How learning hands-only CPR can help save lives

Dr. Jennifer Ashton appears live on "GMA" to discuss how learning hands-only CPR can help save a life.
4:07 | 05/30/17

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Transcript for How learning hands-only CPR can help save lives
Back now with that new heart health campaign called hands only cpr and shows the simple steps that could help save a life when someone goes into cardiac arrest and Jesse palmer is here with those very important new details. Good morning, Jesse. You know, growing up we were taught that compression, rescue breaths and chest compressions could help someone suffering cardiac arrest but now experts are saying hands only cpr could be the key. Hands, just two hands, that's all you need to save a life. No one knows that better than these two women. Ashley was saved by her dance partner. I call them my lifesavers. Reporter: And Dorothy was saved by her daughter. I want people to know that cpr is really easy. Reporter: And now a new initiative is trying to empower all of us to jump in and do cpr when needed. Hands only. It's really important for people to realize that mouth-to-mouth is no longer required. The only thing that's required to save someone's life is to do hands only cpr. Reporter: The numbers are staggering. More than 90% of people who suffer out of hospital cardiac arrests will die. 70% of cardiac arrests happen at home. We want to do nothing short of changing the social norm by empowering people with knowing what to do. Reporter: Joining this crusade celebs like Michael J. Fox, Julianne Margulies and Michael Bloomberg all among the famous faces lending their help to #handsonlycpr. Check to see if they're breathing, call 911 and start start chest compressions. It truly is life saving. Reporter: Doctors stress that speed is key. If you see someone who is not breathing and wait for medical help, well, then it's most likely too late. That's why this campaign is about everyone learning to do compressions. Amy. All right, Jesse, let's bring in Dr. Jen Ashton. So explain to us, Jen, why these recommendations changed? It really has to do with statistics. There are about 350,000 out of hospital attacks a year. Survival rate is poor. 90% die. For every one minute of down time without cpr survival rate drops by 10% and studies show cpr saves lives and hands only saves lives so that's the take home message. Why are chest xregs alone enough to save a life. It's two main reason, number one, if you witness someone drop out of a hospital, they actually have enough oxygen in their blood if it's circulated and that's what the chest compressions are doing. The other thing is it's been shown and known that most lay public bystanders when doing the rescue breathing were oftentimes not doing it correctly and there would be a leak around the mouth, air would go into the stomach instead of the lungs so, again, the key is initiating cpr. So for most people, the thought of having to do cpr on someone especially in that traumatic moment when they drop is a terrifying thing. You've performed it many times. What advice would you give people? So, in a hospital setting this is what I would tell my interns at the first code because even in a hospital people are nervous and I would tell them, this person is already technically dead. You cannot hurt them. All you can do is help and that is really important emotionally. Logistically this needs to be driven home. We heard it in the piece. It bears repeating. Activate 911 which means pointing to someone you in the black dress call 911 if you're on a cell phone tell the operator that and then start chest compressions hard and fast, we have the song a lot of people will remember the beat ??? just dance ??? 100 to 120 beats per minute but if you forget the song -- I always heard "Stayin' alive" was one. Any song hard and fast. Learn cpr. If there is a defibrillator there, use it. This should be the spring/summer missive to people. All right. Thank you so much, Dr. Jen. We appreciate it. Coming up a parenting alert after a spike in little league

This transcript has been automatically generated and may not be 100% accurate.

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