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  • Title: A new choice of stent for transjugular intrahepatic portosystemic shunt creation: Viabahn ePTFE covered stent/bare metal stent combination.
    Author: Liu J, Meng J, Zhou C, Shi Q, Yang C, Ma J, Chen M, Xiong B.
    Journal: J Interv Med; 2021 Feb; 4(1):32-38. PubMed ID: 34805945.
    Abstract:
    OBJECTIVES: To compare the clinical outcomes in terms of structure and function between the insertion of a transjugular intrahepatic portosystemic shunt (TIPS) created with the Viabahn ePTFE covered stent/bare metal stent (BMS) combination and the Fluency ePTFE covered stent/BMS combination. METHODS: A total of 101 consecutive patients who received a TIPS from February 2016 to August 2018 in our center were retrospectively analyzed. Sixty-four subjects were enrolled in the Viabahn group and 37 were enrolled in the Fluency group. The geometry characteristics of the TIPS were calculated, and the associated occurrence of shunt dysfunction, survival, overt hepatic encephalopathy, and variceal rebleeding were evaluated. RESULTS: The technical success rate was 100%. After the insertion of the TIPS, the rate of shunt dysfunction during the first 3 months was significantly different between the Viabahn and Fluency groups (1.6% and 13.5%, respectively; p ​= ​0.024). Multivariate analysis indicated that the angle of portal venous inflow (α) was the only independent risk factor for shunt dysfunction (hazard ratio ​= ​1.060, 95% confidence interval ​= ​1.009-1.112, p ​= ​0.020). In addition, 3 months after the TIPS insertion, the α angle distinctly increased from 20.9° ​± ​14.3°-26.9° ​± ​20.1° (p ​= ​0.005) in the Fluency group but did not change significantly in the Viabahn group (from 21.9° ​± ​15.1°-22.9° ​± ​17.6°, p ​= ​0.798). CONCLUSIONS: Shunt dysfunction was related to the α angle owing to the slight effect on the α angle after the implantation of the TIPS. The Viabahn ePTFE covered stent/BMS combination was more stable in structure and promised higher short-term stent patency compared with the Fluency ePTFE covered stent/BMS combination.
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