Prevalence of asymptomatic carotid artery stenosis in patients with arteriosclerosis obliterans of lower extremities and risk factor analysis

Zhonghua yi xue za zhi
X T SongY J Li

Abstract

To evaluate the prevalence of asymptomatic carotid artery stenosis in patients with arteriosclerosis obliterans of lower extremities, and evaluate its effect on the treatment strategies for lower extremity artery lesions. Totally 348 patients with arteriosclerosis obliterans of lower extremities who had no cerebrovascular symptoms or events in the past were enrolled from September 2012 to September 2014 in the Department of Vascular Surgery, Peking Union Medical College Hospital. Preoperative color doppler ultrasonography results of carotid arteries and demographic characteristics were retrospectively collected. The peak systolic velocity and the presence of plaque on gray-scale in the internal carotid arteries were used for diagnosing and grading internal carotid artery stenosis. A stenosis ≥50% was diagnosed as carotid artery stenosis. Binary logistic regression analysis was used to evaluate related risk factors. Treatment strategies for the artery lesions of lower extremities were compared between those with and without asymptomatic carotid artery stenosis. Seventy-seven (22.1%) patients were found to have carotid artery stenosis. Forty-four (12.6%) patients were found to have a stenosis ≥70% or occlusion. Smoking (OR=2.122,...Continue Reading

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