In CPR, how many compressions are given before delivering 2 breaths in an adult 1-rescuer sequence?

In CPR, how many compressions are given before delivering 2 breaths in an adult 1-rescuer sequence?

• A. 15 compressions to 2 breaths
• B. 30 compressions to 2 breaths
• C. 60 compressions to 2 breaths
• D. 50 compressions to 5 breaths

Answer: (B)

In adult CPR performed by a single rescuer, the recommended cycle is 30 chest compressions followed by 2 rescue breaths, then repeat. This 30:2 rhythm balances keeping blood flowing with providing oxygen, aiming for a compression rate of about 100–120 per minute and a depth of roughly 2 inches (5 cm) in adults. After delivering the 2 breaths, resume compressions promptly to maintain perfusion. If another rescuer is present, the pattern shifts to a shorter compression sequence before breaths, but with one rescuer the standard approach is 30 compressions before giving breaths.

In adult CPR performed by a single rescuer, the recommended cycle is 30 chest compressions followed by 2 rescue breaths, then repeat. This 30:2 rhythm balances keeping blood flowing with providing oxygen, aiming for a compression rate of about 100–120 per minute and a depth of roughly 2 inches (5 cm) in adults. After delivering the 2 breaths, resume compressions promptly to maintain perfusion.

If another rescuer is present, the pattern shifts to a shorter compression sequence before breaths, but with one rescuer the standard approach is 30 compressions before giving breaths.