By Hendra Lukman 
Children’s Hospital Colorado has reached a monumental milestone in pediatric transplantation, successfully completing its first-ever dual heart and liver transplant. This complex and life-saving procedure, a testament to years of meticulous planning and unparalleled multidisciplinary collaboration, involved the coordinated efforts of dozens of specialists across 25 distinct care teams. The achievement positions Children’s Colorado among a select group of institutions capable of performing such intricate organ replacements, with only 38 pediatric patients nationwide having previously undergone this combined transplant.
The groundbreaking surgery was performed on 11-year-old Gracie Greenlaw, a young patient who has navigated significant health challenges since birth. Her journey highlights the critical advancements in congenital heart defect management and the increasing complexity of care required for individuals with lifelong medical conditions. This dual transplant not only offers Gracie a renewed chance at a healthy life but also underscores Children’s Colorado’s commitment to pioneering advanced medical interventions for critically ill children.
A History of Resilience: Gracie’s Journey with Hypoplastic Left Heart Syndrome
Gracie’s medical narrative began at birth with hypoplastic left heart syndrome (HLHS), a severe congenital heart defect characterized by the underdeveloped left side of the heart. This condition means the left ventricle, the heart’s primary pumping chamber, is not formed properly, rendering it incapable of pumping blood effectively to the rest of the body. HLHS is one of the most complex congenital heart defects, often requiring a series of staged surgical interventions to reroute blood flow and enable the right ventricle to support systemic circulation.
Before her third birthday, Gracie underwent three pivotal surgeries: the Norwood procedure, the Glenn shunt, and the Fontan procedure. These operations are designed to progressively adapt the heart’s circulation to work with a single functioning ventricle. While advancements in surgical techniques and post-operative care have significantly improved survival rates for children with HLHS, allowing many to live into adulthood, these interventions can lead to significant long-term complications. Among the most serious is the development of liver damage and, in some cases, irreversible liver failure due to chronic venous congestion caused by the altered circulatory pathway.
The Fontan Multidisciplinary Clinic: A Proactive Approach to Complex Care
Recognizing the pervasive long-term challenges faced by patients with single ventricle physiology, Children’s Colorado established the Fontan Multidisciplinary Clinic in 2016. This clinic operates under the umbrella of the hospital’s Single Ventricle Program, a dedicated initiative focused on providing comprehensive, coordinated care for patients with HLHS and other conditions involving a single functional ventricle, such as tricuspid atresia and unbalanced atrioventricular canal defects.
The clinic’s philosophy centers on a "whole-patient" approach, bringing together specialists from various disciplines to address the multifaceted needs of these complex patients. This integrated care model ensures that cardiac function, liver health, pulmonary status, gastrointestinal issues, psychosocial well-being, and educational needs are continuously monitored and managed. For Gracie, this meant consistent oversight from a dedicated team, including leading cardiologists like Dr. Kathleen Simpson and expert hepatologists such as Dr. Dania Brigham. Their collaborative efforts were instrumental in managing Gracie’s condition and anticipating future complications, ultimately paving the way for the decision to pursue a dual organ transplant.
Dr. Megan Adams, surgical director of the Pediatric Liver Transplant and Kidney Transplant Programs at Children’s Colorado, emphasized the significance of this integrated care. "Performing Children’s Colorado’s first-ever heart and liver dual organ transplant is an amazing accomplishment for our Pediatric Transplant Program," Dr. Adams stated. "Thanks to years of dedication and a team committed to being the trusted leaders in pediatric transplant across our seven-state region, we’re grateful to provide this level of care to even more kids who need complex organ transplants to treat life-threatening illnesses and help them live healthy and happy lives."
The Escalation of Complications: Paving the Way for Transplant
The Fontan procedure, while life-saving, creates a unique physiological environment where prolonged survival can increase the risk of developing secondary health issues, often referred to as comorbidities. Dr. Kathleen Simpson elaborated on this phenomenon, explaining, "The Fontan is a lifesaving surgery, but the longer someone lives after the procedure, there is an increased chance of developing comorbidities. Our care team worked to keep her healthy and living a typical day-to-day life as long as possible before we determined a dual organ transplant would give her the best long-term quality of life."
In Gracie’s case, these long-term effects manifested significantly. She had been managing plastic bronchitis, a serious condition where protein-rich material accumulates in the airways, hindering respiration. Over the past year leading up to the transplant, Gracie’s symptoms associated with plastic bronchitis had worsened considerably. Concurrently, indicators of developing liver failure began to emerge, a direct consequence of the chronic venous congestion stemming from her Fontan circulation. This dual decline in organ function necessitated a swift and decisive medical response. The care team concluded that a simultaneous heart and liver transplant was the most viable option to offer Gracie a sustained and improved quality of life. Consequently, Gracie was placed on the national transplant waitlist in April.
