By Hendra Lukman 
Children’s Hospital Colorado (Children’s Colorado) has successfully performed its first-ever dual heart and liver transplant, a monumental achievement for its Pediatric Transplant Program and a testament to years of dedicated preparation and interdisciplinary collaboration. This complex, life-saving procedure, involving dozens of specialists and 25 multidisciplinary care teams, marks a significant advancement in pediatric organ transplantation, particularly for patients with congenital heart conditions that lead to secondary organ failure. Nationwide, only 38 pediatric patients have previously undergone such a combined heart and liver transplant, underscoring the rarity and complexity of this medical feat.
Dr. Megan Adams, surgical director of the Pediatric Liver Transplant and Kidney Transplant Programs at Children’s Colorado, expressed immense pride in the hospital’s accomplishment. "Performing Children’s Colorado’s first-ever heart and liver dual organ transplant is an amazing accomplishment for our Pediatric Transplant Program," she 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." This sentiment highlights the hospital’s long-standing commitment to providing advanced care for critically ill children.
A Lifelong Journey: Gracie’s Path to Transplant
The recipient of this groundbreaking procedure was 11-year-old Gracie Greenlaw, whose medical journey began at birth with hypoplastic left heart syndrome (HLHS). HLHS is a severe congenital heart defect where the left side of the heart is underdeveloped, rendering it incapable of effectively pumping blood to the body. Gracie’s life has been a testament to medical progress and resilience, having undergone three major open-heart surgeries before the age of three: the Norwood procedure, the Glenn shunt, and the Fontan procedure. These surgeries are designed to reroute blood flow, allowing the single functioning ventricle to circulate blood throughout the body.
While advancements in pediatric cardiology have significantly improved survival rates for children with HLHS, allowing many to reach adulthood, the long-term consequences of these complex surgical interventions can be profound. A common and serious complication is the development of Fontan-associated liver disease, which can progress to liver damage and ultimately liver failure. This delicate balance between managing a congenital heart condition and mitigating its secondary effects necessitated a comprehensive and forward-thinking approach to Gracie’s care.
The Fontan Multidisciplinary Clinic: A Model of Coordinated Care
Recognizing the unique and evolving needs of patients with single ventricle physiology, Children’s Colorado established the Fontan Multidisciplinary Clinic in 2016 as an integral part of its Single Ventricle Program. This specialized clinic exemplifies a holistic approach to pediatric care, bringing together a dedicated team of experts to provide coordinated, whole-patient management. The clinic focuses on patients with HLHS and other single ventricle conditions, such as tricuspid atresia and unbalanced common atrioventricular canal, ensuring that all aspects of their health are addressed proactively.
Gracie has been a patient within this program for years, benefiting from continuous monitoring and tailored treatment plans for both her cardiac and hepatic conditions. Her care team, including distinguished cardiologist Dr. Kathleen Simpson and experienced hepatologist Dr. Dania Brigham, worked in close collaboration to manage her complex health status. Their efforts were crucial in maintaining Gracie’s well-being and guiding the family through the decision-making process leading to the transplant.
"The Fontan is a lifesaving surgery, but the longer someone lives after the procedure, there is an increased chance of developing comorbidities," explained Dr. Simpson. "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." This statement underscores the intricate balance involved in managing Fontan circulation and its long-term sequelae.
Escalating Health Concerns and the Path to the Waitlist
Over the past year, Gracie’s health began to deteriorate, exacerbated by a persistent struggle with plastic bronchitis. This rare and serious condition, often associated with Fontan circulation, involves the formation of thick, protein-rich casts in the airways, leading to breathing difficulties and impaired oxygenation. As her symptoms worsened, coupled with the emerging signs of liver failure, Gracie’s medical team concluded that a dual heart and liver transplant was the most viable option to secure her long-term survival and improve her quality of life. In April, Gracie was officially placed on the transplant waitlist, initiating a race against time for compatible donor organs.
