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Children’s National named to U.S. News & World Report’s Best Children’s Hospitals Honor Roll

US News BadgesChildren’s National Hospital in Washington, D.C., was ranked No. 5 nationally in the U.S. News & World Report 2022-23 Best Children’s Hospitals annual rankings. This marks the sixth straight year Children’s National has made the list, which ranks the top 10 children’s hospitals nationwide. In addition, its neonatology program, which provides newborn intensive care, ranked No.1 among all children’s hospitals for the sixth year in a row.

For the twelfth straight year, Children’s National also ranked in all 10 specialty services, with seven specialties ranked in the top 10.

“In any year, it would take an incredible team to earn a number 5 in the nation ranking. This year, our team performed at the very highest levels, all while facing incredible challenges, including the ongoing pandemic, national workforce shortages and enormous stress,” said Kurt Newman, M.D., president and chief executive officer of Children’s National. “I could not be prouder of every member of our organization who maintained a commitment to our mission. Through their resilience, Children’s National continued to provide outstanding care families.”

“Choosing the right hospital for a sick child is a critical decision for many parents,” said Ben Harder, chief of health analysis and managing editor at U.S. News. “The Best Children’s Hospitals rankings spotlight hospitals that excel in specialized care.”

The annual rankings are the most comprehensive source of quality-related information on U.S. pediatric hospitals and recognizes the nation’s top 50 pediatric hospitals based on a scoring system developed by U.S. News.

The bulk of the score for each specialty service is based on quality and outcomes data. The process includes a survey of relevant specialists across the country, who are asked to list hospitals they believe provide the best care for patients with the most complex conditions.

The seven Children’s National specialty services that U.S. News ranked in the top 10 nationally are:

The other three specialties ranked among the top 50 were cardiology and heart surgery, gastroenterology and gastro-intestinal surgery, and urology.

Ashley Vela Mercedes

Staged surgical hybrid strategy changes outcome for baby born at 28 weeks with HLHS

Ashley Vela MercedesA staged, hybrid cardiac surgical strategy can give fragile infants with hypoplastic left heart syndrome (HLHS) critical time to grow and get stronger. It also gives doctors more time to understand and care for any complicating conditions before necessary open-heart surgery. Doctors at Children’s National Hospital used such a staged approach, called the “hybrid strategy,” to care for Ashley Vela Mercedes, who was born at only 28-weeks-old weighing 1.1 kilos.

Ashley, who is now a smiling and happy 18-month-old, is believed to be the smallest infant born at 28-weeks with HLHS to survive to this age. Though she will need ongoing care and future procedures, her family is grateful for the knowledge and technical expertise of her care team at Children’s National.

The hybrid program at Children’s National is led by Can Yerebakan, M.D., cardiac surgeon, and Joshua Kanter, M.D., director of Interventional Cardiology.

A hypoplastic left heart syndrome miracle

Ashley Vela Mercedes is a happy, smiling 18-month-old. She’s also a true miracle — the smallest baby in the world with HLHS to survive to this age.

Born when her mom was only 28 weeks pregnant, she was 1.1 kilos/2.4 pounds when she arrived — the size of a beanie baby stuffed animal — and her heart was about the size of a grape.

Between her premature birth and her medical issues including her critical HLHS heart condition, her parents, Ana Mercedes and Axel Vela were told that Ashley was unlikely to survive.

The Velas were frustrated, sad and scared. It started to sound like there wasn’t much hope for their tiny baby. They had always dreamed of having a family of their own. Nothing had prepared them for this.

Hope in the hybrid procedure

Their cardiologist, Jennifer Lindsey, M.D., wasn’t ready to give up either. She reached out to the team at Children’s National Hospital to see if Ashley might be considered for a new type of surgery — called a “hybrid procedure.” She hoped that this hybrid procedure might stabilize Ashley’s heart until she could grow strong enough for the open-heart surgeries she would need later.

Hybrid heart procedures blend traditional surgery and a minimally invasive interventional, or catheter-based, procedure. A stent is implanted in the newborn’s ductus arteriosus to hold it open and keep the baby’s blood flowing more efficiently. Usually, the ductus serves as a normal fetal blood vessel that increases blood flow to the mother’s placenta while in utero and closes after the baby is born, when it is not needed.