Precision Planning for a Dual Organ Transplant
The decision to proceed with a dual heart and liver transplant initiated an intensive period of preparation. This was not a procedure undertaken lightly, nor was it a sudden development. Specialists within Children’s Colorado had been anticipating and preparing for the possibility of such a complex transplant for years. This foresight ensured that when Gracie’s condition reached a critical juncture, the hospital was exceptionally well-positioned to respond.
The planning phase involved a comprehensive and collaborative effort. Dozens of medical professionals, representing a wide array of specialties including cardiac surgery, transplant surgery, cardiology, hepatology, anesthesiology, critical care, nursing, and support services, convened regularly. These meetings were crucial for meticulously detailing every aspect of the potential surgery. Key considerations included the unique challenges of transplanting two vital organs simultaneously. This involved intricate planning around managing blood volume fluctuations, precise electrolyte balance during the prolonged procedure, and coordinating the timing of organ procurement and implantation. The hospital’s leadership provided strong backing, recognizing the strategic importance of building and maintaining such advanced surgical capabilities.
A Carefully Orchestrated 16-Hour Lifesaving Intervention
The window for organ transplantation is notoriously narrow, with donor organs having limited viability outside the body. For Gracie, the critical moment arrived less than a month after her placement on the transplant waitlist, thanks to the profound generosity of another family’s decision to donate. The availability of compatible donor organs marked the commencement of a meticulously choreographed surgical marathon.
The surgical team, led by Dr. Matthew Stone, surgical director of the Pediatric Heart Transplant Program, and congenital heart surgeon Dr. Emily Downs, began with the heart transplant. This initial phase of the procedure lasted approximately nine hours. The heart, being the organ with the most restrictive preservation time, required immediate implantation.
Crucially, while the cardiac surgery was in progress, the donor liver was not idle. It was maintained on a state-of-the-art TransMedics Organ Care System. This innovative technology is designed to perfuse the donor liver with oxygenated blood and nutrients, effectively simulating normal physiological conditions outside the body. This preservation method not only maintained the liver’s viability but also provided the cardiac surgical team with the necessary time to complete their complex work without compromising the liver’s condition.
Once the heart transplant was successfully concluded, the focus shifted to the liver. Dr. Megan Adams, alongside transplant surgeon Dr. Kendra Conzen, then undertook the liver transplant, a procedure that added another seven hours to the overall surgery. Throughout this entire 16-hour operation, seamless coordination with the anesthesiology teams was paramount. Their vigilant management of Gracie’s vital signs, fluid balance, and pain control was essential for protecting her health and ensuring the best possible outcome from such a demanding procedure.
Recovery and a Reclaimed Childhood
The success of this unprecedented dual transplant was immediately evident. Following the extensive surgery, Gracie was transferred to the cardiac progress care unit for intensive post-operative monitoring and recovery. Her progress was remarkable, and just over a month after the procedure, she was well enough to leave the critical care unit.
Seven months post-transplant, Gracie’s journey continues with monthly follow-up appointments, a standard part of the transplant recovery process. However, the most significant indicator of her improved health is her return to a semblance of normalcy. She has rejoined her classmates at school, re-engaging with her education and social life. Furthermore, she is back home, enjoying the simple pleasures of life, including the companionship of her dogs.
While the transplanted liver is expected to function optimally for the remainder of Gracie’s life, the medical team acknowledges that, as with most pediatric heart transplant recipients, Gracie will likely require a second heart transplant in the future. This is a recognized long-term consideration for individuals who receive heart transplants at a young age, as the transplanted organ has a finite lifespan.
A New Era of Transplant Capabilities at Children’s Colorado
The successful dual heart and liver transplant represents more than just a personal triumph for Gracie and her family; it signifies a profound advancement in the capabilities of Children’s Colorado. This complex procedure showcases the hospital’s exceptional expertise, the skill of its dedicated medical professionals, and the high level of specialized care it provides to its most vulnerable patients.
Dr. Duncan Wilcox, Surgeon in Chief at Children’s Colorado, articulated the broader implications of this achievement. "This procedure showcases the expertise, talent and level of care Children’s Colorado provides to our patients, including those with complex medical needs," Dr. Wilcox stated. "As the top-ranked pediatric hospital in Colorado and the Rocky Mountain region, we are proud of our leading-edge transplant care and look forward to supporting more patients who need dual organ transplants in the future."
The accomplishment places Children’s Colorado at the forefront of pediatric transplant centers, particularly within its extensive seven-state service region. It signals an enhanced capacity to manage the most challenging cases, offering hope and life-altering solutions to children facing rare and severe organ failure. This milestone is expected to inspire further innovation and solidify the hospital’s reputation as a national leader in pediatric transplantation, equipped to handle the most intricate and demanding medical interventions for the benefit of critically ill children. The integration of advanced technology, like the Organ Care System, with a deeply experienced and collaborative multidisciplinary team, sets a new benchmark for pediatric complex organ transplantation.
