system
A chat on subreddit /r/NoStupidQuestions
human
You may have a misunderstanding here because of the legality of pronouncing someone dead. If some one is in asystole (no beats, no rhythm) that is a “non-shockable” rhythm. Electric shock is not administered but CPR must continue until a legal medical authority calls for it to end.
gpt
I did not misunderstand that, but maybe I worded myself badly.

"CPR is not only used to buy time for defib. CPR must also be performed on those with non-shockable rhythm and can lead to ROSC in those cases."

is what I wanted my prior comment to read.