How often should CPR compressions be delivered in a minute?

The correct answer is based on the established guidelines for high-quality cardiopulmonary resuscitation (CPR), which recommend delivering chest compressions at a rate of 100 to 120 compressions per minute. This range is crucial for maintaining adequate blood circulation during cardiac arrest, as it ensures that sufficient blood flow is delivered to vital organs, especially the brain and heart.

Compressions should be performed at this rate to maximize the chances of survival and improve outcomes following a cardiac arrest. The guidelines emphasize not only the speed of compressions but also the depth and allowing complete chest recoil between compressions, all of which contribute to effective CPR.

In contrast, other options suggest rates that fall below or above this recommended range, which could potentially reduce the effectiveness of resuscitation efforts. Therefore, maintaining a compression rate within the correct range is vital for the effectiveness of CPR in emergency situations.