The outcomes of vascular access graft thrombectomy after dynamic surveillance using duplex ultrasound sonography

The aim of this study was to evaluate the influence of vascular access grafts surveillance using ultrasound Doppler sonography on surgical treatment outcomes in thrombosed grafts. 32 patients were included. 23 (72%) were females and 9 (28%) were males. Median age was 54.9±11.2 years. 17 (54%) patients had an arm graft, and 15 (46%) had a thigh graft. Patients were divided into 2 groups. 1-st group (n=16) had an episode of thrombosis without any significant ultrasound Doppler sonography (USDS) lesions or stenosis less than 50%. 2-nd group (n=16) had an episode of thrombosis with hemodynamic significant lesion on USDS (stenosis more than 50%). There were 44 surgical thrombectomy among 32 patients. In 15 (36%) cases reconstructive surgery were made for graft salvage. Mean primary patency was 35.9±26.1 months. Mean secondary patency was 28.6±21.9 months (1-st group), 29.9±32.8 months (2-nd group), (p>0.05). Mean cumulative patency was 74.6±40.0 months (1-st group), 557±41.5 months (2-nd group). (p>0.05). Different kinds of USDS data were analyzed, such as access blood flow (Qa, ml/min). Mean Qa was 1443.2±369.8 ml/min (1-st group), 784.5±224.3 ml/min (2-nd group), (p<0,05). Vascular access monitoring using USDG can optimize surgical treatment and significantly improve graft patency.

протезный артериовенозный доступ, стеноз зоны анастомоза, тромбоз, тромбэктомия, ультразвуковое Допплеровское сканирование, anastomotic stenosis, vascular access graft, thrombosis, thrombectomy, ultrasound Doppler sonography, vascular access surveillance

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