This rate did not differ significantly in ... “The AHA recommends bystander-initiated chest-compression-only CPR for bystander-witnessed adult OHCA,” says Iwami, “but not for children.

If you see a teen or adult collapse, call 911 and push hard ... said hands-only CPR almost triples the chances of survival. The rate of this CPR is about 100 to 120 beats per minute.