Cardiology & Heart Surgery

Autonomic nervous system appears to function well regardless of mode of childbirth

Late in pregnancy, the human body carefully prepares fetuses for the rigors of life outside the protection of the womb. Levels of cortisol, a stress hormone, ramp up and spike during labor. Catecholamines, another stress hormone, also rise at birth, helping to kick start the necessary functions that the baby will need to regulate breathing, heartbeat, blood pressure and energy metabolism levels at delivery. Oxytocin surges, promoting contractions for the mother during labor and stimulating milk production after the infant is born.

These processes also can play a role in preparing the fetal brain during the transition to life outside the womb by readying the autonomic nervous system and adapting its cerebral connections. The autonomic nervous system acts like the body’s autopilot, taking in information it needs to ensure that internal organs run steadily without willful action, such as ensuring the heart beats and eyelids blink at steady intervals. Its yin, the sympathetic division, stimulates body processes while its yang, the parasympathetic division, inhibits them.

Infants born preterm have reduced autonomic function compared with their full-term peers and also face possible serious neurodevelopmental impairment later in life. But is there a difference in autonomic nervous system function for full-term babies after undergoing labor compared with infants delivered via cesarean section (C-section)?

A team from the Children’s National Inova Collaborative Research Program (CNICA) – a research collaboration between Children’s National in Washington, D.C., and Inova Women’s and Children’s Hospital in Virginia – set out to answer that question in a paper published online July 30, 2019, in Scientific Reports.

They enrolled newborns who had experienced normal, full-term pregnancies and recorded their brain function and heart performance when they were about 2 days old. Infants whose conditions were fragile enough to require observation in the neonatal intensive care unit were excluded from the study. Of 167 infants recruited for the prospective cohort study, 118 newborns had sufficiently robust data to include them in the research.  Of these newborns:

  • 62 (52.5%) were born by vaginal delivery
  • 22 (18.6%) started out with vaginal delivery but ultimately switched to C-section based on failure to progress, failed labor induction or fetal intolerance to labor
  • And 34 (28.8%) were born by elective C-section.

The CNICA research team swaddled infants for comfort and slipped electrode nets over their tiny heads to simultaneously measure heart rate variability and electrocortical function through non-invasive techniques. The team hypothesized that infants who had been exposed to labor would have enhanced autonomic tone and higher cortical electroencephalogram (EEG) power than babies born via C-section.

“In a low-risk group of babies born full-term, the autonomic nervous system and cortical systems appear to function well regardless of whether infants were exposed to labor prior to birth,” says Sarah B. Mulkey, M.D., Ph.D., a fetal–neonatal neurologist in the Division of Fetal and Transitional Medicine at Children’s National and the study’s lead author.

However, infants born by C-section following a period of labor had significantly increased accelerations in their heart rates. And the infants born by C-section during labor had significantly lower relative gamma frequency EEG at 25.2 hours old compared with the other two groups studied.

“Together these findings point to a possible increased stress response and arousal difference in infants who started with vaginal delivery and finished delivery with C-section,” Dr. Mulkey says. “There is so little published research about the neurologic impacts of the mode of delivery, so our work helps to provide a normal reference point for future studies looking at high-risk infants, including babies born preterm.”

Because the research team saw little differences in autonomic tone or other EEG frequencies when the infants were 1 day old, future research will explore these measures at different points in the newborns’ early life as well as the role of the sleep-wake cycle on heart rate variability.

In addition to Dr. Mulkey, study co-authors include Srinivas Kota, Ph.D., Rathinaswamy B. Govindan, Ph.D., Tareq Al-Shargabi, MSc, Christopher B. Swisher, BS, Laura Hitchings, BScM, Stephanie Russo, BS, Nicole Herrera, MPH, Robert McCarter, ScD, and Senior Author Adré  J. du Plessis, M.B.Ch.B., MPH, all of Children’s National; and Augustine Eze Jr., MS, G. Larry Maxwell, M.D., and Robin Baker, M.D., all of Inova Women’s and Children’s Hospital.

Financial support for research described in this post was provided by the National Institutes of Health National Center for Advancing Translational Sciences under award numbers UL1TR001876 and KL2TR001877.

