Earl don't expect too much too soon. It takes a while to overcome open heart surgery. Besides the bout of pneumonia. It wasn't anything you necessarily did that brought it on. Stress and the way we eat can help cause it. Getting older might have something to do with it also. Take Care Bettye Vann Knight
A similiar thing happened to me in 87, they gave me 1-3 hours to live but a much better doctor had other plans for me. Don't push yourself but I wish a speedy reovery to you. Gary Hawley