Liver transplantation in very small infants

Area of Science:

• Pediatric Surgery
• Hepatology
• Transplantation Medicine

Background:

• Liver transplantation (LT) in infants under 5 kg is associated with higher reported morbidity and mortality.
• Over half of pediatric LT candidates are under one year old, highlighting the need for improved outcomes in this group.

Purpose of the Study:

• To evaluate the outcomes of liver transplantation in pediatric patients weighing 5 kg or less.
• To compare the survival rates of very small infants undergoing LT with those of larger pediatric recipients.

Main Methods:

• A retrospective analysis of 168 primary liver transplants performed between 1990 and 2005.
• Included 20 infants weighing 5 kg or less (2-5 kg) who underwent 23 transplants.
• Utilized whole organs in 39% and reduced/split grafts in 61%; arterial reconstruction with aortic conduits in 22%.

Main Results:

• Five-year patient survival for infants ≤5 kg was 74% and graft survival was 60%, not significantly different from larger children.
• Post-1996 improvements in technique and care led to significantly better 5-year graft and patient survival rates of 77% and 86% respectively.
• Major complications included infections (65%), with viral infections causing graft loss; rejection occurred in 25%.

Conclusions:

• Liver transplantation in infants weighing less than 5 kg is technically feasible and achieves comparable graft and patient survival to larger pediatric recipients.
• Weight alone should not be a contraindication for liver transplantation in infants.
• Advancements in surgical techniques and postoperative management have improved outcomes for this vulnerable population.