Plastic leaching illustration

Plasticizer interaction with the heart

Calling an ambulance during an emergency, emailing a journal article before a 5 p.m. deadline and maintaining conditions during the fifth week of a 6-week lab study, without altering the light or temperature, requires electricity and translates into time, money and lives saved. During critical moments, we appreciate the tiny particles and ions in electric currents that power our phones, computers or laboratory equipment. We seldom think about the speed of these connections or potential disruptors when conditions are stable. The same applies to the electric currents, or electrophysiology, of our heart.

Arrhythmias affect millions of Americans but can be controlled with routine screenings and preventive care. In an intensive care setting, helping a patient maintain a steady heart rate, especially if they are at risk for cardiac complications, may support a faster recovery, shorter hospital stay, reduced health care costs and improved health outcomes, such as avoiding complications from heart failure or stroke.

A preclinical study, entitled “Plasticizer Interaction With the Heart,” appears in the July issue of Circulation: Arrhythmia and Electrophysiology and examines the role plastic exposure, akin to exposure in a medical setting, has on heart rhythm disruptions and arrhythmias.

changes in heart rhythm due to plastics

New preclinical research finds acute exposure to MEHP, a common plasticizer used in medical equipment, increases risk for alternans and arrhythmias, disruptions in heart rhythm. The images above show changes in heart rhythm, measured by slowed epicardial conduction velocity, enhanced action potential prolongation and impaired sinus node activity.

The research team, led by researchers at Children’s National Health System, discovered increased risks for irregular heart rhythms after exposing intact, in vitro heart models to 30 minutes of mono-2-ethylhexyl phthalate (MEHP), a metabolite from Di-2-ethylhexyl phthalate (DEHP). DEHP is a chemical commonly used to make plastics pliable in FDA-approved medical devices. This phthalate accounts for 40% of the weight of blood storage bags and up to 80% of the weight of tubes used in an intensive care setting, such as for assisted feeding or breathing, and for catheters used in diagnostics or to conduct minimally invasive cardiac procedures.

The team chose to study the heart’s reaction to 60 µM of MEHP, a level comparable to stored blood levels of MEHP observed in pediatric patients and in neonatal exchange transfusion procedures. They found 30-minute exposure to MEHP slowed atrioventricular conduction and increased the atrioventricular node effective refractory period. MEHP prolonged action potential duration time, enhanced action potential triangulation, increased the ventricular effective refractory period and slowed epicardial conduction velocity, which may be due to the inhibition of Nav 1.5, or sodium current.

“We chose to study the impact of MEHP exposure on cardiac electrophysiology at concentrations that are observed in an intensive care setting, since plastic medical products are known to leach these chemicals into a patient’s bloodstream,” says Nikki Gillum Posnack, Ph.D., a principal investigator with the Sheikh Zayed Institute for Pediatric Surgical Innovation at Children’s National and an assistant professor of pediatrics at the George Washington University School of Medicine and Health Sciences. “In critical conditions, a patient may have a blood transfusion, require extracorporeal membrane oxygenation, undergo cardiopulmonary bypass or require dialysis or intravenous fluid administration. All of these scenarios can lead to plastic chemical exposure. Our research team wants to investigate how these plastic chemicals can impact cardiac health.”

In this review, Dr. Posnack’s team mentions one reason for the observed changes in the preclinical heart models may be due to the structure of phthalates, which resemble hormones and can interfere with a variety of biological processes. Due to their low molecular weight, these chemicals can interact directly with ion channels, nuclear receptors and other cellular targets.

Existing epidemiological research shows associations between exposure to phthalates and adverse health outcomes, including metabolic disturbances, reproductive disorders, inflammatory conditions, neurological disorders and cardiovascular disease. This is the first study to examine the link between cardiac electrophysiology in intact hearts and exposure to MEHP, comparable to levels observed in an ICU.

Dr. Posnack’s team previously found DEHP reduced cellular electrical coupling in cardiomyocyte cell models, which slowed conduction velocity and produced an arrhythmogenic phenotype. A microarray analysis found heart cells treated with DEHP led to mRNA changes in genes responsible for contracting and calcium handling. Another preclinical study showed DEHP altered nervous system regulation of the cardiovascular system. Future studies to expand on this research may include the use of larger preclinical models or human assessments. For the latter, stem cell-derived cardiomyocytes can be used to compare the safety profile of plastic chemicals with potential alternatives.

