My Dad had a catastrophic SAH last August and is currently still in a rehab unit. He wasn't expected to survive but he did. He was in a coma for 3 weeks or so and when he was back with us he had no movement in his limbs at all. Gradually he regained use of his arms and has a little movement in his legs but he is unable to walk or do anything for himself. He did say the very odd word but unfortunately that has stopped.
The one thing he could do, after a period of time, was eat with assistance. He was about to be sent home to be cared or by his wife, with carers visiting daily.
However, over the past couple of weeks he has developed problems swallowing and following tests, we've been told he is deteriorating. He has developed diabetes, has a cyst on his kidney, a damaged lung ( which we think is due to the fact his feeding tube was inserted into his lung a while back) his lymph nodes are weak and he has started to develop Parkinson's disease.
Before this he had a business, more energy than most people half his age and was just starting to semi retire (not an easy thing for him, he loved his work!)