[Roccus]

Mom started acting and speaking irrationally during a stint in an ICU. Drs said it was ICU psychosis due to isolation. My sister, also an RN, thought it may have been a stroke. After getting her out of that hospital and away from those Drs, we found out my sister was right. Mom was subsequently diagnosed with onset Alzheimer's.

[carmenbmw]

I hope that your Mom is better! :-)
I am aware of the ICU impairment thing, I wonder if it has to do sometimes with sleep impairment being a contributing factor. (?????)
The post op depression can be a different or complicating issue.
Geez, do I need to just go write a medical book? Sorry for being so boring....