An accompanying editorial, entitled “Shocking Aspects of Nonconductive Plastics,” authored by cardiology researchers at the University of Wisconsin-Madison, puts this novel research into perspective. Like Dr. Posnack, the team notes that while the clinical impact plasticizers have on heart health still needs to be determined, the work contributes to compelling data among multiple researchers and shows DEHP and MEHP are not inert substances.

“Toxic plasticizers in children’s toys and baby products hit public headlines 20 years ago, but exposure to these compounds is up to 25x higher in patients undergoing complex medical procedures,” write the University of Wisconsin-Madison researchers. “We readily (and unknowingly) administer these compounds, and at times in high quantity, to some of our most vulnerable patients. This work highlights the need for further investigation into short and long-term plasticizer exposure on cardiac electrophysiology.”

The Agency for Toxic Substances and Disease Registry (ATSDR), part of the Centers for Disease Control and Prevention (CDC), released a public health statement about DEHP in 2002, noting more research in humans is needed to issue formal warnings against this phthalate.

ATSDR states there is no conclusive evidence about the adverse health effects of children exposed to DEHP in a medical setting, such as procedures that require the use of flexible tubing to administer intravenous fluids or medication. However, the CDC statement includes limits of DEHP exposure, based on preclinical models, used to guide upper DEHP limits in consumer products, including food packaging, drinking water, and air quality in the workplace.

“It’s important to note that this was a preliminary study performed on an ex vivo model that is largely resilient to arrhythmias”, says Rafael Jaimes III, Ph.D., the first author of the study and a senior scientist at Children’s National. “Due to the nature of the design, it was somewhat alarming that we found such significant effects. I predict that electrophysiological disturbances will be more pronounced in models that more closely resemble humans. These types of models should absolutely be studied.”

“And, importantly, our results may incentivize the development and use of new products that are manufactured without phthalates,” Dr. Posnack adds.

These questions are powering Dr. Posnack and her team through a decade-long, multi-institution research investigation to understand how plastic chemicals and medical device biomaterials can impact cardiac health.

Additional study authors for this paper include Damon McCullough, B.S., Bryan Siegel, M.D., Luther Swift, Ph.D., Daniel McInerney, B.S., and James Hiebert, B.S., with the Sheikh Zayed Institute for Pediatric Surgical Innovation and Children’s National Heart Institute, part of Children’s National Health System in Washington, D.C.; Erick A. Perez-Alday, Ph.D., and Larisa G Tereshchenko, M.D., Ph.D., with the Knight Cardiovascular Institute at Oregon Health and Science University in Portland, Ore.; Javier Saiz, Ph.D., and Beatriz Trenor, Ph.D., with Ci2B-Universitat Politecnica de Valencia in Spain and Jiansong Sheng, Ph.D., from CiPA Lab, LLC, in Rockville, Md.

The study was supported by the National Institutes of Health (R00ES023477 and R01HL139472), Children’s Research Institute and Children’s National Heart Institute. NVIDIA corporation provided graphics processing, with partial support by the Direccion General de Politica Cientifica de la Generalitat Valenciana (PROMETEU2016/088).

illustration of brain showing cerebellum

Focusing on the “little brain” to rescue cognition

illustration of brain showing cerebellum

Research faculty at Children’s National in Washington, D.C., with colleagues recently published a review article in Nature Reviews Neuroscience that covers the latest research about how abnormal development of the cerebellum leads to a variety of neurodevelopmental disorders.

Cerebellum translates as “little brain” in Latin. This piece of anatomy – that appears almost separate from the rest of the brain, tucked under the two cerebral hemispheres – long has been known to play a pivotal role in voluntary motor functions, such as walking or reaching for objects, as well as involuntary ones, such as maintaining posture.

But more recently, says Aaron Sathyanesan, Ph.D., a postdoctoral research fellow at the Children’s Research Institute, the research arm of Children’s National  in Washington, D.C., researchers have discovered that the cerebellum is also critically important for a variety of non-motor functions, including cognition and emotion.

Sathyanesan, who studies this brain region in the laboratory of Vittorio Gallo, Ph.D., Chief Research Officer at Children’s National and scientific director of the Children’s Research Institute, recently published a review article with colleagues in Nature Reviews Neuroscience covering the latest research about how altered development of the cerebellum contributes to a variety of neurodevelopmental disorders.

