Six-year survival after coronary thrombolysis and early revascularization for acute myocardial infarction
The American Journal of Cardiology(1992)
Abstract
Six-year follow-up was conducted in a consecutive series of 192 patients receiving thrombolytic therapy for acute myocardial infarction (AMI) with ST-segment elevation. Cardiac catheterization was performed within a day, and patients with an open infarct artery routinely had early revascularization: 99 (67%) underwent coronary bypass surgery and 18 (12%) coronary angioplasty. With this treatment strategy, 6-year cardiac mortality was 14.5%, 6% (12 patients) in hospital and 9% (16 patients) for survivors of hospitalization. Multivariate analysis showed that predictors of cardiac death among survivors of hospitalization were a closed infarct artery at catheterization (p < 0.01), diabetes (p < 0.01) and anterior myocardial infarction (p = 0.01). A subset of 146 patients underwent radionuclide angiography before hospital discharge; for them, predictors of mortality were a closed infarct artery at catheterization (p < 0.01), anterior wall AMI (p = 0.02), and Killip class III to IV on admission (p < 0.06). Left ventricular ejection fraction was not a significant predictor of mortality for this subset of patients.
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Key words
acute myocardial infarction
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