A novel score predicts mortality after transjugular intrahepatic portosystemic shunt: MOTS - Modified TIPS Score

Luisa Fürschuß, Florian Rainer, Maria Effenberger, Markus Niederreiter, Rupert H Portugaller, Angela Horvath, Peter Fickert, Vanessa Stadlbauer, Luisa Fürschuß, Florian Rainer, Maria Effenberger, Markus Niederreiter, Rupert H Portugaller, Angela Horvath, Peter Fickert, Vanessa Stadlbauer

Abstract

Background and aims: The high risk for severe shunting-related post-interventional complications demands a stringent selection of candidates for transjugular intrahepatic portosystemic shunt (TIPS). We aimed to develop a simple and reliable tool to accurately predict early post-TIPS mortality.

Methods: 144 cases of TIPS implantation were retrospectively analysed. Using univariate and multivariate Cox regression analysis of factors predicting mortality within 90 days after TIPS, a score integrating urea, international normalized ratio (INR) and bilirubin was developed. The Modified TIPS-Score (MOTS) ranges from 0 to 3 points: INR >1.6, urea >71 mg/dl and bilirubin >2.2 mg/dl account for one point each. Additionally, MOTS was tested in an external validation cohort (n = 187) and its performance was compared to existing models.

Results: Modified TIPS-Score achieved a significant prognostic discrimination reflected by 90-day mortality of 8% in patients with MOTS 0-1 and 60% in patients with MOTS 2-3 (p < .001). Predictive performance (area under the curve) of MOTS was accurate (c = 0.845 [0.73-0.96], p < .001), also in patients with renal insufficiency (c = 0.830 [0.64-1.00], p = .02) and in patients with refractory ascites (c = 0.949 [0.88-1.00], p < .001), which are subgroups with particular room for improvement of post-TIPS mortality prediction. The results were reproducible in the validation cohort.

Conclusions: Modified TIPS-Score is a novel, practicable tool to predict post-TIPS mortality, that can significantly simplify clinical decision making. Its practical applicability should be further investigated.

Trial registration: ClinicalTrials.gov NCT03459378.

Keywords: hepatic encephalopathy; mortality; prediction; renal insufficiency; risk; transjugular intrahepatic portosystemic shunt.

Conflict of interest statement

The authors declare that they have no relevant conflicts of interest.

© 2022 The Authors. Liver International published by John Wiley & Sons Ltd.

Figures

FIGURE 1
FIGURE 1
Flowchart of patients in the study. Three indication groups: diuretic‐refractory or recurrent ascites, portal hypertensive bleeding and refractory pleural effusion. PVT, portal venous thrombosis; TIPS, transjugular intrahepatic portosystemic shunt
FIGURE 2
FIGURE 2
Kaplan–Meier curves illustrating the probability of 90‐day survival of MOTS groups in the training cohort. p < .001; number of patients at risk (number of patients censored) at day 0, 20, 40, 60, 90. MOTS, modified transjugular intrahepatic portosystemic shunt‐score
FIGURE 3
FIGURE 3
ROC curves illustrating the predictive capability of models in the total training cohort. All scores available in n = 82; BILIPLT, model combining bilirubin and platelet count; CLIF‐C AD, CLIF‐C Acute Decompensation score; FIPS, Freiburg index of post‐TIPS survival; MELD, model for end stage liver disease; MELD‐Na, MELD sodium score; MOTS, modified TIPS score; ROC, receiver operating characteristic curve; TIPS, transjugular intrahepatic portosystemic shunt; all models were significantly predictive. For reference see Table 3 showing the related area under receiver operating characteristic, confidence intervals and p‐values
FIGURE 4
FIGURE 4
Kaplan–Meier curves illustrating the probability of 90‐day survival of MOTS groups in the validation cohort. p < .001; number of patients at risk (number of patients censored) at day 0, 20, 40, 60, 90

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