The hybrid procedure to hold open the ductus isn’t a permanent fix — it just buys the baby extra time to grow and develop before open-heart surgery to start rebuilding the heart in a more sustainable way. They are only considered an option for infants at extremely high risk for open-heart surgery. That’s also why very few congenital heart centers in the world offer them.

The hybrid team at Children’s National is led by Drs. Yerebakan and Kanter have worked together on more hybrid procedures for tiny and fragile infants than most other places. They’ve also worked with the U.S. Food and Drug Administration to safely bring a smaller and more flexible, toothpick-sized stent to the U.S. from Europe that’s made especially for use in the ductus arteriosus of special cases like Ashley.

Record-setting smallest hybrid surgery

Ashley Vela MercedesAccording to Gil Wernovsky, M.D., a cardiac intensive care doctor at Children’s National and Ashley’s Children’s National cardiologist, her birth weight was too low — she weighed 1.1 kilos or 2.4 pounds — for surgery. Her lungs also were not developed enough. She was so small, she lived in the hospital for several more weeks under the care of Dr. Lindsey. Dr. Wernovsky credits the team at Inova Children’s Hospital for providing the support Ashley needed so she could grow and develop to a place where the hybrid procedure was possible.

When she reached 1.7 kilos or 3.7 pounds, she was transported to the Cardiac Intensive Care Unit at Children’s National Hospital for her first procedure, the hybrid. At the time, she was officially the smallest baby to have a hybrid procedure at Children’s National. After the surgery, the Children’s National CICU was Ashley’s home for almost her entire first year of life.

“Landing here at Children’s was a blessing because we thought she was going to die. What has happened here is a miracle,” said Ana Mercedes. “I would like to tell Dr. Yerebakan and Dr. d’Udekem (the chief of Cardiac Surgery at Children’s National) that what they have done with my daughter is incredible, and I will never be able to fully repay them for their efforts.”

Over the next 11 months in the hospital, Ashley had many surgeries and catheterizations, countless other medical procedures and tests, and many, many ups and downs, including some very scary times when she required extracorporeal membrane oxygenation (ECMO) for critical life support.

Celebrating and thriving at home

Ashley Vela MercedesIn July 2021, Ashley went home for the first time in her life. She hasn’t needed to be hospitalized since her discharge. She’s monitored jointly by Dr. Lindsey and the Children’s National single ventricle monitoring program. That program stays in touch with families virtually three times each week. Her care team keeps up with her growth and development through telehealth. Ana Mercedes shares videos and photos of Ashley as part of her routine updates to the clinical team.

She still needs some medical support at home and will likely need additional medical interventions down the road, but for the time being, she is a more independent, happier and thriving little girl.

And she’s a miracle — she is the smallest baby in the world born with HLHS at such a small size and weight to survive to this age.

Ana Mercedes dreams of taking Ashley to the Dominican Republic one day, so they can enjoy the famous beaches and Ashley can be introduced to her heritage since that’s where Ana Mercedes is from.

“We are overall doing well. We have received support from our family and employers,” said Ana Mercedes. “We are extremely grateful to everyone who has given us a hand during this challenging time.”

The last year has been a roller coaster, but Ashley has made incredible progress and exceeded everyone’s expectations. Dr. Wernovsky notes, “Last year at Christmas time, this little girl was on her fourth catheter procedure and had been in intensive care for her entire life. One year later, she’s at home with her family and celebrating — that’s quite the Christmas miracle.”

brain network illustration

Cardiopulmonary bypass may cause significant changes to developing brain and nerve cells

brain network illustration

Cardiopulmonary bypass, more commonly known as heart-and-lung bypass, has some unique impacts on the creation and growth of brain cells in the area of a child’s brain called the subventricular zone (SVZ), according to a study in the Annals of Neurology. The SVZ is a critical area for the growth and migration of neurons and nerve cells called neuroblasts, both of which ultimately contribute to the proper development of key brain structures and functions during the early years of life.

The findings, from a study conducted in the Cardiac Surgery Research Laboratory at Children’s National Hospital, provide new insight into the cellular impacts of the cardiopulmonary bypass machine on brain growth and development for newborn infants with congenital heart disease. They will have an important role in the refinement of strategies to help protect the fragile brains of children who require lifesaving cardiac surgery with cardiopulmonary bypass immediately after birth.

