I was in an ICU for a week after a cardiac arrest. I don't remember much of it other than a lot of hallicunations.

I had family there to advocate for me, but there's no way in hell I would have been able to advocate for myself. I was literally seeing things around me in the ICU room that didn't exist. My family were probably the only ones that realized that that wasn't the real me.

The hallucinations stopped happening as soon as I was moved to a normal patient room for the rest of my recovery, and I have full working memory of that normal patient room.