How deep should chest compressions be during CPR?

Chest compressions during CPR should be performed to a depth of at least 5 cm (approximately 2 inches) in adults. This depth is essential to effectively circulate blood to vital organs, particularly the brain and heart. Research has shown that compressions that are too shallow can significantly decrease the chances of survival in cardiac arrest situations. The recommendation for 5 cm is based on providing enough force to overcome chest wall resistance while minimizing the risk of injury.

Maintaining this depth is crucial throughout the CPR process, ensuring that each compression is firm and delivered at a rate of 100 to 120 compressions per minute. This helps ensure effective and consistent blood flow. The depth of 5 cm strikes a balance between being adequate to generate blood flow and being safe, avoiding excessive depth that could lead to injuries.

By adhering to these guidelines, responders can maximize the chances of returning spontaneous circulation until advanced medical help arrives.