Identifying the optimal measurement timing and hemodynamic targets of portal pressure gradient after TIPS in patients with cirrhosis and variceal bleeding.

The optimal timing of measurement and hemodynamic targets of portacaval pressure gradient (PPG) after transjugular intrahepatic portosystemic shunt (TIPS) placement remain unclear. This study aimed to identify the ideal moment for hemodynamic measurements and the optimal target of PPG in patients undergoing covered TIPS for variceal bleeding. Between May 2018 and December 2021, 466 consecutive patients with recurrent variceal bleeding treated with covered TIPS were prospectively included. Post-TIPS PPG was measured immediately (immediate PPG), 24-72 hours (early PPG), and again 1 month (late PPG) after TIPS placement. The agreement among PPGs measured at different time points was assessed by intra-class correlation coefficient (ICC) and Bland-Altman method. The unadjusted and confounder-adjusted effects of PPGs on clinical outcomes (portal hypertensive complications [PHCs], overt hepatic encephalopathy [OHE], further decompensation, and death) were assessed using Fine and Gray competing risk regression models. The agreement between early PPG and late PPG (ICC: 0.34) was better than that between immediate PPG and late PPG (ICC: 0.23, p <0.001). Early PPG revealed an excellent predictive value for PHCs (early PPG≥ vs. <12 mmHg: adjusted hazard ratio 2.17, 95% CI 1.33-3.55, p = 0.002) and OHE (0.40, 95% CI 0.17-0.91, p = 0.030), while immediate PPG did not. Late PPG showed a predictive value for PHC risk but not OHE. By targeting the lowest risk of further decompensation, we identified an optimal hemodynamic target with early PPG ranging from 11 to 14 mmHg that was associated with a decreased risk of OHE and effective prevention of PHC. PPG measured 24 to 72 hours after TIPS correlates with long-term PPG and clinical outcomes, and a hemodynamic target PPG of 11-14 mmHg is associated with reduced encephalopathy but not compromised clinical efficacy. The optimal timing of measurement and hemodynamic targets of portacaval pressure gradient (PPG) after transjugular intrahepatic portosystemic shunt (TIPS) remain unclear. Here we show that post-TIPS PPG measured at least 24 hours but not immediately after the procedure correlated with long-term PPG and clinical events. Thus, PPG measurements taken at least 24 hours after TIPS should be used to guide decision making in order to improve clinical outcomes. Targeting a post-TIPS PPG of 11-14 mmHg or a 20%-50% relative reduction from pre-TIPS baseline measured 24-72 hours after the procedure was associated with reduced encephalopathy but not compromised clinical efficacy. Thus, these criteria could be used to guide TIPS creation and revision in patients with cirrhosis and variceal bleeding undergoing covered TIPS. ClinicalTrials.gov, ID: NCT03590288.

Lv Y ，Wang Q ，Luo B ，Bai W ，Li M ，Li K ，Wang Z ，Xia D ，Guo W ，Li X ，Yuan J ，Zhang N ，Wang X ，Xie H ，Pan Y ，Nie Y ，Yin Z ，Fan D ，Han G ... -  《-》

Post-TIPS Overt Hepatic Encephalopathy Increases Long-Term but Not Short-Term Mortality in Cirrhotic Patients With Variceal Bleeding: A Large-Scale, Multicenter Real-World Study.

Transjugular intrahepatic portosystemic shunt (TIPS) is an established procedure for managing portal hypertension in cirrhotic patients, but the impact of post-TIPS overt hepatic encephalopathy (OHE) on survival remains controversial. While its effect on short-term survival is well-documented, its long-term implications remain unclear. This study aims to investigate the long-term impact of post-TIPS OHE on mortality in cirrhotic patients for variceal bleeding, focusing on the timing and predictive value of OHE beyond the first year post-TIPS. A multicenter, retrospective cohort study was conducted involving 3262 cirrhotic patients who underwent TIPS for variceal bleeding at seven Chinese tertiary centers between January 2010 and June 2020. Clinical data, including demographics, procedure details, post-TIPS complications and survival outcomes, were collected. The primary endpoints were all-cause mortality and OHE, with follow-up until death, liver transplantation or 60 months. Propensity score matching minimised confounding effects, and multivariate Fine-Grey competing risk models identified independent mortality predictors. During a median follow-up of 1077 days, 33.2% developed post-TIPS OHE, associated with higher MELD and Child-Pugh scores. Among these, 19.3% died, with a median time from OHE onset to death of 947 days. Post-TIPS OHE was not linked to early survival (within 12 months) but emerged as an independent predictor of long-term mortality beyond 24 months, consistent across various clinical scenarios. Post-TIPS OHE does not affect short-term survival but significantly increases long-term mortality risk. These findings highlight the need for continuous monitoring and tailored interventions to improve long-term outcomes in post-TIPS patients.

