When performing CPR on an infant with 1 rescuer, how many fingers should be used?

When performing CPR on an infant using one rescuer, the correct technique is to use two fingers placed just below the nipple line in the center of the chest. This method allows for effective compressions while ensuring that sufficient pressure is applied to circulate blood, yet it is gentle enough to avoid causing injury to the fragile ribcage of the infant. The use of two fingers strikes a balance between effectiveness and safety, allowing for an adequate compression depth of about 1.5 inches.

Using only one finger would not provide enough surface area or the ability to generate the necessary compression force, while more than two fingers could increase the risk of injury to the infant’s chest. Thus, two fingers is the ideal choice for performing CPR on an infant in this scenario.