CPR Compression Depth — NDEB AFK MCQ
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Correct answer: A — At least 5 cm but not more than 6 cm
Current BLS guidelines recommend chest compressions at a depth of at least 5 cm (2 inches) but not exceeding 6 cm (2.4 inches) for adult CPR. Inadequate depth reduces coronary and cerebral perfusion pressure; excessive depth increases the risk of rib fractures and internal organ injury. Complete chest recoil between compressions is essential (do not lean on the chest between compressions). Compression rate should be 100-120 per minute.
Reference: Heart and Stroke Foundation of Canada – BLS Guidelines, 2020; AHA – Guidelines for CPR and ECC, 2020