The optimal timing of surgical intervention remains controversial in asymptomatic patients with very severe aortic stenosis. We therefore compared the long-term results of early surgery and a conventional treatment strategy.
Division of Cardiac Surgery, Cardiology, Biostatistics, Asan Medical Center, College of Medicine, University of Ulsan, 388-1, Poongnap-dong, Songpa-ku, Seoul, Korea 138-736. dhkang@amc.seoul.kr