Specifically, the research team found that during cardiopulmonary bypass:

  • Creation of neurons (neurogenesis) in the neonatal and infant subventricular zone is altered.
  • Migration of nerve cells, called neuroblasts, to the frontal lobe is potentially disrupted.
  • Changes to the growth and movement of neurons in the SVZ are prolonged.
  • Cortical development and expansion is impaired.
  • Specific types of neurons found only in the brain and spinal cord, called interneurons, are also affected.

The study uses an innovative pre-clinical model of the developing brain that is more anatomically and physiologically similar to human neonates and infants than those used in prior studies and in most neurological laboratory-based research.

Cardiopulmonary bypass is one of several key factors thought to cause children with congenital heart disease to sometimes demonstrate delays in the development of cognitive and motor skills. These disabilities often persist into adolescence and adulthood and can ultimately represent long-term neurocognitive disabilities. It is also believed that genetic factors, abnormal blood flow to the brain while in utero or low cardiac output after surgical procedures on the heart may contribute to these challenges.

“Unraveling cellular and molecular events during surgery using this preclinical model will allow us to design therapeutic approaches that can be restorative or reparative to the neurogenic potential of the neuronal stem precursor cells found in the subventricular zone of the neonatal or infant brain,” says Nobuyuki Ishibashi. M.D., Foglia-Hills Professor of Pediatric Cardiac Research, director of the Cardiac Surgery Research Laboratory at Children’s National and senior author on the study. “In particular, previous studies in our laboratory have shown improvement in the neurogenic activities of these precursor cells when they are treated with mesenchymal stromal cells (MSCs).”

The findings from this study further support the work already underway in the NIH-funded MeDCaP clinical trial for neonates and infants undergoing cardiac surgery using the cardiopulmonary bypass machine. That trial uses the heart and lung machine itself to deliver MSCs directly into the main arteries that carry blood to the brain.

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For fifth year in a row, Children’s National Hospital nationally ranked a top 10 children’s hospital

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Children’s National Hospital in Washington, D.C., was ranked in the top 10 nationally in the U.S. News & World Report 2021-22 Best Children’s Hospitals annual rankings. This marks the fifth straight year Children’s National has made the Honor Roll list, which ranks the top 10 children’s hospitals nationwide. In addition, its neonatology program, which provides newborn intensive care, ranked No.1 among all children’s hospitals for the fifth year in a row.

For the eleventh straight year, Children’s National also ranked in all 10 specialty services, with seven specialties ranked in the top 10.

“It is always spectacular to be named one of the nation’s best children’s hospitals, but this year more than ever,” says Kurt Newman, M.D., president and CEO of Children’s National. “Every member of our organization helped us achieve this level of excellence, and they did it while sacrificing so much in order to help our country respond to and recover from the COVID-19 pandemic.”

“When choosing a hospital for a sick child, many parents want specialized expertise, convenience and caring medical professionals,” said Ben Harder, chief of health analysis and managing editor at U.S. News. “The Best Children’s Hospitals rankings have always highlighted hospitals that excel in specialized care. As the pandemic continues to affect travel, finding high-quality care close to home has never been more important.”

The annual rankings are the most comprehensive source of quality-related information on U.S. pediatric hospitals. The rankings recognize the nation’s top 50 pediatric hospitals based on a scoring system developed by U.S. News. The top 10 scorers are awarded a distinction called the Honor Roll.

The bulk of the score for each specialty service is based on quality and outcomes data. The process includes a survey of relevant specialists across the country, who are asked to list hospitals they believe provide the best care for patients with the most complex conditions.

Below are links to the seven Children’s National specialty services that U.S. News ranked in the top 10 nationally:

The other three specialties ranked among the top 50 were cardiology and heart surgery, gastroenterology and gastro-intestinal surgery, and urology.

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Children’s National ranked a top 10 children’s hospital and No. 1 in newborn care nationally by U.S. News

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Children’s National Hospital in Washington, D.C., was ranked No. 7 nationally in the U.S. News & World Report 2020-21 Best Children’s Hospitals annual rankings. This marks the fourth straight year Children’s National has made the list, which ranks the top 10 children’s hospitals nationwide.

In addition, its neonatology program, which provides newborn intensive care, ranked No.1 among all children’s hospitals for the fourth year in a row.

