Percutaneous transhepatic biliary drainage in patients with cholestasis following liver transplantation.

Purpose: Biliary strictures are among the most common complications following liver transplantation (LT). If endoscopic retrograde cholangiography fails, percutaneous transhepatic biliary drainage (PTBD) may serve as an alternative approach. Description of clinical important short- and long-term outcomes as well as outcome prediction following PTBD after LT are scarce.

Methods: We analyzed outcomes of 56 liver-transplanted adults with biliary complications receiving a PTBD. We described the safety and longitudinal laboratory changes. We analyzed as endpoints, incidence of biliary complications, need for surgical biliary revision/re-LT and overall-survival at 12- and 60-months. We used simple comparison tests accordingly and performed competing risk analysis and multivariate competing risk regression as well as log-rank test and cox proportional hazard regression for further analysis.

Results: PTBD procedures had a high technical success rate (98%) and tolerable safety profile. Multiple laboratory indicators improved during follow-up (37 patients with complete biochemical follow-up). Incidence of subsequent biliary complications was highly dependent on the nature of present biliary strictures (Anastomotic stricture (AS): adjusted SHR: 0.26, 95% CI: 0.09-0.78, p = 0.016). Need for surgical biliary revision/re-LT remained below 15%. 12-month survival was significantly better, if drainage into the small intestine was achieved at first attempt compared to completely external drainage (internal: 92.9 vs. external: 67.9%, p = 0.018). Patients with AS had a numerically higher long-term-survival and higher C-reactive-protein (CRP) and lower body-mass-index (BMI) at baseline were significantly associated with inferior short- and long-term-survival.

Conclusion: PTBD for biliary complications following LT had a high technical success and a tolerable safety profile. Incidence of subsequent biliary complications was highly dependent on the nature of biliary strictures and increased mortality was found in patients with higher CRP, lower BMI and failure of initial PTBD internalization.