If there's a pulse, continue with rescue breathing. Continue this sequence, checking for a response every few minutes. An adult who is unresponsive may have suffered a heart attack and may need advanced cardiac life support. Therefore, if an adult is unresponsive, immediately call 911. If an infant or child is unresponsive, however, CPR should be performed for 1 minute before calling 911.
Respiratory arrest is the most common cause of cardiac arrest in infants and children.
Children who stop breathing may very likely have something obstructing their airway. If an infant is able to cough or cry, do not interfere with their attempt to expel the object. If he or she is unable to cry or cough, deliver up to five back blows, followed by 5 chest thrusts over the lower half of the sternum, using two fingers positioned one finger width below an imaginary line drawn through the nipples. Only finger sweep if you see the object. Repeat the sequence.