Study Between The TIPS Stents Release Parameters And Shunt Dysfunction

Objective (s):To explore the relationship between the shunt dysfunction and the parameters of both ends of the branch of transjugular intrahepatic portosystemic shunt(TIPS) with fluency stent graft.Methods: A total of 43 patients with cirrhotic portal hypertension who underwent TIPS with a single Fluency stent graft from September 2014 to September 2016 were collected. First of all we measured the angle of both ends of the branch (a1、a2)、the length of the stent into the vena cava(L1)、the length of the stent in the hepatic vein and portal vein (L2、L4)、vascular width of hepatic vein and portal vein in the puncture site position(L3、L5) according to intraoperative angiography and postoperative multi-slice computed portography (MSCTP) imaging.And then the t test or the non-parametric tests was used to analyze the relationship between them and the patency of postoperative shunt.Results: The procedures were completed successfully in all the 43 patients. Hepatic encephalopathy occurred in 18.6% (8/43) of the patients after TIPS.The cumulative patency rate at 6 month and 1 year are 90.7%、83.7% respectively.Compared with patency,the angle of both ends of the branch(al、a2)、the length of the stent in the hepatic vein(L2)、the rato between L2 and L3 were statistically significant. Compared with patency, the length of the stent in the the vena cava and portal vein(L1、L4)、the tato between L4 and L5 were not statistically significant.Conclusion(s):1.The early and mid-term shunt dysfunction is mainly due to block of both ends of the stent using Fluency stent graft for TIPS.2.Increasing the angle of both ends of the stent can increase postoperative shunt patency of tips which use Fluency stent grafts.3. The length of the stent in the hepatic vein is more than 2cm or more than twice the width of the hepatic vein can improve the improve the shunt patency..