## **Core Concept**
The American Heart Association (AHA) guidelines for cardiopulmonary resuscitation (CPR) emphasize the importance of chest compressions in maintaining blood circulation and increasing the chances of successful resuscitation. The recommended rate of chest compressions is crucial for effective CPR.

## **Why the Correct Answer is Right**
The correct answer, 100-120 compressions per minute, is based on the AHA's recommendation for adult CPR. This rate is believed to optimize cardiac output and increase the likelihood of successful resuscitation. Research has shown that chest compressions performed at this rate help to maintain a consistent blood pressure and improve perfusion of vital organs.

## **Why Each Wrong Option is Incorrect**
* **Option A:** 60-80 compressions per minute - This rate is lower than the recommended rate and may not provide sufficient cardiac output to support vital organs during CPR.
* **Option B:** 80-100 compressions per minute - Although close to the recommended range, this option does not fully encompass the upper limit of the recommended rate.
* **Option D:** 120-140 compressions per minute - This rate exceeds the upper limit of the recommended range and may compromise the effectiveness of compressions by not allowing sufficient time for ventricular filling.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that the quality of chest compressions, including adequate depth (at least 2 inches) and allowing for full chest recoil, is just as important as the rate. Using a metronome or a song with a tempo of 100-120 beats per minute (such as "Stayin' Alive") can help achieve the recommended compression rate.

## **Correct Answer:** C. 100-120 compressions per minute.