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Ann Thorac Surg 1997;64:1013-1018
© 1997 The Society of Thoracic Surgeons
Washington Heart, Section for Thoracic and Cardiovascular Surgery, The Washington Hospital Center, Washington, DC
Background. The occurrence of significant carotid artery disease in patients requiring coronary artery bypass grafting (CABG) results in a dilemma regarding the best surgical management. Our philosophy has been to perform simultaneous carotid endarterectomy and CABG. We reviewed the efficacy of this therapy in patients treated at a large community-based hospital.
Methods. During a 6-year period, from 1990 to 1996, 88 patients underwent simultaneous carotid endarterectomy and CABG. All patients underwent preoperative four-vessel arch arteriography and standard coronary angiography. The principal indications for combined procedures were the need for CABG and (1) symptomatic carotid artery disease; (2) internal carotid artery stenosis of 80% or more, with or without contralateral disease; or (3) an ulcerated, unstable internal carotid artery lesion, regardless of degree of stenosis. The average patient age was 68 years, and there was a 3:1 male-to-female predominance. All procedures were performed with the patients under general anesthesia. The carotid endarterectomy was performed first, and an intraluminal shunt was used in all patients.
Results. The average degree of stenosis on the operated side was 86.2%. An average of 3.6 coronary bypasses per patient were performed. Morbidity included four strokes (4.5%). There were no perioperative myocardial infarctions. There were three hospital deaths (3.4%). The combined permanent stroke and mortality rate was 6.8%. Univariate predictors of stroke were an elevated serum creatinine level, a pulmonary complication, and left main coronary artery disease. Univariate predictors of hospital death were stroke, an elevated serum creatinine level, peripheral vascular disease, and left main coronary artery disease. Multivariate predictors of a prolonged hospitalization were stroke, an elevated serum creatinine level, and a pulmonary complication. Eighty-five patients (96.6%) were discharged and alive at 30 days.
Conclusions. In the context of the indications we used to select patients for simultaneous carotid endarterectomy and CABG, the combined permanent stroke and mortality rate was less than 7%. Our management strategy identified patients that were at increased surgical risk as a result of advanced carotid and coronary artery disease. In our practice, simultaneous carotid endarterectomy and CABG is the preferred surgical approach for these high-risk patients and results in a low in-hospital morbidity and mortality using a single anesthetic and hospitalization.
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