彩色多普勒超声检查在下肢深静脉血栓诊断中的应用价值

Clinical value of color Doppler ultrasonography in the diagnosis of deep venous thrombosis of lower extremities

目的分析和探讨彩色多普勒超声检查在诊断下肢深静脉血栓中的临床应用价值。方法选取2017年3月~2019年3月我院23例下肢深静脉血栓患者的临床资料进行回顾性分析,定义为观察组。同期选取23例健康人作为对照组。两组研究对象均采用彩色多普勒超声检查,以静脉造影结果作为下肢静脉血栓诊断的"金标准"。观察和比较两组研究对象的各下肢静脉[双侧股总静脉(CFV)、股浅静脉(SFV)、腘静脉(POV)、胫后静脉(PTV)、内侧腓肠静脉(MGV)]内径;比较两组研究对象的CFV、SFV、POV彩色多普勒血流显像(CDFI)值;记录观察组患者的诊断准确率、灵敏度;观察和比较两组研究对象的下肢静脉血流情况(收缩期峰值流速、舒张末期流速及阻力指数)。结果观察组患者的CFV内径、SFV内径、POV内径、PTV内径、MGV内径高于对照组,差异有统计学意义(P<0.05);观察组患者的CFV CDFI值、SFV CDFI值、POV CDFI值均低于对照组,差异有统计学意义(P<0.05)。观察组患者的诊断准确率为91.30%,灵敏度为90.91%。观察组患者的收缩期峰值流速、舒张末期流速高于对照组,阻力指数低于对照组,差异有统计学意义(P<0.05)。结论彩色多普勒超声是诊断下肢深静脉血栓的有效方法,能够检测下肢静脉内径、CDFI值等,且有较高的诊断准确率及灵敏度,能够为临床诊断及后续治疗提供依据,适合普及。

Objective To analyze and evaluate the clinical value of color Doppler ultrasonography in the diagnosis of deep venous thrombosis of lower extremities. Methods Clinical data of 23 patients with deep vein thrombosis of lower extremities in our hospital from March 2017 to March 2019 were retrospectively analyzed and defined as observation group. During the same period, 23 healthy people were selected as the control group. Both groups were examined by color Doppler ultrasound, the "gold standard" for the diagnosis of venous thrombosis of lower extremities with the result of venography. The inner diameters of the lower limb veins(bilateral common femoral vein [CFV], superficial femoral vein [SFV], popliteal vein [POV], posterior tibial vein [PTV], and medial sural vein [MGV]) of the two groups were observed and compared. The color Doppler flow imaging(CDFI) values of CFV, SFV and POV were compared. The diagnostic accuracy and sensitivity of the observation group were recorded. Venous blood flows(systolic peak velocity, enddiastolic velocity, and resistance index) of the two groups were observed and compared. Results The diameters of CFV,SFV, POV, PTV and MGV in the observation group were higher than those in the control group, with statistically significant differences(P<0.05). CDFI values of CFV, SFV and POV in the observation group were all lower than those in the control group, with statistically significant differences(P<0.05). The diagnostic accuracy and sensitivity of the observation group were 91.30% and 90.91% respectively. The systolic peak velocity and end-diastolic velocity in the observation group were higher than those in the control group, and the resistance index was lower than that in the control group, with statistically significant differences(P<0.05). Conclusion Color Doppler ultrasonography is effective in the diagnosis of deep venous thrombosis of the lower extremities. It can detect the lower extremity venous diameter index and CDFI values, and has high diagnosis accuracy and sensitivity, which can provide a basis for clinical diagnosis and subsequent treament which is suitable for popularization.