What action do you perform to relieve choking in an unresponsive infant?

To relieve choking in an unresponsive infant, first, gently tap the infant's back while holding them face down on your forearm, giving up to five firm back blows between the shoulder blades. If the infant remains unresponsive, carefully turn them over and perform five chest thrusts using two fingers in the center of the chest, just below the nipple line. If the infant does not respond, call emergency services and continue alternating between back blows and chest thrusts until help arrives or the infant begins to breathe.