Tap the person's shoulder and shout, "Are you OK?"
Look for normal breathing. Call 911 if there is no response.
Start Hands-Only CPR.
Hands-Only CPR should not be used for adults whose cardiac arrest is due to drug overdose, near-drowning, or an unwitnessed cardiac arrest. In these cases, do a conventional CPR combination of chest compressions and rescue breathing.
2. Do Chest Compressions
Place the heel of your hand on the center of the person's chest.
Place the heel of your other hand on top of your first hand, lacing fingers together.
Keep arms straight and your shoulders directly over your hands.
Push hard and fast, compressing chest at least 2 inches.
Let chest rise completely before pushing down again.
