Ellis and Associates Lifeguard Training Practice Exam 2026 - Free Lifeguard Training Practice Questions and Study Guide

Performing chest compressions correctly is crucial in delivering effective cardiopulmonary resuscitation (CPR) to an adult. The recommended rate of 100-120 compressions per minute is based on extensive research which has shown that compressions within this range maximize blood flow to vital organs, particularly the heart and brain, during cardiac arrest. This rate also aligns with guidelines set forth by organizations like the American Heart Association and other health authorities.

Using this correct compression rate ensures that the heart is mechanically stimulated enough to circulate oxygenated blood, which can help maintain the viability of the heart tissues and increase the chances of survival until professional medical help arrives. Performing compressions at a lower rate, such as 60-80 compressions per minute, would not provide sufficient circulation to meet the body's needs during an emergency.

Additionally, performing compressions deeply and quickly without any rhythm is not effective, as the lack of a structured rhythm can lead to inadequate blood flow. Using one hand only would not provide sufficient force and depth needed for effective compressions, which are typically done using both hands placed together in the center of the chest. Thus, maintaining the correct rate with both hands positioned accurately is fundamental to successful CPR outcomes in adults.