Long-term Outcome in Single-vessel Coronary Artery Disease in Japanese Patients.

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We assessed the long-term outcome of medical therapy in 453 patients who underwent coronary angiography in the period from September 1973 to February 1984, and who had a significant stenotic lesion (75% or more stenosis) in a single coronary artery. The mean follow-up period was 9.8 years. The 5-and 10-year survival rates were, respectively, 96.0% and 91.3% in these patients, and these survival rates were comparable to the cumulative survival rates in the age-matched healthy male controls determined on the basis of overall death. Cardiac death occurred in 35/453 patients (7.7%) with single-vessel disease (SVD), and non-fatal myocardial infarction occurred in 17 patients (3.8%) during the follow-up period. The incidence of cardiac events, which was defined as cardiac death and nonfatal myocardial infarction, was as low as 1.2% per year. The survival rates were compared in terms of the presence or absence of myocardial infarction, the type of the coronary artery with stenosis, and proximal versus distal location of the stenotic lesion in the left anterior descending artery (LAD). The survival rates were similarly high in both assessed groups, with no significant differences. Patients with SVD treated medically had a good prognosis, except for those patients with decreased left ventricular function (ejection fraction≤40%).These factors should be taken into consideration when selecting therapies for patients with SVD.
International Heart Journal刊行会の論文

Long-term Outcome in Single-vessel Coronary Artery Disease in Japanese Patients.

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