@Annna41
I’m very surprised you don’t regularly experience confusion and delirium in ICU patients as it’s known to be very common as a result of the medications and the illness.
I’m assuming you don’t see any acquired brain injuries, significant strokes, delirium, hypoxic patients, those who have pre existing mental health needs and prisoners who may have challenging behaviour etc.
I’ve spent a lot of time in hospitals on a personal and professional level. There are huge challenges for staff to manage individual’s behaviours and complex social care needs and it’s not limited to those who have LD or ASD. It’s clearly a tough job.