Objective To investigate the diagnosis value of ultrasonography in the of lower extremity arterial disease in type 2 diabetes melitus and its influencing factors.Methods Selected 120 patients with Type 2 diabetes in our hospital from February 2013 to January 2016 as the research object,the patients with lower extremity lesions were enroled in the study group(60 cases), and the patients with simple diabetes melitus were included in the control group (60 cases). The vascular wal thickness(IMT), atherosclerotic plaque and vascular occlusion were detected by ultrasound. Systolic blood pressure, fasting blood glucose, glycosylated hemoglobin, total cholesterol (TC) and triglyceride (TG) levels of were compared between the two groups.Results IMT abnormalities, atherosclerotic plaques and luminal stenosis rate of patient in the study group were higher than the control group, the difference was statisticaly significant(P<0.05). Fasting blood glucose, glycosylated hemoglobin, TC, TG levels of patient in the study group were higher than the control group, the difference was statisticaly significant(P<0.05).Conclusion Ultrasound has important diagnostic value in type 2 diabetic with lower extremity arterial disease, blood glucose and blood lipid abnormalities are the main influencing factors of the lower extremity arterial disease in type 2 diabetes.%目的：探讨2型糖尿病下肢动脉病变的超声诊断价值及影响因素。方法选取2013年2月～2016年1月我院收治2型糖尿病患者120例为研究对象，将合并下肢病变患者纳入研究组（60例），单纯糖尿病患者纳入对照组（60例）。超声检测所有患者的下肢血管壁内膜中层厚度（IMT）、粥样斑块及血管闭塞情况。比较两组患者收缩压、空腹血糖、糖化血红蛋白、总胆固醇（TC）和甘油三酯（TG）水平。结果研究组IMT异常、粥样斑块和血管腔狭窄发生率均高于对照组，比较差异有统计学意义（P＜0.05）。研究组患者空腹血糖、糖化血红蛋白、TC、TG水平均高于对照组，比较差异有统计学意义（P＜0.05）。结论超声在2型糖尿病下肢动脉病变中有重要的诊断价值。血糖及血脂异常为2型糖尿病下肢动脉病主要影响因素。
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