What is the correct compression ratio and hand usage for adult CPR?

What is the correct compression ratio and hand usage for adult CPR?

• A. 30:2 with two hands
• B. 30:2 with one hand
• C. 15:2 with two hands
• D. 15:2 with one hand

Answer: (A)

During adult CPR the priority is to maintain blood flow with chest compressions while providing breaths at the right balance. The standard cycle is 30 compressions followed by 2 breaths, and these compressions are delivered with two hands placed on the center of the chest (typically the lower half of the sternum) so you can press firmly and use your body weight. This two‑hand method helps achieve the recommended depth of about 5 cm (2 inches) and allows full chest recoil between compressions, which is vital for effective circulation. Using one hand usually doesn’t reach the necessary depth for most adults and can reduce the quality of compressions. The 15:2 ratio is for pediatric cases, not adults, which is why it isn’t used here.

During adult CPR the priority is to maintain blood flow with chest compressions while providing breaths at the right balance. The standard cycle is 30 compressions followed by 2 breaths, and these compressions are delivered with two hands placed on the center of the chest (typically the lower half of the sternum) so you can press firmly and use your body weight. This two‑hand method helps achieve the recommended depth of about 5 cm (2 inches) and allows full chest recoil between compressions, which is vital for effective circulation. Using one hand usually doesn’t reach the necessary depth for most adults and can reduce the quality of compressions. The 15:2 ratio is for pediatric cases, not adults, which is why it isn’t used here.