These disorders, he explains, are marked by problems in the nervous system that arise while it’s maturing, leading to effects on emotion, learning ability, self-control, or memory, or any combination of these. They include diagnoses as diverse as intellectual disability, autism spectrum disorder (ASD), attention-deficit/hyperactivity disorder and Down syndrome.

“One reason why the cerebellum might be critically involved in each of these disorders,” Sathyanesan says, “is because its developmental trajectory takes so long.”

Unlike other brain structures, which have relatively short windows of development spanning weeks or months, the principal cells of the cerebellum – known as Purkinje cells – start to differentiate from stem cell precursors at the beginning of the seventh gestational week, with new cells continuing to appear until babies are nearly one year old.  In contrast, cells in the neocortex, a part of the brain involved in higher-order brain functions such as cognition, sensory perception and language is mostly finished forming while fetuses are still gestating in the womb.

This long window for maturation allows the cerebellum to make connections with other regions throughout the brain, such as extensive connections with the cerebral cortex, the outer layer of the cerebrum that plays a key role in perception, attention, awareness, thought, memory, language and consciousness. It also allows ample time for things to go wrong.

“Together,” Sathyanesan says, “these two characteristics are at the root of the cerebellum’s involvement in a host of neurodevelopmental disorders.”

For example, the review article notes, researchers have discovered both structural and functional abnormalities in the cerebellums of patients with ASD. Functional magnetic resonance imaging (MRI), an imaging technique that measures activity in different parts of the brain, suggests that significant differences exist between connectivity between the cerebellum and cortex in people with ASD compared with neurotypical individuals. Differences in cerebellar connectivity are also evident in resting-state functional connectivity MRI, an imaging technique that measures brain activity in subjects when they are not performing a specific task. Some of these differences appear to involve patterns of overconnectivity to different brain regions, explains Sathyanesan; other differences suggest that the cerebellums of patients with ASD don’t have enough connections to other brain regions.

These findings could clarify research from Children’s National and elsewhere that has shown that babies born prematurely often sustain cerebellar injuries due to multiple hits, including a lack of oxygen supplied by infants’ immature lungs, he adds. Besides having a sibling with ASD, premature birth is the most prevalent risk factor for an ASD diagnosis.

The review also notes that researchers have discovered structural changes in the cerebellums of patients with Down syndrome, who tend to have smaller cerebellar volumes than neurotypical individuals. Experimental models of this trisomy recapitulate this difference, along with abnormal connectivity to the cerebral cortex and other brain regions.

Although the cerebellum is a pivotal contributor toward these conditions, Sathyanesan says, learning more about this brain region helps make it an important target for treating these neurodevelopmental disorders. For example, he says, researchers are investigating whether problems with the cerebellum and abnormal connectivity could be lessened through a non-invasive form of brain stimulation called transcranial direct current stimulation or an invasive one known as deep brain stimulation. Similarly, a variety of existing pharmaceuticals or new ones in development could modify the cerebellum’s biochemistry and, consequently, its function.

“If we can rescue the cerebellum’s normal activity in these disorders, we may be able to alleviate the problems with cognition that pervade them all,” he says.

In addition to Sathyanesan and Senior Author Gallo, Children’s National study co-authors include Joseph Scafidi, D.O., neonatal neurologist; Joy Zhou and Roy V. Sillitoe, Baylor College of Medicine; and Detlef H. Heck, of University of Tennessee Health Science Center.

Financial support for research described in this post was provided by the National Institute of Neurological Disorders and Stroke under grant numbers 5R01NS099461, R01NS089664, R01NS100874, R01NS105138 and R37NS109478; the Hamill Foundation; the Baylor College of Medicine Intellectual and Developmental Disabilities Research Center under grant number U54HD083092; the University of Tennessee Health Science Center (UTHSC) Neuroscience Institute; the UTHSC Cornet Award; the National Institute of Mental Health under grant number R01MH112143; and the District of Columbia Intellectual and Developmental Disabilities Research Center under grant number U54 HD090257.

spectrometer output

Understanding low cardiac output after surgery

spectrometer output

Rafael Jaimes, Ph.D., created an algorithm that is being tested in a pre-clinical model to characterize the light absorbance spectrum from different heart regions using a spectrometer.

