Electromagnetic Positioning-Assisted Ultrasound Guidance in Transjugular Intrahepatic Portosystemic Shunt (TIPS)

Transjugular intrahepatic portosystemic shunt (TIPS) is an important method for treating complications related to portal hypertension. The difficulty of its surgical procedures lies in portal vein puncture. Improper operation may lead to complications such as hepatic artery hemorrhage, hepatic capsular hemorrhage, and biliary tract hemorrhage. At present, the means of guiding portal vein puncture are limited. There is evidence supporting that ultrasound guidance can help reduce the number of punctures and lower the radiation dose, etc. However, ordinary ultrasound is limited by the influence of dimensions and can only guide punctures in the same plane, with limited guiding value. The use of the Imedis9000 magnetic navigation system can guide percutaneous vascular puncture in multiple dimensions, which can increase the success rate of puncture and shorten the operation time. This study conducted a prospective, single-arm study. The Imedis9000 magnetic navigation system was used for real-time positioning to guide precise TIPS stent implantation. The number of punctures, puncture success rate, stent implantation success rate, and the incidence of adverse events were evaluated to determine the application value of the Imedis9000 magnetic navigation system in TIPS procedure.