What is the number of chest compressions to be applied during CPR?

The correct answer, which indicates that 30 chest compressions should be administered during CPR, aligns with established cardiopulmonary resuscitation guidelines. The goal of CPR is to maintain circulation and oxygenation of vital organs until emergency medical services can take over. In adult CPR, the recommended compression-to-ventilation ratio is 30 compressions followed by 2 rescue breaths. This sequence ensures that blood flow is quickly restored through effective compressions, which are performed at a rate of about 100 to 120 compressions per minute.

This guideline emerged from numerous studies emphasizing the importance of high-quality chest compressions to increase the chances of survival following cardiac arrest. It is critical to provide consistent and effective chest compressions because they are the primary mechanism for generating blood pressure and delivering oxygen to the brain and other vital organs during an emergency situation.