For the tenth straight year, Children’s National also ranked in all 10 specialty services, with seven specialties ranked in the top 10.

“Our number one goal is to provide the best care possible to children. Being recognized by U.S. News as one of the best hospitals reflects the strength that comes from putting children and their families first, and we are truly honored,” says Kurt Newman, M.D., president and CEO of Children’s National Hospital.

“This year, the news is especially meaningful, because our teams — like those at hospitals across the country — faced enormous challenges and worked heroically through a global pandemic to deliver excellent care.”

“Even in the midst of a pandemic, children have healthcare needs ranging from routine vaccinations to life-saving surgery and chemotherapy,” said Ben Harder, managing editor and chief of Health Analysis at U.S. News. “The Best Children’s Hospitals rankings are designed to help parents find quality medical care for a sick child and inform families’ conversations with pediatricians.”

The annual rankings are the most comprehensive source of quality-related information on U.S. pediatric hospitals. The rankings recognize the nation’s top 50 pediatric hospitals based on a scoring system developed by U.S. News. The top 10 scorers are awarded a distinction called the Honor Roll.

The bulk of the score for each specialty service is based on quality and outcomes data. The process includes a survey of relevant specialists across the country, who are asked to list hospitals they believe provide the best care for patients with the most complex conditions.

Below are links to the seven Children’s National specialty services that U.S. News ranked in the top 10 nationally:

The other three specialties ranked among the top 50 were cardiology and heart surgery, gastroenterology and gastro-intestinal surgery, and urology.

Yves d'Udekem

Yves d’Udekem, M.D., Ph.D., named Chief of Cardiac Surgery and Co-Director of the Children’s National Heart Institute

Yves d'Udekem

Children’s National Hospital announced that world-class surgeon Yves d’Udekem, M.D., Ph.D., will become the next Chief of Cardiac Surgery and Co-Director of the Children’s National Heart Institute this summer.

Dr. d’Udekem is Belgian-born with Canadian and Australian citizenship and received his early training in Belgium and Toronto. As an attending cardiac surgeon in Belgium, he operated on both adults and children with congenital heart disease. Dr. d’Udekem then worked with internationally recognized heart surgeon Marc de Laval, M.D., FRCS, and others in London to train in congenital heart surgery at the Great Ormond Street Hospital for Children.

From there, he was recruited to The Royal Children’s Hospital in Melbourne, Australia, an institution that has been a leader in advancing the field of congenital heart disease. In Melbourne, Dr. d’Udekem built an outstanding reputation for clinical excellence and an exceptional academic career. He has over 300 publications and is highly cited and respected. Dr. d’Udekem obtained more than $7 million in grant funding over the past five years as the creator and leader of the highly touted Fontan Registry.

The Children’s National Cardiology team and hospital leadership have built a framework for Dr. d’Udekem to succeed and advance the legacy that has been so successfully created in cardiac surgery by Richard Jonas, M.D. Dr. Jonas is a world leader in congenital heart surgery who made significant clinical and academic advances in the field and will continue his award-winning research career at Children’s National in the laboratory focusing on neurodevelopmental outcomes for children with heart disease.

Children’s National offers a comprehensive surgical program that includes a team of experienced surgeons performing the full range of procedures available for treatment of pediatric cardiac disease and congenital heart defects. The high volume program serves neonates through adults with congenital heart disease with particular attention to neurodevelopmental outcomes.

baby cardioilogy patient

Researchers receive $2.5M grant to optimize brain development in babies with CHD

baby cardioilogy patient

Children’s National Health System researchers Richard Jonas, M.D., Catherine Bollard, M.B.Ch.B., M.D., and Nobuyuki Ishibashi, M.D., have been awarded a $2.5 million, three-year grant from the National Institutes of Health (NIH) to conduct a single-center clinical trial at Children’s National. The study will involve collaboration between the Children’s National Heart Institute, the Center for Cancer and Immunology Research, the Center for Neuroscience Research and the Sheikh Zayed Institute for Pediatric Surgical Innovation.

The goal of the study will be to optimize brain development in babies with congenital heart disease (CHD) who sometimes demonstrate delay in the development of cognitive and motor skills. This can be a result of multiple factors including altered prenatal oxygen delivery, brain blood flow and genetic factors associated with surgery including exposure to the heart lung machine.

