As an expert in emergency medical response, I can provide you with guidance on when to administer CPR. CPR, or cardiopulmonary resuscitation, is a life-saving technique used when someone's breathing or heartbeat has stopped. It's crucial to begin CPR when you encounter someone who is unresponsive and not breathing normally, which means no normal breathing or only occasional gasps. Here are the steps to determine if CPR is necessary: 1. Assess the situation for safety and call emergency services immediately. 2. Check responsiveness by tapping the person's shoulder and asking loudly, "Are you okay?" 3. Look for normal breathing. If they are not breathing or only making occasional gasps, begin CPR. 4. Start chest compressions. Push hard and fast in the center of the chest at a rate of 100 to 120 compressions per minute. 5. Open the airway after 30 compressions by using the head-tilt, chin-lift maneuver if you're trained to do so. Remember, the key is to act quickly because brain damage can occur in as little as four to six minutes without oxygen. read more >>

Airway: Open the airway. If you're trained in CPR and you've performed 30 chest compressions, open the person's airway using the head-tilt, chin-lift maneuver. Put your palm on the person's forehead and gently tilt the head back.read more >>