Surgical treatment of severe pulmonary hypertension.
D004374:Ductus Arteriosus, Patent / Q000601:surgery; D006345:Heart Septal Defects, Ventricular / Q000601:surgery; D006801:Humans; D006976:Hypertension, Pulmonary / Q000601:surgery*; D008946:Mitral Valve Stenosis / Q000601:surgery; D011651:Pulmonary Artery / Q000002:abnormalities; D011655:Pulmonary Embolism / Q000601:surgery