Heart transplantation in children: clinical outcome during the early postoperative period
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Published on: January 16, 2026
Estela Azeka1, José O C Auler, Miguel B Marcial
1Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil. estela_azeka9@hotmail.com
Insights
Pediatric heart transplantation shows promising short-term survival rates. However, early post-transplant deaths occurred without identifiable risk factors, highlighting the need for better rejection management in pediatric heart transplant recipients.
Area of Science:
- Cardiology
- Pediatric Surgery
- Transplantation Medicine
Background:
- Understanding transplant-related mortality is crucial for improving pediatric heart transplant survival.
- Early postoperative outcomes and risk factors in pediatric heart transplantation require further investigation.
Purpose of the Study:
- To report a single center's experience with pediatric heart transplantation.
- To identify potential risk factors and causes of death in the early postoperative period.
- To evaluate survival rates and clinical outcomes in pediatric heart transplant recipients.
Main Methods:
- Prospective longitudinal study of 51 pediatric patients undergoing heart transplantation.
- Evaluation of pretransplant risk factors including diagnosis, age, sex, weight, blood type, donor/recipient matching, ischemic time, and pre-transplant support.
- Assessment of actuarial survival, clinical outcomes, and causes of early postoperative death.
Main Results:
- Early postoperative survival (<=30 days) was 86%, with 1-year and 3-year survival at 79.3% and 76.8%, respectively.
- Seven patients died early post-transplant due to primary graft failure, rejection, or infection.
- No specific pretransplant risk factors were identified for early death, but intubation duration correlated with pretransplant conditions.
Conclusions:
- Pediatric heart transplantation can achieve promising short-term results.
- Improved rejection surveillance and treatment strategies are essential for pediatric heart transplant recipients.
- Retransplantation is associated with high perioperative mortality.
Abstract:
As improved understanding of transplant-related death should improve survival, we report a single center's experience with pediatric heart transplantation including potential risk factors and causes of death during the early postoperative period. This prospective longitudinal study involved 51 pediatric patients ranging in age from 12 days to 15.1 yr (median: 3 yr). The following pretransplant risk factors were evaluated: diagnosis, age at transplantation, recipient sex, weight and blood type, blood type match, donor/recipient sex match, weight ratio, ischemic time, recipient's status, requirement for mechanical ventilation or circulatory support, dialysis, or inotropic support at transplantation. We also determined the actuarial survival, clinical outcomes, and causes of death in this population. Survival was 86% during the early postoperative period (=30 days), 79.3% at 1 yr, and 76.8% at 3 yr. Seven patients died during the early postoperative period (primary graft failure, rejection, and infection). However, there was no difference in the frequency of any of the risk factors analyzed between these patients and those who did not experience early death. There was a correlation between the duration of intubation after transplantation and pretransplant risk factors (diagnosis, recipient status, requirement for dialysis, inotropic and mechanical ventilation support). Our findings indicate that promising short-term results can be obtained with pediatric transplantation. Although we identified no specific risk factors in this study for death, improved rejection surveillance and treatment strategies remain important goals in pediatric heart transplantation. Retransplantation had high mortality during the perioperative period.
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