Xiang Y ，Tie J ，Wang G ，Zhuge Y ，Wu H ，Zhu X ，Xue H ，Liu S ，Yang L ，Xu J ，Zhang F ，Zhang M ，Wei B ，Li P ，Wang Z ，Wu W ，Chen C ，Yang S ，Han Y ，Tang C ，Qi X ，Zhang C ... -  《-》

Machine learning prediction of hepatic encephalopathy for long-term survival after transjugular intrahepatic portosystemic shunt in acute variceal bleeding.

Transjugular intrahepatic portosystemic shunt (TIPS) is an effective intervention for managing complications of portal hypertension, particularly acute variceal bleeding (AVB). While effective in reducing portal pressure and preventing rebleeding, TIPS is associated with a considerable risk of overt hepatic encephalopathy (OHE), a complication that significantly elevates mortality rates. To develop a machine learning (ML) model to predict OHE occurrence post-TIPS in patients with AVB using a 5-year dataset. This retrospective single-center study included 218 patients with AVB who underwent TIPS. The dataset was divided into training (70%) and testing (30%) sets. Critical features were identified using embedded methods and recursive feature elimination. Three ML algorithms-random forest, extreme gradient boosting, and logistic regression-were validated via 10-fold cross-validation. SHapley Additive exPlanations analysis was employed to interpret the model's predictions. Survival analysis was conducted using Kaplan-Meier curves and stepwise Cox regression analysis to compare overall survival (OS) between patients with and without OHE. The median OS of the study cohort was 47.83 ± 22.95 months. Among the models evaluated, logistic regression demonstrated the highest performance with an area under the curve (AUC) of 0.825. Key predictors identified were Child-Pugh score, age, and portal vein thrombosis. Kaplan-Meier analysis revealed that patients without OHE had a significantly longer OS (P = 0.005). The 5-year survival rate was 78.4%, with an OHE incidence of 15.1%. Both actual OHE status and predicted OHE value were significant predictors in each Cox model, with model-predicted OHE achieving an AUC of 88.1 in survival prediction. The ML model accurately predicts post-TIPS OHE and outperforms traditional models, supporting its use in improving outcomes in patients with AVB.

Liu DJ ，Jia LX ，Zeng FX ，Zeng WX ，Qin GG ，Peng QF ，Tan Q ，Zeng H ，Ou ZY ，Kun LZ ，Zhao JB ，Chen WG ... -  《-》

Transjugular intrahepatic portosystemic shunt (TIPS) with variceal embolization reduces rebleeding risk for patients with portal pressure gradient over 12 mmHg: A long-term follow-up study.

Bai Y ，Liu J ，Wu W ，Zhou B ，Sun B ，Yao W ，Liu X ，Zhao H ，Guo Y ，Jiang X ，Liang B ，Yang L ，Zheng C ... -  《-》

Early Dynamics of Portal Pressure Gradient After TIPS Insertion Predict Mortality.

Transjugular intrahepatic portosystemic shunt (TIPS) placement leads to a reduction in portal pressure and an improvement in survival in patients with recurrent and refractory ascites and variceal haemorrhage. Prediction of post-TIPS survival is primarily determined by factors identified before the TIPS procedure, as data collected during or after TIPS implantation are limited. The aim of the study was to evaluate the influence of early hemodynamic changes after TIPS placement on survival, in order to refine post TIPS management. In this prospective bicentric study, consecutive patients (n = 105) undergoing TIPS placement for ascites or variceal haemorrhage underwent measurement of portal pressure gradient (PPG) immediately at TIPS insertion (PPG0) and 24 h later (PPG24h) and the ΔPPG was calculated from PPG24h and PPG0 (ΔPPG = PPG24h-PPG0). Kaplan-Meier survival analysis and uni- and multivariable regression analyses were conducted to identify survival predictors. Patients with lack of increased ΔPPG exhibited poorer 90-day and 1-year survival compared to patients with increased ΔPPG. This worse survival was independent of The Model for End-Stage Liver Disease (MELD) score, Child-Pugh score, bilirubin levels, creatinine and the Freiburg index of post-TIPS survival (FIPS) > 0.92. Among these patients with poorer outcome, elevated bilirubin (> 25 μmol/L) further distinguished survivors from non-survivors. Lack of increased ΔPPG post-TIPS insertion identifies a high-risk patient group with worse survival. We propose incorporating this second PPG measurement and determining ΔPPG into clinical practice to identify these patients early and tailor post-TIPS patient care.

Reuken PA ，Franz A ，Wirtz TH ，Ripoll C ，Aschenbach R ，Teichgräber U ，Pollmanns MR ，Kiehntopf M ，Keil S ，Kuhl C ，Schulze PC ，Trautwein C ，Bruns T ，Stallmach A ，Zipprich A ... -  《-》