METHODS: Articles were included from a systematic search of Medline, Embase, Cochrane CENTRAL, ClinicalTrials.gov and International Clinical Trials Registry from inception to the 29th of August 2020.
RESULTS: There were 213 paediatric liver recipients who underwent PTA for PV stenosis in 19 included studies published between 1991 and 2019. Balloon angioplasty was the initial treatment in the majority (n = 153). Primary stent placement (n = 34) was performed for elastic recoil, intimal tears and PV kinks and rescue stent placement (n = 14) for recurrent PV stenosis following primary balloon angioplasty. The technical success was 97.6%-100% overall, 97.6%-100% for balloon-angioplasty-only and 100% for primary stenting. The clinical success was 50%-100% overall, 50%-100% for balloon-angioplasty-only and 100% for primary stenting. Long-term PV patency was 50%-100% overall, 37.5%-100% for balloon-angioplasty-only and 100% for primary stenting. Primary balloon angioplasty was successful in 78% of the cases. Of the recurrent PV stenoses, 9% resolved with stent placement and one required a meso-Rex shunt. There was one re-transplantation without stenting. The complication rate was 2.6% for balloon-angioplasty-only (bleeding, liver abscess, 2 PV thromboses) and 5.9% for primary stenting (bleeding, stent-fracture). There was no procedure-related mortality.
CONCLUSION: Percutaneous transhepatic balloon angioplasty may be the initial management of portal vein stenosis in paediatric liver recipients. Stent placement may be a primary option in selected cases and a reliable rescue option for recurrent portal vein stenosis following balloon-angioplasty-only.
METHOD: This is a single-center descriptive and retrospective study in the quaternary Pediatric Intensive Care Unit (PICU) in Japan. All pediatric patients who underwent liver transplantation from 2019 to 2021 were eligible. The patients were divided into two groups based on culture positivity: the positive culture group and the negative culture group.
RESULTS: A total of 152 pediatric patients were included in the study. The median age was 11 months, and 86% of cases underwent living donor liver transplantation. Among the 152 cases, 18% showed positive bacterial culture results. The timing of positive culture varied bimodally, with 34% occurring after postoperative day 15. Among the positive cultures, 84% were bacterial, and 20% were fungal. Factors associated with positive culture were analyzed, and as a result, re-laparotomy and a higher graft recipient weight ratio (GRWR) were identified as factors associated with infection.
CONCLUSIONS: We reported the frequency and patterns of infections in pediatric patients undergoing living donor liver transplantation and demonstrated that factors associated with positive culture were re-laparotomy and GRWR. This study provides important clinical data for infection management after liver transplantation.