Recent TIPS increases postoperative mortality: A national cohort study.

Abstract

Background: Patients with cirrhosis have an increased risk of postoperative mortality, which is partially attributable to portal hypertension. Preoperative TIPS placement may reduce operative risk. Studies suggesting the benefits of preoperative TIPS are limited by residual confounding and lack of longitudinal laboratory data. To address these limitations, we used granular longitudinal data from the Veterans Health Administration.

Methods: This retrospective cohort study of Veterans Health Administration patients with cirrhosis who underwent major surgery from 2008 to 2022 identified patients who underwent TIPS placement within 6 months before surgery. Demographics, comorbidities, surgery type, and longitudinal laboratory data were incorporated into a propensity score using 5:1 caliper matching for receipt of TIPS. The propensity-matched cohort included 39 patients with preoperative TIPS and 171 without.

Results: Baseline characteristics were similar between groups. In Cox regression, recent TIPS was associated with an increased risk of postoperative mortality (HR: 2.69, 95% CI: 1.37-5.30, p = 0.004), redemonstrated in 500 random resampling events (median HR: 1.71). TIPS and non-TIPS patients had similar albumin, bilirubin, and international normalized ratio 6 months before surgery; however, immediately before surgery, TIPS patients had lower albumin (p = 0.009), higher bilirubin (p = 0.001), and higher international normalized ratio (p = 0.001).

Conclusions: In a propensity-matched analysis of patients with cirrhosis undergoing major surgery, recent TIPS was associated with increased postoperative mortality and worsened liver synthetic function in the immediate preoperative period. TIPS placement should be carefully considered in patients with cirrhosis who may undergo surgery.