Title: Doctors and Medical Miracles: Dr. Bill O'Callahan on CNN

" This -- we've been bringing is incredible stories about life after death people who by all measures were clinically dead sometimes for hours yet remarkably were brought back to life. Chief medical correspondent doctor Sanjay Gupta explains how they escaped death in his new book cheating death the doctors and medical miracles that are saving lives against all lives. I hear from sons in a moment but first meet a woman who told undo what it was like to die what she saw what she felt. -- is now convinced there is an afterlife."

" I paid. I don't know -- poor Garrity die. Six months ago did her vital signs flat. Doctor bill Callahan she had no pulse. She had no blood pressure and she wasn't breathing on her. I think most layman what would describe that as being dead."

" Garrity isn't grandmother she's also a school bus driver one -- it was totally himself high school in Newton Massachusetts. -- women this."

" He -- right every -- Entering the great tennis and then -- hello."

" The school nurse -- CPR instructor yeah rushed over with the."

" The next thirty seconds went fast. Garrity felt we should couldn't catch your breath and unlike that."

" She was unconscious -- right out of -- it's just everybody let's hear it and I just."

" Yeah."

" It's. Your money for the people working you know I lose hold because."

" Palin -- eighteen man."

" Very. It's okay. I remember. I'm trying to reach out instantly access. Then they have loaded okay. Yeah. Massive."

" It's powerful and very powerful and."

" When -- was happening. I'm -- I can make and I. There's just flashed --"

" This is the emergency room and Newton Wellesley hospital yeah doctor bill Callahan."

" She was brought in yeah shocker a dozen more -- it's still nothing. We've got to the -- the nearly hour mark where I actions."

" And all it's. True. It's rewarding and then you're gonna happen it's. Off."

" You can't back up very third -- you can believe that. Incredibly after 57 minutes 57. Minutes more Garrity was brought back from the dead. Even more amazing. She has no brain damage but what he saw during her near death experience. Still haunts her. Doctor Kevin Nelson is a neurologist from Louisville believes a near death experience is what he calls a week."

" dreams. And we know that the visual system is robustly after. -- dreaming and this accounts for all the license -- There's a couple of a lot of people describe the final can be -- fraud. By the --"

" So when the Redmond doesn't get enough blood to your vision goes dark from the edges toward the manner. Looks like a top. I'm -- Garrity insists what she felt it was real -- not a dream."

" I know I went. And myself I know listed third place. And now here."