Happen to my sister
First time she walked into hospital went into cardiac arrest 2 times by the 4th day they were pulling the tubes and taking her off of everything.She breath on her own.
2nd time she fell over dead-this was 4 years later.They brought her back.Rushed to see her-no brain activity-she was dead.We waited for the machines to stop with the Chaplin and she went to God.
I am sorry for your loss.