What is the ratio for CPR?

What is the ratio for CPR?

• A. 15:2
• B. 30:2
• C. 20:2
• D. 30:3

Answer: (B)

In CPR the ratio tells you how many chest compressions to do before giving breaths. For an adult when you are the single rescuer, the standard cycle is 30 chest compressions followed by 2 rescue breaths. This pattern keeps blood flowing to the brain and heart while still delivering enough air to oxygenate the blood, and it minimizes the pauses between interruptions for breaths. You keep repeating this 30:2 cycle, aiming for a rate of about 100–120 compressions per minute. Context helps: in some pediatric or two-rescuer scenarios, the ratio can be different (for example, 15 compressions to 2 breaths), but for typical adult single-rescuer CPR, 30:2 is the recognized guideline. The other options don’t match the common cycle used in that scenario.

In CPR the ratio tells you how many chest compressions to do before giving breaths. For an adult when you are the single rescuer, the standard cycle is 30 chest compressions followed by 2 rescue breaths. This pattern keeps blood flowing to the brain and heart while still delivering enough air to oxygenate the blood, and it minimizes the pauses between interruptions for breaths. You keep repeating this 30:2 cycle, aiming for a rate of about 100–120 compressions per minute.

Context helps: in some pediatric or two-rescuer scenarios, the ratio can be different (for example, 15 compressions to 2 breaths), but for typical adult single-rescuer CPR, 30:2 is the recognized guideline. The other options don’t match the common cycle used in that scenario.