After intense cardiac surgery, sometimes a patient’s heart is unable to effectively deliver oxygenated blood and nutrients throughout the recovering body. Known as inadequate or low cardiac output, the condition occurs in about a quarter of patients following surgery with cardiopulmonary bypass, including young children who require complex procedures to correct congenital heart defects at Children’s National Health System.

Researchers at the Sheikh Zayed Institute for Pediatric Surgical Innovation are exploring several facets of this challenge, with the goal of better understanding post-operative recovery trajectories in pediatric patients. Rafael Jaimes, Ph.D., a staff scientist at the institute, leads this work to identify when and how low cardiac output occurs, pinpoint the physical hallmarks of this condition and use that information to prevent long term damage and complications after surgery, including cardiac arrest.

“More research needs to be done to understand the cause of this overarching and multi-faceted syndrome,” says Dr. Jaimes. “I’m interested in understanding how metabolic insufficiency contributes to this condition, and also exploring how we can use current imaging and diagnostic tools to measure, track and treat the insufficiencies that contribute to low cardiac output.”

Tracking inadequate oxygen and nutrient delivery to the parts of the heart that have been repaired is one avenue under exploration. Currently, a cardiac-specific real-time device to measure the oxygen state of the heart, while a patient is in post-operative critical care, is under development.

The heart’s complexity has made using current oxygen measurement devices, such as spectrometers, very difficult. To date no tool exists that effectively screens out artifacts and noise to allow clear visualization. However, during his post-doctoral work, Dr. Jaimes has created a new algorithm that may be the first of its kind to accomplish this feat.

This work on low cardiac output recently received a Congenital Heart Defect Research Award, which is a collaborative program of the Children’s Heart Foundation and the American Heart Association that supports innovative research, seeking to understand and treat congenital heart defects.

A new research study will build on his previous studies by using the algorithm to characterize the absorbance spectrum from different heart regions in a pre-clinical model. The data collected will serve as the baseline for development of a prototype spectrometer software, capable of tracking changes in heart oxygenation before, during and after surgery.

The end goal is to more effectively identify when parts of the heart are deprived of oxygen and nutrients and prevent resulting impacts on cardiac metabolism and output. Doing so will decrease short term mortality and morbidity and may also improve circulation systemically, potentially reducing long term health impacts of reduced oxygenation, such as neurodevelopmental disorders.

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.

Vittorio Gallo Alpha Omega Alpha Award

Vittorio Gallo, Ph.D., inducted into Alpha Omega Alpha

Vittorio Gallo Alpha Omega Alpha Award

Vittorio Gallo, Ph.D., Chief Research Officer at Children’s National, was inducted into Alpha Omega Alpha (AΩA), a national medical honor society that since 1902 has recognized excellence, leadership and research in the medical profession.

“I think it’s great to receive this recognition. I was very excited and surprised,” Gallo says of being nominated to join the honor society.

“Traditionally AΩA membership is based on professionalism, academic and clinical excellence, research, and community service – all in the name of ‘being worthy to serve the suffering,’ which is what the Greek letters AΩA stand for,” says Panagiotis Kratimenos, M.D., Ph.D., an ΑΩΑ member and attending neonatologist at Children’s National who conducts neuroscience research under Gallo’s mentorship. Dr. Kratimenos nominated his mentor for induction.

“Being his mentee, I thought Gallo was an excellent choice for AΩΑ faculty member,” Dr. Kratimenos says. “He is an outstanding scientist, an excellent mentor and his research is focused on improving the quality of life of children with brain injury and developmental disabilities – so he serves the suffering. He also has mentored numerous physicians over the course of his career.”

Gallo’s formal induction occurred in late May 2019, just prior to the medical school graduation at the George Washington University School of Medicine & Health Sciences (GWSMHS) and was strongly supported by Jeffrey S. Akman, Vice President for Health Affairs and Dean of the university’s medical school.

“I’ve been part of Children’s National and in the medical field for almost 18 years. That’s what I’m passionate about: being able to enhance translational research in a clinical environment,” Gallo says. “In a way, this recognition from the medical field is a perfect match for what I do. As Chief Research Officer at Children’s National, I am charged with continuing to expand our research program in one of the top U.S. children’s hospitals. And, as Associate Dean for Child Health Research at GWSMHS, I enhance research collaboration between the two institutions.”