The award will be used to complete three specific aims of a Phase 1 safety study as described in the NIH grant:

  • Aim 1: To determine the safety and feasibility of delivering allogeneic bone marrow derived mesenchymal stromal cell (BM-MSC) during heart surgery in young infants less than 3 months of age using the heart lung machine. The optimal safe dose will be determined.
  • Aim 2: To determine the impact of MSC infusion on brain structure using advanced neuroimaging and neurodevelopmental outcomes.
  • Aim 3: To determine differences in postoperative inflammatory and patho-physiological variables after MSC delivery in the infant with CHD.

“NIH supported studies in our laboratory have shown that MSC therapy may be extremely helpful in improving brain development in animal models after cardiac surgery,” says Dr. Ishibashi. “MSC infusion can help reduce inflammation including prolonged microglia activation that can occur during surgery that involves the heart lung machine.”

In addition the researchers’ studies have demonstrated that cell-based intervention can promote white matter regeneration through progenitor cells, restoring the neurogenic potential of the brain’s own stem cells that are highly important in early brain development.

The Phase 1 clinical trial is being implemented in two stages beginning with planning, regulatory documentation, training and product development. During the execution phase, the trial will focus on patient enrollment. Staff from the Cellular Therapy Laboratory, led by director Patrick Hanley, Ph.D., manufactured the BM-MSC at the Center for Cancer and Immunology Research, led by Dr. Bollard. The Advanced Pediatric Brain Imaging Laboratory, led by Catherine Limperopoulos, Ph.D., will perform MR imaging.

The phase 1 safety study will set the stage for a phase 2 effectiveness trial of this highly innovative MSC treatment aimed at reducing brain damage, minimizing neurodevelopmental disabilities and improving the postoperative course in children with CHD. The resulting improvement in developmental outcome and lessened behavioral impairment will be of enormous benefit to individuals with CHD.

Children’s National ranked No. 6 overall and No. 1 for newborn care by U.S. News

Children’s National in Washington, D.C., is the nation’s No. 6 children’s hospital and, for the third year in a row, its neonatology program is No.1 among all children’s hospitals providing newborn intensive care, according to the U.S. News Best Children’s Hospitals annual rankings for 2019-20.

This is also the third year in a row that Children’s National has been in the top 10 of these national rankings. It is the ninth straight year it has ranked in all 10 specialty services, with five specialty service areas ranked among the top 10.

“I’m proud that our rankings continue to cement our standing as among the best children’s hospitals in the nation,” says Kurt Newman, M.D., President and CEO for Children’s National. “In addition to these service lines, today’s recognition honors countless specialists and support staff who provide unparalleled, multidisciplinary patient care. Quality care is a function of every team member performing their role well, so I credit every member of the Children’s National team for this continued high performance.”

The annual rankings recognize the nation’s top 50 pediatric facilities based on a scoring system developed by U.S. News. The top 10 scorers are awarded a distinction called the Honor Roll.

“The top 10 pediatric centers on this year’s Best Children’s Hospitals Honor Roll deliver outstanding care across a range of specialties and deserve to be nationally recognized,” says Ben Harder, chief of health analysis at U.S. News. “According to our analysis, these Honor Roll hospitals provide state-of-the-art medical expertise to children with rare or complex conditions. Their rankings reflect U.S. News’ assessment of their commitment to providing high-quality, compassionate care to young patients and their families day in and day out.”

The bulk of the score for each specialty is based on quality and outcomes data. The process also includes a survey of relevant specialists across the country, who are asked to list hospitals they believe provide the best care for patients with challenging conditions.

Below are links to the five specialty services that U.S. News ranked in the top 10 nationally:

The other five specialties ranked among the top 50 were cardiology and heart surgery, diabetes and endocrinology, gastroenterology and gastro-intestinal surgery, orthopedics, and urology.

Nikki Gillum Posnack

What are the health effects of plastics?

Nikki Gillum Posnack

Nikki Posnack, Ph.D., assistant professor at the Children’s National Heart Institute, is an early-stage investigator examining the impact plastic chemical exposure has on the developing hearts of newborns and young children.

