Cardiac Center

Hypoplastic Left Heart Syndrome: Tassos' Story

HLHS diagnosis

Tassos is an extraordinary child for many reasons: He’s an exceptional student, a talented artist and dancer, a loving son and brother. He is also an HLHS survivor.

In 2001, when his mother, Kristen, was 18 weeks pregnant, an ultrasound tassos showed a major heart defect. Kristen was a medical resident at Yale-New Haven Hospital in Connecticut.She knew the diagnosis, hypoplastic left heart syndrome (HLHS), was a severe single ventricle heart defect. A normal heart has two upper chambers (atria) to receive blood and two lower chambers. In a single ventricle heart defect, one of the lower chambers is too small to pump correctly.

When several doctors told her and her husband, Tassos, that their baby was unlikely to survive and faced a grim future if he did, they didn’t give up hope.

The search for the best hospital to treat Tassos' HLHS

Kristen and her husband began a search for the very best hospital for their son — and soon found themselves at the Cardiac Center at The Children’s Hospital of Philadelphia (CHOP). They made the two-and-a-half hour drive and met with several doctors who told them there was plenty of hope.

Their son, still in the womb, became a patient of Jack Rychik, MD, attending cardiologist and Medical Director of the Fetal Heart Program at CHOP. This program specializes in the detection, evaluation and management of fetal heart defects prior to a baby's birth, and offers a team of leading experts in the diagnosis of fetal heart defects, such as HLHS. Five months after their first visit, Kristen delivered Tassos in Philadelphia. He was immediately transported to CHOP. Four days later, Thomas Spray, MD, Chief of Cardiothoracic Surgery at CHOP and a world renowned cardiothoracic surgeon, performed the stage I operation needed for hypoplastic left heart syndrome, known as the Norwood procedure.

Highly specialized care for HLHS survivors

Ten years later, Dr. Rychik is still their son’s cardiologist. Kristen, now an obstetrician at Yale-New Haven, and her husband, a medical researcher at Yale School of Medicine, continue to make the drive from Connecticut so Tassos can receive highly specialized care for survivors of major heart defects, such as HLHS. “We’re so fortunate to have people like Dr. Rychik and Dr. Spray two-and-a-half hours away,” Kristen says. “It’s a totally different level of knowledge and experience. It’s comforting to know that we can get in the car and in a few hours our son has expert care, the best in the world.”

Thirty years ago, nearly all babies with HLHS did not survive. Today, because of incredible advances, hypoplastic left heart syndrome survival rates have dramatically improved. Children with HLHS have three surgeries, known as staged reconstruction, to reroute the circulation of blood through the heart. After the surgeries, the heart functions as a one-sided, instead of two-sided, pump.

Experience with protein-losing enteropathy (PLE)

Tassos recovered quickly from his surgeries. He grew normally and was speaking in full sentences by a year-and-a-half. In June 2005, after gis stage III operation, known as the Fontan procedure, to treat HLHS, all was well. “He was absolutely perfect until July 2008,” his mother recalls. “For three years we hardly visited Philadelphia. Then our lives were shaken up again. I picked him up from camp in July and his legs were swollen.”

As the parents of a single ventricle survivor, they knew the cause might be a disease called protein-losing enteropathy (PLE).

Protein is one of the building blocks of the body. It is manufactured by cells and is abundant throughout the body. In some single ventricle survivors, protein begins to breach the lining of the blood vessels and leak into the intestines, where it is eliminated through the stool. The body can’t make enough protein to keep up. Symptoms include severe swelling and loss of calcium from the bones. PLE can be fatal.

Tassos’ parents immediately called Dr. Rychik. After several tests, he confirmed Tassos had PLE. Soon Tassos’ belly was also swollen. The family traveled to CHOP for cardiac catheterization, endoscopy of the gastrointestinal tract, bone scans and other tests. Dr. Rychik put Tassos on budesonide, a steroid his own research showed to be an effective treatment for PLE in single ventricle survivors. “Tassos had a dramatic response,” Kristen recalls. “We saw his body come back.”

Tassos has recovered beautifully. PLE has affected his growth: Now 9, he is small for his age. Otherwise, “He is living a very normal life,” Kristen says.

Tassos is a gifted artist and talented dancer, studying ballet, tap and jazz. Now in third grade, he is studious and has many friends. In addition to a low dose of steroid, Tassos takes a blood-thinner. “It’s been nice to have him as a little boy who can sit and draw,” his mom says. “He’s not a rough-and-tumble kid.”

Single Ventricle Survivorship Program at CHOP

As “single ventricle survivors” get older, doctors are recognizing that, while some do fine, many experience complications, including lung, liver and gastrointestinal diseases. Dr. Rychik is an international leader in research, diagnosis and treatment of single ventricle heart defects with a focus on the challenges faced by survivors. For Tassos and many others his efforts have great meaning.

Tassos visits Philadelphia every six months as a patient of the Single Ventricle Survivorship Program, led by Dr. Rychik. The program brings together doctors from different specialties to care for single ventricle survivors. One of their goals is to develop protocols for screening and treatments. Tassos sees Dr. Rychik, and a gastroenterologist and an endocrinologist with special expertise in single ventricle survivors.

The future is uncertain for survivors like Tassos. “It is something that sits with you every day and causes a lot of angst,” Kristen says. “But I remind myself that 20 years ago there wasn’t a lot of treatment at all for HLHS and now we have very good survival rates.”

The family takes heart in knowing Tassos is a patient of one of the world’s best medical teams; the experts pursuing the breakthroughs that will lead to new treatments for PLE and other diseases. “Every night we say a little prayer for all the researchers and all the doctors,” Kristen says, “that they continue to make more progress.”

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Hypoplastic Left Heart Syndrome (HLHS)

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