The same thing happened to my husband, sort of. In the late 70's, he was in a car accident. He was in the hospital, in a coma for 3 months, He woke up and they said they didn't expect him to live,. He flat lined and he could see his body on the table and the doctor's working on him. He said he went into a tunnel and saw a bright light, he saw angels. They declared him dead.
He was later moved to the morgue, and he heard someone come in. My husband said "I am cold".
[You're not in a hospital anymore, you're in a morgue.]
Whoever the worker was I sure was shocked, At the hospital they have a death book of all who had died, his name is in it. Miracles happen all the think " thank you Jesus"