For newborns or children in the pediatric intensive care unit, plastic tubing is part of daily life. It delivers life-sustaining blood transfusions, liquid nutrition and air to breathe. But small amounts of the chemicals in the plastic of this tubing and other medical devices can leak into the patient’s bloodstream. The potential effects of these chemicals on the developing hearts of newborns and very young children are not well understood.

One researcher, Nikki Posnack, Ph.D., an assistant professor at the Children’s National Heart Institute, aims to change that and shares her early insights, funded by the National Center for Advancing Translation Science (NCATS), in an NCATS news feature.

“While plastics have revolutionized the medical field, we know chemicals in plastics leach into the body and may have unintended effects,” Posnack said. “The heart is sensitive to toxins, so we want to look at the effect of these plastics on the most sensitive patient population: kids who are recovering from heart surgery and already prone to cardiac complications.”

Fetal Cardiac Health

Managing transposition of the great arteries in the womb

Fetal Cardiac Health

Monitoring and managing fetuses’ heart health in the womb can greatly improve their chances of living long and productive lives

Over the 22 years that Mary T. Donofrio, M.D., has been practicing fetal cardiology, the field has changed radically. The goal once had been simply to offer parents an accurate diagnosis and prepare them for sometimes devastating outcomes. Now, Dr. Donofrio, who directs the Fetal Heart Program and Critical Care Delivery Program at Children’s National Health System, says specialists can follow fetuses throughout the pregnancy and manage many conditions in the womb, greatly improving their chances of living long and productive lives.

Case in point: Transposition of the great arteries, a congenital defect characterized by reversal of the heart’s two main arteries—the aorta, which distributes oxygenated blood throughout the body, and the pulmonary artery, which carries deoxygenated blood from the heart to the lungs. The single abnormality means that the oxygenated “red” blood flows back to the lungs while deoxygenated “blue” blood flows out to the body.

After birth, when the cord is clamped and the connection to the placenta severed, the baby’s cardiovascular system must adjust. If the fetal connections between the two sides of the heart no longer remain, the brain and other organs in infants with this defect are severely deprived of oxygen. The condition may be fatal if something is not done immediately to reopen the fetal connections to stabilize the circulation before surgery can be done. But if the fetal cardiologist can keep tabs on what’s happening to the heart over time and prepare a specialty team of cardiologists to treat the problem immediately after birth, chances of survival are significantly improved.

More than a decade ago, as a young attending physician, Dr. Donofrio witnessed a case that has stuck with her to this day. The baby’s diagnosis of transposition of the great arteries was not made until shortly before birth. In addition, the two fetal blood flow connections that allow blood to circulate had closed, causing severe heart failure. Although the care team performed an emergency delivery and immediate cardiac procedure, including initiation of a heart-lung machine in the delivery room to try to stabilize the circulation, the baby ultimately died due to complications from a very low oxygen level. “I always wonder what happened,” Dr. Donofrio says. “Was the baby’s heart always that bad and nobody noticed it, or did it change over time?”

In a paper published recently in the Journal of Neonatal-Perinatal Medicine, she and colleagues illustrate the dramatic transformation in care that has taken place in the 14 years since this unforgettable case. The new publication describes the case of a different fetus diagnosed at 22 weeks gestation with transposition of the great arteries in 2015 at Children’s National. Unlike many congenital heart disorders, the heart’s four chambers appear misleadingly normal at the typical mid-pregnancy ultrasound. Despite the challenging diagnosis for many obstetricians, this fetus’ heart condition was recognized early by looking at the arteries leaving the heart in addition to the chambers.

While such a defect is fatal if left untreated, Dr. Donofrio explains there are two pathways that can allow the blood to get to where it needs to go such that the circulation is stabilized and the damage mitigated. One is the fetal blood vessel known as the ductus arteriosus that typically stays open for a day or two after birth. The second is an opening between the heart’s two upper chambers, known as the foramen ovale, which usually closes upon delivery. By keeping those two pathways open, blood can cross from one side of the heart to the other, buying time in the delivery room so that babies can be stabilized before they receive surgery to permanently move the arteries back to their normal position.

In the 2015 case, Dr. Donofrio and colleagues had the chance to monitor the fetus and the fetal heart at follow-up appointments every four weeks after diagnosis. What they saw completely changed the course of their treatment plan and likely saved the baby’s life. With each ultrasound, they saw that the ductus arteriosus and the foramen ovale—the critical connections needed for survival—were gradually closing.

