Invasive Fungal Infections After Liver Transplantation: A Retrospective Matched Controlled Risk Analysis

BACKGROUND Invasive fungal infections (IFI) are major risks for mortality after liver transplantation (LT). The aim of this study was to evaluate possible risk factors for the development of IFI after LT. MATERIAL AND METHODS All adult patients with IFI after LT between January 2012 and December 2016 at Essen University were identified. Pre-, intra-, and postoperative data were reviewed. These were compared to a 1-to-3 matched control group. Multinominal univariate and multivariate regression analyses were performed. RESULTS Out of the 579 adults who underwent LT, 33 (5.6%) developed postoperative IFI. Fourteen had invasive aspergillosis with 7 (50%) mortality, and 19 had Candida sepsis with 7 (37%) mortality. The overall mortality due to invasive fungal infections was 42%. Perfusion fluid contamination with yeast was detected in 5 patients (15%). Multivariate regression analyses showed that preoperative dialysis (OR=1.163; CI: 1.038-1.302), Eurotransplant donor risk index (OR=0.04; CI=0.003-0.519), length of hospital stay (OR=25.074; CI: 23.99-26.208), and yeast contamination of the preservation fluid (OR=47.8; CI: 4.77-478, 96) were associated with IFI in the Candida group, whereas duration of surgery (OR=1.013; CI: 1.005-1.022), ventilation hours (OR=0.993; CI=0.986-0.999), and days of postoperative dialysis (OR=1.195; CI: 1.048-1,362) were associated with IFI in the aspergillosis group. CONCLUSIONS Post-LT IFI had 42% mortality in our cohort. Prophylactic antifungal therapy should be expanded to broader risk groups as defined above.