William Xavier Lynch, affectionately known as “Lil X,” is a happy, smiley baby who has already been through more than most people experience in a lifetime.
“You’d never know what he’s been through if you interact with him,” says his mom, Lindsey Lynch.
Lindsey and Mario’s path to parenthood hadn’t been easy. After seven rounds of fertility treatments, they decided to take a break. During that break, Lindsey discovered she was pregnant.
Then, at her anatomy scan, they learned their baby had a congenital heart condition.
Lindsey’s medical team, including Atrium Health Levine Children’s fetal heart program, closely monitored her and her baby throughout the rest of her pregnancy and she was induced at 37 weeks. Soon after Lil X was born, his parents learned he would need a heart transplant.
He spent one day in the neonatal intensive care unit before moving to the cardiovascular intensive care unit (CVICU) at Atrium Health Levine Children’s Hospital, where he would remain for months.
Lil X was diagnosed with pulmonary atresia with intact ventricular septum and right ventricular-dependent coronary circulation, a rare congenital heart condition.
“This lesion is exceedingly rare, with a reported birth incidence of three to eight per 100,000 live births,” says Dr. Gonzalo Wallis, pediatric cardiologist at Atrium Health Levine Children's Hospital.
Waiting for a new heart
Lil X was placed on the heart transplant waiting list on Nov. 20, 2025, when he was just a few weeks old.
Waiting for a donor heart can mean an extended hospital stay for children with serious heart conditions. During those months, the goal isn’t just to keep a child medically stable. The care team also works to support growth, development and overall health so the child is as strong as possible when a donor heart becomes available.
For Lil X, that meant coordinated care from the CVICU and cardiology teams at Atrium Health Levine Children's Hospital, recognized by U.S. News & World Report as a ‘Best Children's Hospital’ for pediatric cardiology and heart surgery, as well as specialists in nutrition, physical therapy, speech therapy, child life and other areas.
Wallis says that level of collaboration was especially important during Lil X’s six-month wait. His team closely monitored his vital signs, feedings and medications while also supporting the developmental needs of a baby growing up in an unusual environment.
Nutrition was another important part of preparing him for transplant.
“One of our major goals was to help Lil X grow and optimize his nutritional status while he awaited transplant,” says Dr. Solange Benjamin-Bryant, pediatric intensivist at Atrium Health Levine Children’s Hospital who cared for Lil X in the CVICU. “His mom was incredibly dedicated to providing breast milk and our nutritionist did a phenomenal job carefully fortifying his feeds to meet his needs.”
The work paid off. Lil X entered transplant in strong nutritional condition, which Benjamin-Bryant says contributed to his recovery.
The news his family had been waiting for
For six months, Lindsey knew the news that could change her son’s life might come at any moment.
“You wait for that call,” she says. “You never know when you’ll get it. I was on edge quite a lot.”
Lindsey rarely left Lil X’s side. After her maternity leave ended, she worked remotely from his hospital room. She and her husband lived at the Ronald McDonald House for much of his hospitalization and didn’t return home until after his transplant.
Because Lindsey spent so much time at the hospital, the long-awaited news didn’t arrive by phone after all.
“They came to his room and told us he’s getting his heart,” she says.
On May 19, 2026, 180 days after being placed on the transplant list and 203 days into his hospital stay, Lil X received his new heart.
The three-hour transplant operation was his first surgery, but his care didn’t end there. Two days later, he needed another heart surgery. A few days after that, he received a stent. He later had a gastrostomy tube, or G-tube, placed to help with feedings.
Through it all, Lil X had become a beloved part of the CVICU.
“We went on wagon rides around the CVICU every day,” says Lindsey. “He brought joy to the nurses on the CVICU from the second day of his life.”
After spending so many months together, the care team had become an important part of Lindsey’s life too.
“They knew him for so long and it was hard to leave,” she says. “They became my community.”
Benjamin-Bryant remembers how Lil X’s personality emerged as he grew.
“One of my favorite memories was when his mom sought me out to tell me that he was having a ‘generous smile day,’ because she knew how much joy his smiles brought to the CVICU team,” she says.
Over time, those smiles became more frequent and Lil X developed what Benjamin-Bryant describes as a “fan club” among the people caring for him.
Going home for the first time
On June 15, 2026, Lil X reached another milestone his family had been waiting for: He went home for the first time.
His care continues outside the hospital. Pediatric heart transplant patients require close follow-up from a coordinated team that may include transplant specialists, their pediatrician, dietitians, pharmacists, infectious disease specialists, psychologists and social workers.
For Lil X, life at home is already bringing new milestones. He’s sitting independently, rolling and continuing to make developmental progress.
His family and medical team know that a heart transplant requires lifelong care and that no one can predict exactly what the future will hold. For now, the focus is on helping Lil X thrive and enjoy the best possible quality of life.
Lindsey has big dreams for her son.
“I hope he’ll be unstoppable,” she says.
After spending much of Lil X’s first year navigating uncertainty, Lindsey also has advice for parents facing a similar experience: Take things one day at a time. Look for the good in everyday moments. Make space for yourself when you can and lean on the people who want to support you.
For Wallis, children like Lil X are a reminder of how resilient pediatric heart patients can be, even after extraordinary medical care.
And for Lil X’s family, after months of waiting and hoping, the opportunity to watch him grow at home is a milestone all its own.
Learn more about pediatric heart transplant care at Levine Children’s.