Dr. Donofrio noted at the fetal evaluation at 38 weeks that the structures had closed, and the heart was showing signs that it was not functioning well.  She and her team realized that the only way to save this baby was to deliver earlier than planned and to have cardiac specialists standing by ready to perform a life-saving procedure to open the connections right after the baby was separated from the placenta. The baby was delivered by Cesarean section in the cardiac operating room at Children’s. The cardiac intervention team immediately created a hole where the foramen ovale should have been by using a balloon to open the tissue that had closed. The care team also administered a prostaglandin infusion, a drug that can keep the ductus arteriosis open. This time, however, the medicine did not work. The baby was stabilized with several cardiac medications and, with little time to spare, the cardiac surgeons operated on the one-day-old baby to switch his great arteries back to the normal position, saving his life.

The baby is now 1-year-old, Dr. Donofrio says, and is healthy—a scenario that likely wouldn’t have happened had the fetal team not made the diagnosis and continually monitored the condition in the womb.

“I remember back to that first case when we were really scrambling to do everything we could at the last minute because we didn’t have the information we needed until the very end,” Dr. Donofrio says. “Now, we can spot problems early and do something about it. For me, that’s amazing. We’re making a difference, and that’s a really great thing.”

Mary Donofrio

Getting to the heart of cardiac malposition with fetal MRI

Mary T. Donofrio, MD, Director of the Fetal Heart Program and Critical Care Delivery Program at Children's National Health System

Mary T. Donofrio, M.D., Director of the Fetal Heart Program and Critical Care Delivery Program at Children’s National Health System

In a small percentage of pregnancies, the fetuses’ hearts develop in the wrong place. In the congenital anomaly known as heterotaxy syndrome that often includes a severe heart defect, the heart is often displaced from its usual position in the left chest. In other instances, the heart starts out in a normal position; however, it is pushed out of its normal position by a mass that grows in the chest cavity, by abnormal development of the lungs, or due to other causes. Although rare, babies born with cardiac malpositions associated with other congenital defects can be the most serious of all possible birth defects.

Sometimes, fetuses with these congenital problems die in the womb. Others do not survive long after birth. In some pregnancies, surgery is performed shortly after childbirth to stabilize the circulation so newborns even have a chance at life.

Correctly diagnosing these cardiac conditions during pregnancy can help doctors and parents alike make the most informed decisions and plan ahead.

However, the tools now used most often to reveal the overall anatomic details of cardiac malpositions — obstetrical ultrasound and fetal echocardiography — often don’t give a full picture. A clear view of the fetus can be obscured by the position of the fetus, insufficient amniotic fluid, or even a mother’s body habitus. Imaging techniques sometimes also have a hard time distinguishing between liver, bowel, and lung because the echogenicity of these tissues — the signature that sound waves make as they bounce back from their targets — is so similar.

“To be able to offer parents the best and most comprehensive counseling, and to begin planning for the type of intensive and multidisciplinary care that many of these babies will require, we need to have access to as much information as we can about each baby, not only relating to the heart but all the other organs as well,” says Mary T. Donofrio, M.D., a pediatric cardiologist who directs the Children’s National Health System Fetal Heart Program and Critical Care Delivery Program. “Unfortunately in some instances, obstetrical ultrasound and fetal echocardiography, the two diagnostic tools used most often in these cases, can be limited in what they tell us.”

What fetal MRI can show

An underutilized technique that gathers more details about the associated abnormalities that often accompany cardiac malposition during pregnancy is fetal magnetic resonance imaging, or fetal MRI, says Dr. Donofrio. Even though this technique is widely used to diagnose other fetal conditions, such as brain anomalies, it’s rarely used to better define the overall anatomy in cardiac malposition.

To determine whether fetal MRI is effective in complementing obstetrical ultrasound and fetal echocardiography, the current standard of care for this condition, Dr. Donofrio and colleagues took a retrospective look at all cases of cardiac malposition in which fetuses were evaluated using MRI between 2008 to 2013 at Children’s National. Their search turned up 42 cases.

Twenty-three cases had been diagnosed with obstetrical ultrasound and fetal echocardiography as having additional abnormalities beyond the heart’s changed position, and 19 had been given the diagnosis of heterotaxy syndrome. Each patient had been assigned to various known subtypes of these conditions, with some classified as having an unknown etiology for the findings.

