Transcript for Texas Girl, 12, Saves Dad's Life With CPR
Twelve year old -- DeMarco want to get work -- -- babysitters so she took an infant CPR class that turned out to be the best decision of her life. And -- -- rewind to Valentine's Day earlier this year. Michael DiMarco is exercising on a stationary bike at home with forty year old daughter Addison plane in the -- -- is just about ready to leave for school when her father calls her name. I was like he's probably asking -- north out of some -- like I really don't wanna go to -- -- like. Ways that -- is -- really weird. -- returned to find her dad passed out on the floor. He had suffered what doctors later called sudden cardiac death. Some kind of death is a term that means that the heart is no longer mechanically functioning properly was not able to pump blood to meet the body's needs. But thanks to that -- CPR class -- -- just what to do. She called 911. And administered CPR until the ambulance came I was waiting for somebody -- -- say it's a joke. I was -- your baby sitting you know Michael DeMarco was in a coma for a week and when he awoke he was -- surprised to hear crew at saint does life. When I came out of the home dollars and home for a week when -- came out of a coma and they told me I've asked several times late you know. What went on what happens if I walked out like ten minutes before he'd be stuck there for my -- obsessed -- and be horrible it. I probably wouldn't happen today I wouldn't happen today and -- -- if you really good that I actually did something like that.
This transcript has been automatically generated and may not be 100% accurate.