I am a 5'11, 175 lb., 19-year old male. Doctors have recently discovered that I have a bicuspid aortic valve and an enlarged aorta. I am in the 3.5 cm. range and will likely have to have surgery sometime in the near future. After aortic valve surgery, what kind of exercise will I be able to do without putting strain on my heart? Will I ever be able to play hours of intense basketball again? Or lift weights?

I am wondering because I have cystic fibrosis, and it is important for me to exercise in order to maintain good lung function (at 119% now).