In babies, most cardiac arrests occur from lack of oxygen like from drowning or choking. First aid for choking should be conducted if the baby on your hand has an airway obstruction. CPR should be performed if the reason behind why the baby isn’t breathing is not known. You need to examine the situation. Watch for a response like some kind of movement by stroking the baby. Do not shake him/her. You need to follow the CAB procedure mentioned below for a baby under age 1 if there’s no response. If you are the only rescuer present and did not see the baby collapse, perform CPR (about 5 cycles) for 2 minutes prior to calling 911 and getting the AED. On the contrary, if you see the baby collapse call 911 and get the AED, before beginning CPR. If someone else is present at the scene, have him or her call for help and get the AED while you attend to the baby. Compressions: 1. You need to place the baby on his or her back on a firm, flat surface, su...