title: Long-term results of surgery on aortic valve diseases.
abstract: At the Heart Institute of Japan, Tokyo Women's Medical College, 474 aortic valve replacements (AVR) are performed using various kinds of prosthetic devices during the period of 1965, 5-1978, 12. Most popular valve prosthesis was Björk-Shiley valve totalling 215. 56 cases were subjected to study of more than 5 years follow up. They carried operative mortality of 16.1% and late mortality of 7.1%. Thromboembolism was 5.4%. 3 patients delivered 4 normal full term babies. There were 4 reoperations for aortic orifice with successful outcome. Cardiothoracic ratio, left ventricular strain pattern on ECG, blood pressure, pulmonary artery wedge pressure, cardiac indices, ejection fraction, end-diastolic volume have post-operatively returned almost to normal in majority of cases. Actuarial survival curve beyond 6 years after AVR was 98% up to 9 years.
mesh_terms: D000293:Adolescent; D000328:Adult; D001021:Aortic Valve / Q000601:surgery*; D001022:Aortic Valve Insufficiency / Q000601:surgery; D001024:Aortic Valve Stenosis / Q000601:surgery; D004562:Electrocardiography; D005260:Female; D005500:Follow-Up Studies; D006350:Heart Valve Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D013997:Time Factors