Dr. Anitha John, third from right, director of the Washington Adult Congenital Heart Program, hosts the eighth-annual “Adult Congenital Heart Disease in the 21st Century” conference

CME spotlight: Treating adult congenital heart disease

Dr. Anitha John, third from right, director of the Washington Adult Congenital Heart Program, hosts the eighth-annual “Adult Congenital Heart Disease in the 21st Century” conference

Dr. Anitha John, third from right, director of the Washington Adult Congenital Heart Program, hosts the eighth-annual “Adult Congenital Heart Disease in the 21st Century” conference, which takes place Oct. 4-5, 2019.

A two-day continuing medical education (CME) conference for physicians and clinicians treating patients with adult congenital heart disease (ACHD) takes place Oct. 4-5, 2019, at the Bethesda Marriott in Bethesda, Maryland.

The eighth-annual conference, “Adult Congenital Heart Disease in the 21st Century,” hosted by Children’s National Health System and MedStar Washington Hospital Center provides a comprehensive review of the evaluation, diagnosis and management of ACHD, including guidelines to help ACHD patients manage a healthy pregnancy and clinical guidance about the progression of congenital heart disease (CHD) treatment from adolescence through adulthood.

Two tracks accommodate these themes, with the first focusing on a multidisciplinary approach clinicians can use to help ACHD patients assess risks for pregnancy complications, while planning and managing a healthy pregnancy, with input from cardiologists, anesthesiologists and maternal fetal medicine specialists. The second focuses on cardiac defects, starting with anatomical cardiac lessons with 3D heart models, then moves to imaging review, examining echocardiograms and MRI’s, and ends with clinical management review.

“This conference brings the best science and the most innovative approaches to treatment with questions doctors receive in the exam room,” says Anitha John, M.D., Ph.D., the conference organizer and director of the Washington Adult Congenital Heart program at Children’s National. “We’re inviting patients to join the afternoon of the second day of the CME conference again this year to support shared knowledge of these concepts, which supports lifelong treatment and education.”

Dr. John planned this year’s conference with the November 6 ACHD board exams in mind, integrating topics that will appear on the third ACHD certification exam issued by the American Board of Internal Medicine.

At this year’s CME conference, more than a dozen faculty members, including several physicians and nurses from Children’s National, will guide lectures to help attendees meet 13 objectives, from understanding the prevalence of congenital heart disease and its complications to learning about when surgical interventions and referrals to specialists are necessary.

Attendees will review new and innovative PAH therapies, mechanical support therapies, catheter-based interventional procedures and appraise the use of pacemaker and defibrillator therapy among adults with CHD.

Patients and families attending the patient sessions, held from 12:30 to 3:45 p.m. on Saturday, October 5, have a chance to participate in three sessions that support the medical and social needs of ACHD patients. Topics range from workshops that address the neurodevelopment and psychosocial factors of living with a congenital heart defect to sessions that focus on reproductive options for patients and personalized lifestyle recommendations, including fitness and exercise guidelines.

“To support cardiovascular health throughout the lifespan, it helps to educate patients about their heart’s structure and unique needs,” notes Dr. John. “We want to spark a dialogue now and have future conversations with patients, especially while they are young.”

The American College of Cardiology/American Heart Association Task Force on Clinical Practice Guidelines updated ACHD treatment recommendations in August 2018, the first time in 10 years, and many of these guidelines manifest as panel discussions and interactive lectures presented at the 2019 Adult Congenital Heart Disease in the 21st Century conference.

Attendees can receive up to 12.5 credits from the Accreditation Council for Continuing Medical Education, the Accreditation Council for Pharmacy Education, the American Nurses Credentialing Center and the American Academy of PAs.

Those interested in starting their own ACHD program can attend an evening symposium, entitled “ACHD Program Building 101,” hosted by representatives from the Mid-Atlantic ACHD Regional Group. Topics in the six-session panel range from managing ACHD patients in a pediatric hospital setting to the role of clinical nurse coordinators in ACHD care.

