Abstract: Objective To investigate the sensitivity, specificity and accuracy of color Doppler ultrasound in the diagnosis of lower limb deep vein thrombosis. Methods The clinical data of 88 patients with lower limb disorders who had admitted to our hospital from January 2018 to January 2019 were retrospectively analyzed. All the patients were diagnosed by color Doppler ultrasound. The sensitivity, specificity and accuracy of color Doppler ultrasound in the diagnosis of lower limb deep vein thrombosis were evaluated by using digital subtraction angiography as the gold standard. Results Angiography showed that 60 cases of deep venous thrombosis and 28 cases of non-deep venous thrombosis were found in 88 patients with lower extremity disorders. According to the diagnosis of color Doppler ultrasound, 58 cases were lower extremity deep vein thrombosis patients and 30 cases were non-lower limb deep vein thrombosis patients. The accuracy rate was 95.45%, the sensitivity was 95.00%, and the specificity was 96.43%. The accuracy rate of color Doppler venous examination and angiography was 95.00% There was no significant difference in the results of shadow vein examination (χ² = 2.274, P = 0.132). Conclusion Color Doppler ultrasound has good diagnostic efficacy in diagnosing patients with deep venous thrombosis of lower limbs, which is beneficial to provide reference for clinical diagnosis and treatment.

Key words: lower limb deep vein thrombosis, color Doppler ultrasound, sensitivity, specificity, accuracy

摘要： 目的 探讨彩色多普勒超声诊断下肢深静脉血栓的敏感性、特异性及准确率。方法 回顾性分析2018年1月~2019年1月我院收治的88例下肢障碍患者的临床资料,均采用彩色多普勒超声诊断,以数字减影血管造影为金标准,评估彩色多普勒超声诊断下肢深静脉血栓的敏感性、特异性及准确率,分析其漏诊及误诊情况。结果 经血管造影检查发现,88例下肢障碍患者中,下肢深静脉血栓患者60例,非下肢深静脉血栓患者28例;经彩超诊断,88例下肢障碍患者中,下肢深静脉血栓患者58例,非下肢深静脉血栓患者30例,准确率为95.45%,灵敏度为95.00%,特异度为96.43%;彩超静脉检查准确率与血管造影静脉检查结果相比,差异无统计学意义（χ²=2.274,P=0.132）;彩超静脉检查漏诊1例胫后静脉、1例胫前静脉、1例股静脉,漏诊原因为患者存在皮下血肿、肥胖,血管位置较深;误诊1例腘静脉,患者为术后抗凝药物使用过量,存在微小血管牵拉破裂,渗血。结论 彩色多普勒超声诊断下肢深静脉血栓患者,具有良好的诊断效能,利于为临床诊治提供参考。

关键词: 下肢深静脉血栓, 彩色多普勒超声, 敏感性, 特异性, 准确率