No.
My mom got double brain aneurism. Had her head cut open to put clamps on the leaking arteries.
Slipped into a coma, few days later doctor came in to convince us for prepping her for organ donor, dad said it was too early.
Another few days later doctors came in being really rude that all she was good for was organ donor. Had a heated conversation with my dad who got tired and said “fck off doctors”.
Few days later she woke up. After revalidation she has a healthy life, this was 37yrs ago, she still lives, she is 71.
My dad told my awake mum and since I was underaged opted me out for organ donor. Needles to say, I am reluctant to opt myself back in.
Optional read: aftermath of the aneurism is that the part of the brain to process visual data was damaged. Other parts of her brain took that role but is not as effective. Her depth perception any further that 10m is gone. She has no vertical peripheral processing, so she has to tilt her head up or down to recognize what she noticed i’ her peripheral, one cannot imagine this seeing something but unable to recognize until you point your head at it :) in the end, very good outcome.