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The Journal of Thoracic and Cardiovascular Surgery, Vol 92, 853-858, Copyright © 1986 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association

ARTICLES

Early and late results of operation after thrombolytic therapy for acute myocardial infarction

JA Petrovich, JA Schneider, GJ Taylor, FL Mikell, JE Batchelder, HW Moses, JT Dove and HA Wellons Jr

Recent reports have established the efficacy of thrombolytic therapy in limiting myocardial infarction. Between September 1981 and September 1984, 355 patients were treated with intracoronary (87) or intravenous (268) streptokinase within 6 hours of acute myocardial infarction. Thrombolysis was successful in 63% of patients receiving intracoronary streptokinase and 81% of those receiving intravenous streptokinase. Because residual critical stenosis is usually present and predisposes the patient to reinfarction, revascularization procedures were investigated as an extension of thrombolytic therapy. One hundred ninety-one patients aged 56 +/- 10 (25 to 77) years underwent early surgical revascularization 4.1 +/- 3.6 days after intracoronary or intravenous streptokinase for acute myocardial infarction. Results of this treatment were successful in 89% (170/191) of the patients. Thirteen patients (6.8%) underwent emergency coronary artery bypass grafting for failed percutaneous angioplasty. There were 3.2 +/- 1.4 grafts per patient and 3.8 +/- 2.9 units of blood were administered in the perioperative period. Operative mortality was 4.2% (8/191) with a 15.4% mortality (2/13) in the group in which angioplasty failed. Mean hospitalization time after operation was 10.9 +/- 6.8 days. Follow-up was 27 +/- 8 (12 to 48) months and was obtained on all patients. Late cardiac mortality was 1.0% (2/183). Ninety percent of the follow-up group was without angina and only 1.7% showed no improvement after operation. Reinfarction occurred in four patients (2.2%), with graft failure documented by coronary arteriography in two of these patients. This experience indicates that early revascularization after thrombolytic therapy may be performed with low operative mortality and morbidity and is associated with excellent late results.

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