To learn more about or to register for the conference, visit CE.MedStarHealth.org/ACHD. You can also listen to an interview with Dr. Anitha John about the upcoming Adult Congenital Heart Disease (ACHD) conference.

newborn in incubator

In HIE lower heart rate variability signals stressed newborns

newborn in incubator

In newborns with hypoxic-ischemic encephalopathy (HIE), lower heart rate variability correlates with autonomic manifestations of stress shortly after birth, underscoring the value of this biomarker, according to Children’s research presented during the Pediatric Academic Societies 2019 Annual Meeting.

Tethered to an array of machines that keep their bodies nourished, warm and alive, newborns with health issues can’t speak. But Children’s research teams are tapping into what the machinery itself says, looking for insights into which vulnerable infants are most in need of earlier intervention.

“Heart rate variability – or the variation between heartbeats – is a sign of health. Our autonomic nervous system constantly sends signals to adjust our heart rate under normal conditions. We can measure heart rate variability non-invasively, providing a way to detect potential problems with the autonomic nervous system as a sensitive marker of health in critically ill newborns,” says An N. Massaro, M.D., co-Director of Research for the Division of Neonatology at Children’s National, and the study’s senior author. “We’re looking for validated markers of brain injury in babies with HIE, and our study helps to support heart rate variability as one such valuable physiological biomarker.”

In most newborns, the autonomic nervous system reliably and automatically receives information about the body and the outside world and, in response, controls essential functions like blood pressure, body temperature, how quickly the baby breathes and how rapidly the newborn’s heart beats. The sympathetic part stimulates body processes, while the parasympathetic part inhibits body processes. When the nervous system’s internal auto-pilot falters, babies can suffer.

The Children’s team enrolled infants with HIE in the prospective, observational study. (HIE is brain damage that occurs with full-term babies who experience insufficient blood and oxygen flow to the brain around the time they are born.) Fifteen percent had severe encephalopathy. Mean age of babies in the observational study was 38.9 weeks gestation. Their median Apgar score at five minutes was 3; the 0-9 Apgar range indicates how ready newborns are for the rigors of life outside the womb.

The team analyzed heart rate variability metrics for three time periods:

  • The first 24 to 27 hours of life
  • The first three hours after babies undergoing therapeutic cooling were rewarmed and
  • The first three hours after babies’ body temperature had returned to normal.

They correlated the relationship between heart rate variability for 68 infants during at least one of these time periods with the stress z-score from the NICU Network Neurobehavioral Scale. The scale is a standardized assessment of newborn’s neurobehavioral integrity. The stress summary score indicates a newborn’s overall stress response, and six test items specifically relate to autonomic function.

“Alpha exponent and root mean square in short timescales, root mean square in long timescales, as well as low and high frequency powers positively correlated with stress scores and, even after adjusting for covariates, remained independently associated at 24 hours,” says Allie Townsend, the study’s lead author.

Pediatric Academic Societies 2019 Annual Meeting presentation

  • “Heart rate variability (HRV) measures of autonomic nervous system (ANS) function relates to neonatal neurobehavioral manifestations of stress in newborn with hypoxic-ischemic encephalopathy (HIE).”
    • Monday, April 29, 2019, 5:45 p.m. (EST)

Allie Townsend, lead author; Rathinaswamy B. Govindan, Ph.D., staff scientist, Advanced Physiological Signals Processing Lab and co-author; Penny Glass, Ph.D., director, Child Development Program and co-author; Judy Brown, co-author; Tareq Al-Shargabi, M.S., co-author; Taeun Chang, M.D., director, Neonatal Neurology and Neonatal Neurocritical Care Program and co-author; Adré J. du Plessis, M.B.Ch.B., MPH, chief of the Division of Fetal and Transitional Medicine and co-author; An N. Massaro, M.D., co-Director of Research for the Division of Neonatology and senior author, all of Children’s National.

Billie Lou Short and Kurt Newman at Research and Education Week

Research and Education Week honors innovative science

Billie Lou Short and Kurt Newman at Research and Education Week

Billie Lou Short, M.D., received the Ninth Annual Mentorship Award in Clinical Science.

