My grandmother who is 70, had bypass surgery on tuesday morning, and when we visited her today late thursday night ,she was seeing people , and saying the weirdest things !! I thought it was her pain medication and the nurse said she hasnt recieved any pain medication for several hours.. Is this normal? She has had a ishemic attack in the past, and is a smoker , but no other major problems. Im just worried she isnt going to return back to her orignal mind state.