Medical experts warned on April 25 that a critical shortage of donor hearts is leaving many children waiting for transplants at risk, despite advances in pediatric heart care. The announcement was made during the International Society for Heart and Lung Transplantation (ISHLT) 46th Annual Meeting and Scientific Sessions.
The issue is significant because while medical progress allows more children to survive until they are eligible for a transplant, the number of available donor hearts has not increased accordingly. This imbalance means that many children die while waiting for a suitable organ.
Kevin P. Daly, MD, Pediatric Cardiologist at Boston Children's Hospital, said breaking the bottleneck in the U.S. Transplant Modernization Act would help increase the flow of donor hearts to recipients. He explained that federal contracting delays have slowed implementation of this act, which aims to shift from a categorical system to a continuous distribution model with higher priority given to children and refinements in urgency categories. "Allocation policy matters, but it cannot solve a shortage of organs," said Dr. Daly, who serves as president of the Pediatric Heart Transplant Society.
Globally, over 600 pediatric heart transplants are performed each year; however, mortality rates on waiting lists remain high. In the United States alone, more than one in six children on these lists do not survive long enough to receive an organ. Advances such as ventricular assist devices now allow critically ill children to live longer while awaiting transplantation—sometimes for months or years.
Brigitte Stiller, MD, Professor and Head of Pediatric Cardiology at University Heart Center Freiburg in Germany, described this situation as paradoxical: "We are saving children on the waiting list, but we are not finding enough donor hearts for them." She argued that changes are needed in how donor hearts are selected and used: "Scarcity in pediatric heart transplantation is not fate; it is a problem we can redesign." Stiller emphasized moving beyond seeking only 'perfect' donors since carefully selected non-ideal organs can still result in excellent outcomes.
Both speakers highlighted technological advances like organ perfusion and preservation technologies as key ways to expand available donors. Miniaturized perfusion platforms are currently being evaluated through clinical trials in the United States—a development Dr. Daly called potentially revolutionary for pediatric transplantation just as similar systems have transformed adult procedures.
Donation after circulatory death (DCD) was cited as another promising approach though its use remains limited among pediatric patients due partly to concerns about public trust: "Public trust is everything," Dr. Daly said. "If families lose confidence in the system, donation rates could fall—and that would cost lives." Clinical innovations also allow infants and young children safely receive incompatible blood type organs—a breakthrough increasing potential donors significantly.
Dr. Stiller also underscored public education about long-term positive outcomes after transplantation: many recipients grow up healthy enough to finish school or start families themselves—stories she believes encourage more people toward donation decisions: "When people see that these children become thriving adults it changes conversation...that visibility can help more families say yes." Both speakers agreed solving this crisis will require technology improvements alongside clinical innovation and new approaches toward using every possible donated heart.
