Transjugular intrahepatic portosystemic shunt (TIPS) has been used in the treatment of cirrhotic portal hypertension for more than 30 years. With the development of stent technology and clinical practice technology, TIPS is becoming more and more perfect in the treatment of portal hypertension. From the single-use of bare stent in the past to the application of bare stent combined with coated stent or particular Viatorr stent, the patency of stent has been significantly improved. In addition, the selection of stent caliber and the puncture part of shunt gradually reduces the occurrence of hepatic encephalopathy, liver failure and other complications caused by excessive shunt. TIPS technology has the advantages of minimally invasive, safe and reducing portal vein pressure. It has gradually become one of the primary surgical methods in the treatment of portal hypertension, esophagogastric variceal bleeding, intractable ascites, and so on.
Transjugular intrahepatic portosystemic shunt (TIPS) has become a standard therapy for complications of portal hypertension. The key to maximizing the therapeutic efficacy of TIPS lies in balancing the reduction of portal hypertension-related complications (such as rebleeding and ascites) against the risk of complications from excessive shunting (such as hepatic encephalopathy and liver function deterioration). Given the significant heterogeneity among patients, including the etiology of cirrhosis, hepatic reserve function, and comorbidities, traditional “one-size-fits-all” shunting strategy has proven insufficient. Therefore, the concept of individualized planning for intrahepatic portosystemic shunts has emerged. This strategy aims to achieve personalized and precise shunting through careful patient selection, optimized hemodynamic target setting, controlled shunt diameter, and integrated adjuvant therapies.
[Abstract]Cavernous transformation of the portal vein (CTPV) is a complex pathological condition characterized by the formation of cavernous venous collaterals secondary to portal vein obstruction caused by various etiologies, which often leads to portal hypertension and its associated complications. This disease features diverse causes, intricate pathological mechanisms, multidisciplinary involvement in clinical management, and considerable challenges in diagnosis and treatment. In recent years, the rapid advancement of imaging techniques and the widespread adoption of the multidisciplinary team model have markedly improved the early diagnostic rate and treatment accuracy of CTPV. However, numerous controversies remain regarding its surgical indications, therapeutic strategies, and long-term management to date. This review focuses on the etiology, clinical manifestations, imaging features, and recent therapeutic advances of CTPV, with particular emphasis on the optimization of multidisciplinary diagnostic and therapeutic strategies as well as the latest research findings. It aims to provide a systematic and practical reference for clinical practice, promote individualized comprehensive treatment, and ultimately improve the prognosis and quality of life of patients.
ObjectiveTo evaluate the value of individualized preoperative simulation in transjugular intrahepatic portosystemic shunt (TIPS).MethodsThin slice scan data of 39 patients with supine upper abdomen were obtained, three dimensional structures of bone, liver, portal vein, inferior vena cava and hepatic vein in CT scan area were reconstructed in Mimics software. According to the size of interventional instruments, a virtual RUPS-100 puncture kit and an VIATORR stent were established in 3D MAX software. Computer simulations were performed to evaluate the route from the hepatic vein puncture portal vein and stent release position. The coincidence of simulation parameters with actual surgical results was compared.Results① The time of preoperative simulation was controllable. The total simulation time was 70–110 minutes (after summing up the previous experience). Preoperative simulation in daily work would not affect the progress of treatment. ② There were 4 cases of puncturing bifurcation of portal vein, 22 cases of puncturing left branch and 13 cases of puncturing right branch during operation (24 cases of puncturing left branch and 15 cases of puncturing right branch by preoperative simulation plan). The overall coincidence rate was 89.7% (35/39). ③ Preoperative simulations were performed using 8 mm×6 cm/2 cm size VIATORR stents, and the stents used in the actual operation were the same as the simulation results. ④ Preoperative simulation and post-operative retrospective simulation could shortened the teaching and training time and enhanced the understanding of surgical intention and key steps.ConclusionPreoperative simulation based on patient's individualized three-dimensional model and virtual interventional device could guided the actual operation of TIPS more accurately, and had practical value for improving the success rate of operation and training young doctors.