Check responsiveness and call emergency services
Open the airway using head-tilt/chin-lift
Check breathing for no more than 10 seconds
If not breathing or only gasping, start CPR
Place the heel of one hand in the center of the chest on the breastbone
Place the other hand on top and interlock fingers
Keep arms straight and shoulders over hands
Compress the chest hard and fast
Push at a rate of 100–120 compressions per minute
Depth: about 2 inches (5–6 cm)
Allow full chest recoil between compressions
Minimize interruptions
If trained and willing, give 30 compressions then 2 breaths
Seal your mouth over the person’s mouth and breathe for about 1 second to make the chest rise
Give the second breath and then return to compressions
Continue cycles of 30 compressions and 2 breaths until help arrives or the person starts breathing normally
If you are not trained or not willing to give breaths, do hands-only CPR with continuous compressions at 100–120 per minute
If an AED is available, turn it on and follow the voice prompts
Continue CPR immediately after the AED analysis if a shock is not advised or after delivering a shock