American Red Cross BLS Practice Test 2026 – Complete Exam Prep

During CPR for infants, the appropriate depth for chest compressions is about 1.5 inches (4 cm). This depth is essential because it allows for effective compression of the heart and enables blood to circulate adequately during resuscitation efforts.

The guideline of 1.5 inches is based on the infant's smaller chest size and the need to compress the chest adequately without causing injury. Compressions should also be performed at a rate of 100-120 compressions per minute, allowing for sufficient blood flow to vital organs while ensuring the compressions are not too shallow or too deep.

Using too shallow a compression depth may not create enough pressure to circulate blood effectively, which can hinder resuscitation efforts, while compressions that are too deep, beyond the recommended depth, can lead to trauma or injury to the infant's fragile ribcage and internal organs. Hence, understanding the correct depth for infant CPR is crucial for providing effective life-saving measures.