After fetal MRI, the diagnoses of nearly one-third changed or were better delineated. Seven of the 23 cases of cardiac malposition attributed to an extra cardiac anomaly were reassigned to a cause different from the original diagnosis based on the new, more detailed information provided by fetal MRI, including three in which a complete diagnosis could not be made due to poor visualization by ultrasound. Five of the 19 cases attributed of heterotaxy were reassigned to different subgroups within this disorder or were given a different diagnosis completely after fetal MRI.

In eight of these 12 diagnoses that changed after fetal MRI, doctors were able to confirm these findings postnatally. Other cases were either lost to follow-up, pregnancy termination, or fetal demise.

The research team led by Dr. Donofrio published these results in the August 2016 issue of Prenatal Diagnosis.

Overall, she says the findings demonstrated the benefits of using fetal MRI as an adjunct to obstetrical ultrasound and fetal echocardiography. MRI offers advantages over ultrasound, she explains, including better spatial resolution, a wider field of view, and a way to see through or around maternal body fat, overlying fetal bone, or a fetus whose position is not optimal.

“Determining the etiology of cardiac malposition remains a challenging diagnosis, and the value of accurate prenatal diagnosis has been long recognized,” Donofrio and colleagues write in the study. “Ultimately, fetal MRI can assist with identifying the etiology of cardiac malposition for informative prenatal counseling and multidisciplinary planning.”

Cardiology and heart surgery update: fetal magnetic resonance imaging, chest pain

July 20, 2016 – Utility of fetal magnetic resonance imaging in assessing the fetus with cardiac malposition
Abnormal cardiac axis and/or malposition can trigger an evaluation of fetuses for congenital heart disease. A research team led by Mary T. Donofrio, MD, director of the Fetal Heart Program at Children’s National Health System, sought to examine how fetal magnetic resonance imaging (fMRI) – might complement obstetrical ultrasound or fetal echocardiography (echo) – in defining etiology. The team reviewed 42 fetuses identified as having abnormal cardiac axis and/or malposition by fetal ultrasound and echo. While 55 percent of cases (23) had extracardiac anomalies, 29 percent (12) were reassigned by fMRI. fMRI findings were confirmed in 8 of these 12 cases postnatally.

June 13, 2016 – Targeted echocardiographic screening for latent rheumatic heart disease in Northern Uganda
Echocardiographic screening to detect latent rheumatic heart disease (RHD) has the potential to reduce the burden of disease, however additional research is needed to develop sustainable public health strategies. Some 33 million people, many living in low-resource environments, have RHD. What’s more, relatives of children with latent RHD may be at risk for developing the chronic heart condition. The research team found that siblings of children who were RHD-positive were more likely to have RHD, underscoring the importance of screening brothers and sisters of a child with confirmed RHD.

April 3, 2016 – Chest pain in children – the charge implications of unnecessary referral
While pediatricians are responsible for triaging chest pain complaints, questions linger about the best approach to reassure patients whose conditions are benign as well as how to best identify patients whose chest pain warrants further evaluation and testing. The study sought to assess how many patients with chest pain were inappropriately referred and found that chest pain due to cardiac disease is very rare in children. Thus, children whose chest pain is not accompanied by cardiac red flags can be managed safely by their pediatrician.

April 2, 2016 – Hemodynamic consequences of a restrictive ductus arteriosus and foramen ovale in fetal transposition of TGA
Dextro-transposition of the great arteries (d-TGA) occurs when the position of the main pulmonary artery and the aorta – the two main arteries that carry blood out of the heart – are switched. Newborns with d-TGA are at risk for compromise due to foramen ovale (FO) closure and pulmonary vascular abnormalities. One such fetus seen at 22 weeks of gestational age had a hypermobile, unrestrictive FO and small ductus arteriosus (DA) with bidirectional flow. By the 32 week, however, the DA was small with restrictive bidirectional flow. Doppler imaging showed reversed flow in the left pulmonary artery. By the 38th gestational week, the FO was closed, the left atrium/ventricle were dilated, and the DA was tiny. Within 30 minutes after birth, a balloon atrial septostomy was performed, and the infant later underwent surgical repair.