How deep should chest compressions be during CPR?

The correct depth for chest compressions during CPR is 2 inches. This depth is essential to ensure that enough force is applied to the chest to create adequate blood flow to the vital organs. In the case of adults, compressions should be performed at a depth of at least 2 inches but not exceeding 2.4 inches, as compressions that are too shallow may not effectively circulate blood, and those that are too deep can cause injury.

Providing compressions at this depth allows for proper compression of the heart, which is located behind the breastbone (sternum). This depth ensures that the compression is sufficient to generate circulation without causing excessive pressure that could lead to damage of the ribs or internal organs. Current guidelines emphasize a compression rate of 100 to 120 compressions per minute, paired with this depth, to optimize the chances of survival in a cardiac arrest scenario.

In contrast, the other options, including 1 inch, 1.5 inches, and 2.5 inches, are either inadequate or excessive and do not align with the guidelines set forth by resuscitation organizations. Compressions that do not meet the required depth may result in ineffective resuscitation efforts.