Practice question

What is the standard ratio of chest compressions to rescue breaths when performing cardiopulmonary resuscitation (CPR) on an unresponsive adult casualty?

  1. 5 compressions to 1 breath.
  2. 15 compressions to 2 breaths.
  3. 30 chest compressions to 2 rescue breaths at a compression rate of 100 to 120 per minute.
  4. 50 compressions to 5 breaths.

Answer: C — 30 chest compressions to 2 rescue breaths at a compression rate of 100 to 120 per minute.

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