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

To relieve choking in an unresponsive infant, first, call for emergency help and then carefully position the infant face down on your forearm, supporting their head and neck. Administer five firm back blows between the infant's shoulder blades using the heel of your hand. If the object is not expelled and the infant remains unresponsive, turn them face up and perform five chest thrusts using two fingers in the center of the chest, repeating the process until help arrives or the infant begins to breathe.