I have two prosthetic heart valves aortic and mitral, and my X-ray shows cardomegaly (enlarged heart) with unfolded aorta . I have been on medication for 16 years since the surgery (when I also suffered a stroke ) is this anything I should be seriously worried about? My GP tells me not to worry. I am 67, don t drink or smoke, and although I eat a healthy diet my mobility is limited, although not severely.