Follow up

Yesterday I posted about prognosis for my dad, who is experiencing sepsis-related encephalopathy. His physical recovery in many ways was very good, but day 4 off the vent and his mental status is so terrible. It went from “pretty bad” (confused, agitated, nonsensical) to “absolutely psychotic” in the span of one day. He is hallucinating, having paranoid delusional and physically so “agitated” they have had to call hospital security more than one time (traumatizing to all). Has anyone else experienced or seen symptoms like this?