CPR Compression Ratio — NDEB AFK MCQ
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Correct answer: B — 30:2
The current adult CPR compression-to-ventilation ratio for single-rescuer BLS is 30 compressions to 2 ventilations (30:2). Compressions should be performed at a rate of 100-120 per minute, at a depth of 5-6 cm, with full chest recoil between compressions. For two-rescuer CPR on adults, the ratio remains 30:2. For two-rescuer CPR on children/infants, the ratio is 15:2. Hands-only (compression-only) CPR is acceptable for bystanders who are untrained or unwilling to provide ventilations.
Reference: Heart and Stroke Foundation of Canada – BLS Guidelines, 2020