ABSTRACT
This is a 30-year review of 4,059 patients who underwent cardiac operations at Yonsei University Medical Center between September 1, 1956 and August 31, 1986. Of these, there were 1,191 patients with acquired and 2,868 with congenital cardiac lesions, constituting 29% and 71% of the group, respectively. Of 1,191 patients with acquired lesions, the number in each major category and the operative mortality were as follows: closed mitral commissurotomy, 210 and 0.95%; open mitral commissurotomy, 164 and 43%, mitral valve replacement, 370 and 3.5%, aortic valve replacement, 154 and 9.7%; double valve replacement 123 and 2.4%, and coronary artery bypass grafting 94 and 85%. Of 2,868 patients with congenital cardiac lesions, the number and operative major categories were as follows: repair of tetralogy of Fallot, 593 and 93% repair of ventricular septal defect 817 and 7.1%, closure of atrial septal defect 403 and 1.5%, and closure of patent ductus arteriosus, 550 and 1.3%.