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

Choice A rationaleDelivering back blows with the infant face down over the rescuer's arm is the appropriate first aid response to an infant choking. This method uses gravity and force to help dislodge the object from the infant's airway, providing a swift and effective means to clear the obstruction and prevent further complications from lack of oxygen.Choice B rationaleMoving the infant into an upright position and suctioning the airway with a bulb syringe is not suitable for an acute choking situation. Suctioning is more appropriate for clearing mucus or fluids, not solid objects blocking the airway, and it could delay necessary intervention.Choice C rationalePerforming a head tilt and a chin lift with rescue breaths is typically used in CPR for unresponsive infants, not choking. Administering rescue breaths on a choking infant may force the object further into the airway, worsening the blockage.Choice D rationalePlacing the infant in a side-lying position and performing abdominal thrusts is not recommended for infants under one year old. Abdominal thrusts can cause injury to the internal organs. The appropriate technique is back blows and chest thrusts for infants.