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Ann Thorac Surg 2000;70:2034-2039
© 2000 The Society of Thoracic Surgeons

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Original article: cardiovascular

Carotid and aortic screening for coronary artery bypass grafting

^a Department of Cardiovascular Surgery, Tsukuba Medical Center Hospital, Ibaraki, Japan

Accepted for publication May 24, 2000.

Address reprint requests to Dr Fukuda, Department of Cardiovascular Surgery, Tsukuba Medical Center Hospital, 1-3-1 Amakubo, Tsukuba, Ibaraki, 305-8558, Japan
e-mail: fukuda{at}tmch.or.jp

Background. To identify risk factors for preexisting carotid and aortic disease in coronary artery bypass grafting (CABG), preoperative parameters were analyzed.

Methods. Three-hundred eight consecutive patients undergoing elective isolated CABG were investigated through preoperative duplex scanning of the carotid artery, computed tomography of the chest, and intraoperative ultrasonography of the ascending aorta.

Results. Prevalence of carotid stenosis and ascending aortic atherosclerosis was 14.3% (44 of 308) and 30.2% (93 of 308), respectively. Multivariate analysis indicated that significant independent risk factors for carotid stenosis were atherosclerosis of the ascending aorta (p = 0.028, odds ratio [OR] = 2.16), peripheral vascular disease (p = 0.008, OR = 4.08), and history of stroke (p = 0.0004, OR = 3.73). Significant independent risk factors for ascending aortic atherosclerosis were peripheral vascular disease (p = 0.029, OR = 3.05), age older than 60 years (p = 0.009, OR = 2.94), and carotid stenosis (p = 0.018, OR = 2.27). Modifications on the operative procedure for aortic atherosclerosis were carried out in 49 patients. Overall hospital mortality and morbidity for stroke were 0.97% and 0.65%, respectively.

Conclusions. Prevalence of carotid and aortic disease was not low among candidates for CABG. Carotid and aortic screening may help to modify the operative strategy to reduce morbidity of stroke.

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