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Graft loss after pediatric liver transplantation
Egbert Sieders1, Paul M J G Peeters, Elisabeth M TenVergert
1Liver Transplant Group of the University Hospital Groningen, Department of Surgery, Office for Medical Technology Assessment, Pediatrics, and Pathology and Laboratory Medicine, Groningen, The Netherlands.
Insights
Graft loss after pediatric liver transplantation is common, with early loss often due to vascular issues and late loss to fibrosis. Early referral and optimized surgical logistics can improve graft survival.
Area of Science:
- Hepatology
- Transplantation Surgery
- Pediatric Gastroenterology
Background:
- Graft failure is a significant challenge in liver transplantation, leading to reduced patient survival and increased need for retransplantation.
- Understanding the causes and risk factors for graft loss is crucial for improving outcomes in pediatric liver recipients.
Purpose of the Study:
- To investigate the epidemiology and causes of graft loss following pediatric liver transplantation.
- To identify specific risk factors associated with early and late graft failure.
Main Methods:
- Analysis of 157 liver transplantations performed in 120 children.
- Categorization of graft loss into early (within 1 month) and late (after 1 month) events.
- Identification of risk factors by examining recipient, donor, and peri-transplantation variables.
Main Results:
- Overall patient survival rates were 85% at 1 month and 71% at 5 years; graft survival rates were 71% at 1 month and 53% at 5 years.
- Forty-five percent of grafts (71/157) were lost, with 63% occurring early post-transplant. Major causes included vascular complications, primary nonfunction, and patient death.
- Risk factors for early loss included high Child-Pugh score, prolonged anhepatic phase, and urgent transplantation. Donor age, weight ratio, blood loss, and technical graft variants were linked to late loss.
Conclusions:
- Early referral of pediatric liver transplant candidates is recommended to facilitate transplantation before advanced disease stages.
- Technical variants of liver grafts are identified as a risk factor impacting graft survival.
- Optimizing surgical procedures to minimize the anhepatic phase duration is essential for enhancing graft longevity.
Objective:
To describe the epidemiology and causes of graft loss after pediatric liver transplantation and to identify risk factors.
Summary Background Data:
Graft failure after transplantation remains an important problem. It results in patient death or retransplantation, resulting in lower survival rates.
Methods:
A series of 157 transplantations in 120 children was analyzed. Graft loss was categorized as early (within 1 month) and late (after 1 month). Risk factors were identified by analyzing recipient, donor, and transplantation variables.
Results:
Kaplan-Meier 1-month and 1-, 3-, and 5-year patient survival rates were 85%, 82%, 77%, and 71%, respectively. Graft survival rates were 71%, 64%, 59%, and 53%, respectively. Seventy-one of 157 grafts (45%) were lost: 18 (25%) by death of patients with functioning grafts and 53 (75%) by graft-related complications. Forty-five grafts (63%) were lost early after transplantation. Main causes of early loss were vascular complications, primary nonfunction, and patient death. Main cause of late graft loss was fibrosis/cirrhosis, mainly as a result of biliary complications or unknown causes. Child-Pugh score, anhepatic phase, and urgent transplantation were risk factors for early loss. Donor age, donor/recipient weight ratio, blood loss, and technical-variant liver grafts were risk factors for late loss.
Conclusions:
To prevent graft loss after pediatric liver transplantation, potential recipients should be referred early so they can be transplanted in an earlier phase of their disease. Technical-variant liver grafts are risk factors for graft survival. The logistics of the operation need to be optimized to minimize the length of the anhepatic phase.