I just got done watching Dopesick (about Oxycontin) which is essential viewing btw...

It made me look in my cupboard because I remember being given opiates after the rebuild of my ankle with a titanium insert. I found that I'd been given 20x5mg of Oxycodone which is functionally the same but without the slow release feature. I took only 11 pills out of the 20 I was given because I know that stuff is bad news and switched myself to over the counter pills.

Anyone in ICU is probably going to receive something that messes with their head in a significant way...

I just looked at that study! 100% mechanical ventilation!!! That means complete sedation for days!!! I can't imagine anyone being impaired 5.5 days after surviving that.