Lung retransplantation in children: appropriate when selectively applied

Area of Science:

• Pediatric Pulmonology
• Transplant Surgery
• Organ Transplantation

Background:

• Pediatric lung retransplantation (re-LTx) has historically shown lower survival rates compared to primary lung transplantation.
• Advancements in primary lung transplant survival have increased the number of pediatric patients eligible for re-LTx.
• Analysis of the United Network of Organ Sharing (UNOS) database is crucial for evaluating re-LTx effectiveness.

Purpose of the Study:

• To analyze the UNOS database for pediatric re-LTx outcomes in the United States.
• To identify factors influencing survival in pediatric lung retransplantation.
• To provide evidence-based recommendations for pediatric re-LTx strategies.

Main Methods:

• The UNOS registry was queried for pediatric re-LTx cases between May 1988 and May 2008.
• A total of 81 re-LTx cases were identified out of 802 pediatric lung transplants.
• Kaplan-Meier survival analysis was used to compare graft survival rates.

Main Results:

• The median age for re-LTx was 14 years, with obliterative bronchiolitis being the primary indication (62%).
• Overall graft survival for re-LTx was significantly worse than for primary lung transplants (graft half-life 0.9 vs 4.0 years).
• Graft survival was comparable to primary transplants when re-LTx occurred >1 year post-transplant (graft half-life 2.8 vs 4.0 years), particularly in non-ventilator-dependent patients (graft half-life 4.7 vs 4.0 years).

Conclusions:

• Pediatric lung retransplantation within the first year post-transplant is not advisable due to poor outcomes.
• Lung retransplantation after one year may be a reasonable strategy for end-stage graft failure in pediatric patients.
• Non-ventilator-dependent pediatric patients undergoing re-LTx >1 year post-transplant represent a compelling group for improved survival outcomes.