximately 2 minutes of CPR) before stopping to reassess the patient's rhythm/pulse. High-quality CPR with minimal interruptions is critical — compressions should be interrupted for no more than 10 seconds at a time. Early defibrillation (AED) takes priority over compression cycles when the AED becomes available.

Reference: Heart and Stroke Foundation of Canada – BLS Guidelines, 2020; AHA – Guidelines for CPR and ECC, 2020