What is the proper compression-to-breath ratio in adult CPR?

• A. 15:2
• B. 30:2
• C. 30:1
• D. 20:2

Answer: (B)

The proper compression-to-breath ratio in adult CPR is 30:2. This means that for every 30 chest compressions delivered, 2 rescue breaths should be provided. This ratio is recommended for adult victims because it optimizes the balance between maintaining blood circulation and providing adequate oxygenation. During high-quality CPR, the emphasis is placed on performing compressions at a depth of at least 2 inches at a rate of 100 to 120 compressions per minute, while the rescue breaths should be given after every 30 compressions to minimize interruptions in chest compressions.

The choice of 30:2 is supported by guidelines from major health organizations, including the American Heart Association, which prioritize effective early CPR to improve outcomes in cardiac arrest situations. Regular training and practice of this ratio are essential for those in emergency response roles, ensuring timely and effective care during critical situations.