How deep should chest compressions be performed on adults?

Chest compressions in adult CPR should be performed at a depth of at least 2 inches (5 cm). This depth is important because it is effective in creating sufficient pressure within the chest cavity to promote blood flow to vital organs, particularly the heart and brain. Compressions that are too shallow may not effectively circulate blood, which can significantly decrease the chances of survival in a cardiac arrest situation.

The guidance to compress to this depth is part of the broader CPR recommendations designed to ensure maximum effectiveness in providing life-saving assistance until emergency medical services can take over. It is essential for those performing CPR to ensure they push hard enough to reach this depth while maintaining a rate of 100 to 120 compressions per minute.