What is the recommended rate of chest compressions per minute during hands-only CPR?

• A. 60-80 per minute.
• B. 150-180 per minute.
• C. 100-120 per minute.
• D. 30-50 per minute.

Answer: (C)

The main idea is that chest compressions must be delivered at a steady, workable pace to push blood effectively with each squeeze. For hands-only CPR in adults, the recommended rate is about 100 to 120 compressions per minute. This tempo strikes a balance: it’s fast enough to maintain continuous blood flow, but not so fast that you can’t compress deeply or allow the chest to fully recoil between compressions. If you go too slow, perfusion drops and organs don’t get enough oxygen; if you go too fast, you risk shallower compressions and incomplete recoil, which also reduces blood flow. The 100–120 per minute range is the guideline-supported pace that keeps blood moving while you maintain proper technique. A metronome or a familiar rhythm can help you keep this pace consistently.