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Tiny Heart, Giant Hope: Infant Transplant Saves Baby
1 Jan
Summary
- Infant heart transplants are rare, with about 100 performed annually in the U.S.
- Dr. Maureen McKiernan led her first infant heart transplant at age 39.
- Baby Luna received a new heart in a complex six-hour surgery.

Dr. Maureen McKiernan, a 39-year-old surgeon, recently led her first infant heart transplant at NewYork-Presbyterian. The six-hour surgery involved transplanting a donor heart into Baby Luna, a procedure performed only about 100 times each year in the United States. This milestone marked a significant achievement for Dr. McKiernan, who had previously assisted in such complex operations.
The delicate surgery required extreme precision, involving the removal of Luna's failing heart and the intricate implantation of the new organ. The medical team worked against a critical time limit of 90 minutes to ensure the donor heart was successfully transplanted and began beating. Dr. McKiernan meticulously followed a 16-point procedure, navigating the challenges of working with an infant's fragile anatomy.
Luna, diagnosed with dilated cardiomyopathy, had been in end-stage heart failure, facing a grim prognosis. The transplant offered a critical lifeline, moving her from a waiting list to a chance at a future. While long-term survival remains a concern due to immunosuppression and potential rejection, the successful surgery has given Luna precious time she would not have otherwise had.