Meticulous Preparation for a High-Stakes Procedure
The prospect of a dual heart and liver transplant necessitated an unprecedented level of planning and coordination within Children’s Colorado. For years, various care teams had been preparing for the possibility of such a complex procedure, anticipating the unique challenges it would present. Specialists from surgery, cardiology, hepatology, anesthesiology, critical care, and numerous other disciplines convened regularly for extensive pre-transplant meetings.
These sessions were crucial for meticulously planning every aspect of the operation, from surgical approaches to post-operative management. Key considerations included managing differences in blood volume requirements for each organ, ensuring precise electrolyte balance during the lengthy surgery, and synchronizing the implantation of two major organs. The robust support from hospital leadership was instrumental in allocating the necessary resources and personnel to facilitate this ambitious undertaking. This proactive approach ensured that when the opportunity for transplant arose, the hospital was not only prepared but poised for success.
A 16-Hour Symphony of Surgical Precision
The moment of truth arrived less than a month after Gracie was placed on the waitlist, when compatible donor organs became available through the generosity of another family’s decision to donate. The critical nature of organ transplantation, particularly for the heart, which has a limited window of viability, dictated the surgical sequence. The surgical team, led by Dr. Matthew Stone, surgical director of the Pediatric Heart Transplant Program, and congenital heart surgeon Dr. Emily Downs, commenced the heart transplant. This phase of the operation was a demanding nine-hour endeavor, requiring exceptional skill and precision.
While the heart transplant was underway, the donor liver was meticulously preserved and maintained using the TransMedics Organ Care System (OCS). This advanced technology functions as an "ex-vivo" organ support system, simulating normal physiological conditions and keeping the liver viable outside the body. The OCS allowed the heart transplant team the necessary time to complete their intricate work without compromising the integrity of the donor liver.
Following the successful completion of the heart transplant, the focus shifted to the liver. Dr. Adams and transplant surgeon Dr. Kendra Conzen then led the seven-hour liver transplant procedure. Throughout the entire 16-hour surgical marathon, seamless coordination with the anesthesiology teams was paramount to safeguarding Gracie’s physiological stability and overall health. The successful execution of this complex dual organ transplant is a testament to the collective expertise and unwavering dedication of the entire surgical and medical staff at Children’s Colorado.
Recovery and a Rebirth: Gracie’s Journey Home
The complex surgery proved to be a resounding success. Gracie’s recovery in the cardiac progressive care unit was steady, and she was discharged just over a month after her life-altering procedure. Seven months post-transplant, Gracie continues to attend regular monthly follow-up appointments, a standard practice for transplant recipients. However, the most heartwarming aspect of her recovery is her return to a semblance of normalcy: she has resumed attending school and, perhaps most joyfully, is back home, reunited with her beloved dogs.
While the medical team anticipates that Gracie, like other pediatric heart transplant recipients, may require a subsequent heart transplant later in life, the transplanted liver is expected to function optimally for the remainder of her lifetime. This outcome offers immense relief and a renewed sense of hope for Gracie and her family.
A New Era in Pediatric Transplant Care
The successful dual heart and liver transplant at Children’s Colorado represents a significant leap forward in the hospital’s capabilities and its commitment to providing cutting-edge care for critically ill children. Dr. Duncan Wilcox, Surgeon in Chief at Children’s Colorado, emphasized 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," he remarked. "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."
This milestone is not just a victory for Gracie and her family, but a beacon of hope for countless children worldwide who face life-threatening illnesses requiring complex multi-organ transplantation. It underscores the critical importance of specialized pediatric transplant programs, robust interdisciplinary collaboration, and continuous investment in advanced medical technologies. The success at Children’s Colorado is expected to pave the way for more such complex procedures, offering a lifeline to more children and solidifying its position as a leader in pediatric medical innovation. The statistical rarity of dual heart and liver transplants globally highlights the pioneering spirit of the medical teams involved and their dedication to pushing the boundaries of what is medically possible for young patients. The implications extend beyond individual patient outcomes, potentially influencing protocols and best practices for dual organ transplantation in pediatric populations.
