[Late results of myocardial revascularization in patients with coronary artery endarterectomy]. 2000

Z Jonjev, and A Redzek, and N Radovanović
Institut za kardiovaskularne bolesti, Univerzitetska klinika za kardiovaskularnu, hirurgiju, Sremska Kamenica.

BACKGROUND The aim of this study was to evaluate long-term results after myocardial revascularization in patients with diffuse and distal coronary disease, and to compare this procedure with the classical approach--indirect myocardial revascularization (revascularization without endarterectomy). METHODS This retrospective study was done in the period of three years, and includes patients operated between January 1, 1985 and December 31, 1990 at the University Clinic of Cardiovascular Surgery, Novi Sad. 500 patients were included and two groups were made. The investigated group consisted of 251 patients with endarterectomy and control group of 249 patients without endarterectomy. Other parameters (age, gender, preoperative hemodynamic parameters etc.) were practically the same. RESULTS Postoperative mortality (PM) during immediate 30 postoperative days was 4.64% in the investigated group, and 1.97% in the control group (total PM = 2.66%). The main causes of death were cardiac (3.74%), and the rest of them were respiratory, renal and cerebral. The highest postoperative mortality according to the localization of endarterectomy was left artery descendent (LAD) in the position of the first septal artery (36.36%). The follow-up study included 500 operated patients. The mean follow-up period was 9 years (0-13 years). Cumulative survival curve and postoperative myocardial infarction curve made by Wilcocxon (Gehan) and Kaplan-Meier methods showed no statistically significant difference between groups after 13 years of follow up. Lower incident of new angina was found in the investigated group (p < 0.01). Most of patients show good physical condition, well toleration of the stress test (Bruce protocol) and no significant impairment of ejection fraction. CONCLUSIONS Despite its long history and development, endarterectomy of coronary arteries is one of the most controversial methods in cardiac surgery. Application of this method was very restrictive mostly because its complexity and very controversial results from one institution to another. Endarterectomy of the first septal artery has the highest operative risk, but it is the method of choice in full revascularization of this region. Despite higher operative mortality, the immediate and long term results of this study show that endarterectomy of the coronary arteries is a method with very acceptable operative risk. CONCLUSIONS Endarterectomy is a good and effective method for direct myocardial revascularization in cases with diffuse coronary disease. It is the best procedure for revascularization of the septum. The number of endarterectomies and low ejection fraction are independent predictors for early and long-term mortality. Endarterectomy is also a method of choice in patients with low ejection fraction and poor coronary bed. Frequent and repeated application of angioplasty, higher incidence of diffuse and distal coronary disease and no available donors for heart transplantation will increase the application of this method. In the future we expect further improvement and complete affirmation of endartrectomy of coronary arteries.

UI MeSH Term Description Entries
D009204 Myocardial Revascularization The restoration of blood supply to the myocardium. (From Dorland, 28th ed) Internal Mammary Artery Implantation,Myocardial Revascularizations,Revascularization, Myocardial,Revascularizations, Myocardial
D011183 Postoperative Complications Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery. Complication, Postoperative,Complications, Postoperative,Postoperative Complication
D003324 Coronary Artery Disease Pathological processes of CORONARY ARTERIES that may derive from a congenital abnormality, atherosclerotic, or non-atherosclerotic cause. Arteriosclerosis, Coronary,Atherosclerosis, Coronary,Coronary Arteriosclerosis,Coronary Atherosclerosis,Left Main Coronary Artery Disease,Left Main Coronary Disease,Left Main Disease,Arterioscleroses, Coronary,Artery Disease, Coronary,Artery Diseases, Coronary,Atheroscleroses, Coronary,Coronary Arterioscleroses,Coronary Artery Diseases,Coronary Atheroscleroses,Left Main Diseases
D003331 Coronary Vessels The veins and arteries of the HEART. Coronary Arteries,Sinus Node Artery,Coronary Veins,Arteries, Coronary,Arteries, Sinus Node,Artery, Coronary,Artery, Sinus Node,Coronary Artery,Coronary Vein,Coronary Vessel,Sinus Node Arteries,Vein, Coronary,Veins, Coronary,Vessel, Coronary,Vessels, Coronary
D004691 Endarterectomy Surgical excision, performed under general anesthesia, of the atheromatous tunica intima of an artery. When reconstruction of an artery is performed as an endovascular procedure through a catheter, it is called ATHERECTOMY. Thromboendarterectomy,Endarterectomies,Thromboendarterectomies
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012189 Retrospective Studies Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons. Retrospective Study,Studies, Retrospective,Study, Retrospective

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