Our lovely intelligent kind daughter had a stroke about 3/4 years ago, I still have the e-mail my son in law sent to all who knew her - written in the early hours of the first day, after we had left her in the care of the hospital staff, the next day she was totally not with us, and we were all so convinced we would have to look after her for the rest of her life. The following day she was sitting up in bed, and has not looked back since, returned to her old job, but taking it very easy. She was of course younger than your dad, but I regularly check the e-mail my son in law composed on that night of worry, just to remind me how awful it was, so I know how you must feel. Good luck to you and your dad, and find out as much as you can about strokes and how to cope, it helps.