American Red Cross Basic Life Support (BLS) Provider Practice Test

When performing chest thrusts on an infant who has an obstructed airway, the depth of compression should be around 1½ inches. This depth is crucial because it ensures that enough force is applied to create a pressure differential that can effectively expel an object causing the obstruction. Infants have a different physiological structure compared to older children and adults; thus, it is vital to apply appropriate depth without exceeding safety limits for their developing bodies. The guidelines emphasize that the thrusts need to be firm and effective while also ensuring the infant's safety and minimizing the risk of injury. Too shallow a depth might not generate sufficient pressure to dislodge the obstruction, while excessive force could lead to damage to the infant's fragile chest wall. Therefore, performing chest thrusts at a depth of 1½ inches strikes the right balance between effectiveness and safety in managing a life-threatening airway obstruction in infants.