Hi,
My situation sounds very similar to your Dad's A rupture, clipping repair, some complications and about 3 weeks in neuro ICU. I don't remember a whole lot from that time, just bits and pieces. I am told I sometimes said strange things and got family confused as who was who, I even hallucinated sometimes seeing zoo animals in my room. Here's what I know, lots of pain meds are given, Morphine and some other powerful drug I can't recall was given to me through a central line every 2 hours, considering I've never been any where near a drug user it really effected me, but was needed to control the head pain. Your dad has also had trauma to the brain itself through the bleed and the surgical clipping and can cause changes in memory and behavior and in most cases heals itself over time. Your Dad is in very early stages of his recovery and needs lots of rest and time to heal. Be there for him and love him and I pray he makes a full recovery as I did,
Ruthie