For infants, how many fingers should be used for chest compressions?

For infants, using two fingers is the correct technique for delivering chest compressions. This approach ensures that the compressions are effective while minimizing the risk of injury to the infant's chest. The proper hand positioning involves placing the two fingers just below the nipple line in the center of the chest, allowing for adequate compression depth and allowing the rescuer to apply enough force while maintaining control over the compressions.

Using one finger would not provide sufficient force for effective compressions, while using three or four fingers may lead to a larger surface area on the chest, which could reduce the precision of the compressions and potentially cause injury to the infant's ribcage. The two-finger technique is thus the standard recommended method for performing infant CPR, ensuring that the compressions are both safe and effective.