San Antonio Teen Sisters Receive Heart Transplants Six Weeks Apart
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Two teenage sisters from San Antonio, Harper Gaffney and Heidi Gaffney, recently underwent life-changing heart transplant surgeries just six weeks apart. The sisters shared a lifelong struggle with dilated cardiomyopathy, a heart muscle disease, which seemed to have little impact on their daily lives until they reached their teenage years and required intervention. This rare heart condition, which runs in their family, gradually affected their heart’s ability to pump blood effectively.
Harper, aged 15, received her long-awaited heart transplant in April, followed by her older sister, 18-year-old Heidi, who received the same life-saving call just two days after Harper returned home from the hospital. The girls had been on the transplant list for a year, waiting for suitable donor hearts to become available. Their mother, Ashley Gaffney, had also battled dilated cardiomyopathy since infancy, managing it with medications and leading a relatively normal life.
The family’s journey took an unexpected turn when Heidi was diagnosed with the same heart condition at just four months old, following a series of unexplained health issues as an infant. As the girls grew older, the genetic nature of the condition became apparent when three out of four of their quadruplet siblings were also diagnosed with dilated cardiomyopathy. The family’s optimism that medications would suffice to manage the condition was shattered when both Harper and Heidi’s health rapidly deteriorated in 2024.
After a reevaluation by doctors at Dell Children’s Hospital, the sisters were deemed in critical need of heart transplants. Harper received an LVAD device to support her failing heart temporarily, while Heidi was also placed on the transplant list. Despite facing uncertain outcomes and the urgency of their situations, the Gaffney sisters showed resilience and courage as they awaited their life-saving surgeries.
In a twist of fate, Harper was the first to receive a donor heart in April 2025, after almost a year of waiting with the LVAD. Heidi, though slightly disheartened at initially missing out, remained steadfast in supporting her sister through her surgery, and her turn for a transplant came in June. The sisters’ remarkable bond and mutual encouragement proved invaluable during their recovery process, with Heidi even referring to Harper’s transplant as a catalyst for her own procedure.
Both sisters embraced their second chance at life with gratitude and determination. Harper, now a high school freshman, and Heidi, a freshman at the University of Texas, San Antonio, are pursuing their dreams while cherishing the gift of a new heart. Heidi’s aspiration to become a pediatric cardiology nurse reflects her desire to help others facing similar challenges, drawing from her own experiences to provide empathy and understanding to young patients.
The Gaffney sisters’ inspiring journey serves as a testament to the power of resilience, family support, and medical advancements in overcoming life-threatening obstacles. Their story highlights the importance of organ donation and the transformative impact it can have on individuals and their loved ones. As they continue to heal and thrive, Harper and Heidi embody the strength and hope that emerge from facing adversity with courage and determination.