when giving chest compressions to an adult, what is the correct compression depth to use?

The correct chest compression depth to use when giving chest compressions to an adult is at least 2 inches (5 centimeters) but no more than 2.4 inches (6 centimeters). This depth is recommended to effectively pump blood through the heart while minimizing the risk of injury such as broken ribs. Compressions should be performed in the center of the chest at a rate of 100 to 120 compressions per minute, allowing the chest to fully recoil after each compression.