Prosthetic and Homograft Heart Valves

摘要: Tuffier performed an aortic valvulotomy in 1912, and Cutler, a mitral commissurotomy 1923, but it wasn’t until 1953, when cardiopulmonary bypass was developed, that surgeons, by direct visualization of valvular pathology, began earnest to explore the range possibilities treatment these abnormalities. Prosthetic valves were placed initially descending aorta, 1960 Harken et al. achieved much better outcomes placing them proximally into annulus.1 During same year, Starr replaced valve with mechanical ball-and-cage valve.2 Since then, prosthetic surgery has enjoyed ever-increasing success. Following replacement, pulmonary hypertension is relieved3–6 following compensatory mechanisms hypertrophy and/or ventricular dilatation regress7,8 impaired performance improves.8,9 Thousands patients undergo replacement annually worldwide.