A nurse observes circumoral cyanosis in an infant who is choking. Which of the following actions should the nurse take?

Choice A reason: Using a bulb syringe for suctioning is not the appropriate intervention for a choking infant. This may not effectively clear the airway obstruction. Choice B reason: Delivering back blows with the infant face down over the rescuer's arm is the recommended action for relieving a choking episode in an infant. This helps to dislodge the obstruction from the airway. Choice C reason: Placing the infant in a side-lying position and performing abdominal thrusts is the intervention for a conscious infant who is choking. This is not the appropriate action for an infant showing circumoral cyanosis. Choice D reason: Performing a head tilt and chin lift followed by giving rescue breaths is the procedure for providing rescue breaths in infant CPR. It is not the initial intervention for a choking infant.