What is the recommended chest compression depth for pediatric patients?

• A. Approximately 1/3 the anterior-posterior diameter of the chest, about 5 cm (2 inches) in larger children.
• B. 2 cm.
• C. 6-7 cm in all sizes.
• D. 1/2 chest depth.

Answer: (A)

The main idea is to use a depth that reflects the child’s own chest size rather than a fixed number. For pediatric patients, chest compressions should be about one-third of the chest’s front-to-back diameter. In a larger child this typically translates to around 5 cm (2 inches). This proportional approach helps generate enough blood flow without forcing the chest too deeply, which could cause injury. Depths like 2 cm are usually too shallow to produce adequate perfusion, while options around 6–7 cm or half the chest depth are too deep for many children and increase the risk of injury. So, using roughly one-third of the chest diameter—about 5 cm in larger children—best balances effectiveness and safety.