People joke that Billie Lou Short, M.D., chief of Children’s Division of Neonatology, invented extracorporeal membrane oxygenation, known as ECMO for short. While Dr. Short did not invent ECMO, under her leadership Children’s National was the first pediatric hospital to use it. And over decades Children’s staff have perfected its use to save the lives of tiny, vulnerable newborns by temporarily taking over for their struggling hearts and lungs. For two consecutive years, Children’s neonatal intensive care unit has been named the nation’s No. 1 for newborns by U.S. News & World Report. “Despite all of these accomplishments, Dr. Short’s best legacy is what she has done as a mentor to countless trainees, nurses and faculty she’s touched during their careers. She touches every type of clinical staff member who has come through our neonatal intensive care unit,” says An Massaro, M.D., director of residency research.

For these achievements, Dr. Short received the Ninth Annual Mentorship Award in Clinical Science.

Anna Penn, M.D., Ph.D., has provided new insights into the central role that the placental hormone allopregnanolone plays in orderly fetal brain development, and her research team has created novel experimental models that mimic some of the brain injuries often seen in very preterm babies – an essential step that informs future neuroprotective strategies. Dr. Penn, a clinical neonatologist and developmental neuroscientist, “has been a primary adviser for 40 mentees throughout their careers and embodies Children’s core values of Compassion, Commitment and Connection,” says Claire-Marie Vacher, Ph.D.

For these achievements, Dr. Penn was selected to receive the Ninth Annual Mentorship Award in Basic and Translational Science.

The mentorship awards for Drs. Short and Penn were among dozens of honors given in conjunction with “Frontiers in Innovation,” the Ninth Annual Research and Education Week (REW) at Children’s National. In addition to seven keynote lectures, more than 350 posters were submitted from researchers – from high-school students to full-time faculty – about basic and translational science, clinical research, community-based research, education, training and quality improvement; five poster presenters were showcased via Facebook Live events hosted by Children’s Hospital Foundation.

Two faculty members won twice: Vicki Freedenberg, Ph.D., APRN, for research about mindfulness-based stress reduction and Adeline (Wei Li) Koay, MBBS, MSc, for research related to HIV. So many women at every stage of their research careers took to the stage to accept honors that Naomi L.C. Luban, M.D., Vice Chair of Academic Affairs, quipped that “this day is power to women.”

Here are the 2019 REW award winners:

2019 Elda Y. Arce Teaching Scholars Award
Barbara Jantausch, M.D.
Lowell Frank, M.D.

Suzanne Feetham, Ph.D., FAA, Nursing Research Support Award
Vicki Freedenberg, Ph.D., APRN, for “Psychosocial and biological effects of mindfulness-based stress reduction intervention in adolescents with CHD/CIEDs: a randomized control trial”
Renee’ Roberts Turner for “Peak and nadir experiences of mid-level nurse leaders”

2019-2020 Global Health Initiative Exploration in Global Health Awards
Nathalie Quion, M.D., for “Latino youth and families need assessment,” conducted in Washington
Sonia Voleti for “Handheld ultrasound machine task shifting,” conducted in Micronesia
Tania Ahluwalia, M.D., for “Simulation curriculum for emergency medicine,” conducted in India
Yvonne Yui for “Designated resuscitation teams in NICUs,” conducted in Ghana
Xiaoyan Song, Ph.D., MBBS, MSc, “Prevention of hospital-onset infections in PICUs,” conducted in China

Ninth Annual Research and Education Week Poster Session Awards

Basic and Translational Science
Faculty: Adeline (Wei Li) Koay, MBBS, MSc, for “Differences in the gut microbiome of HIV-infected versus HIV-exposed, uninfected infants”
Faculty: Hayk Barseghyan, Ph.D., for “Composite de novo Armenian human genome assembly and haplotyping via optical mapping and ultra-long read sequencing”
Staff: Damon K. McCullough, BS, for “Brain slicer: 3D-printed tissue processing tool for pediatric neuroscience research”
Staff: Antonio R. Porras, Ph.D., for “Integrated deep-learning method for genetic syndrome screening using facial photographs”
Post docs/fellows/residents: Lung Lau, M.D., for “A novel, sprayable and bio-absorbable sealant for wound dressings”
Post docs/fellows/residents: Kelsey F. Sugrue, Ph.D., for “HECTD1 is required for growth of the myocardium secondary to placental insufficiency”
Graduate students: Erin R. Bonner, BA, for “Comprehensive mutation profiling of pediatric diffuse midline gliomas using liquid biopsy”
High school/undergraduate students: Ali Sarhan for “Parental somato-gonadal mosaic genetic variants are a source of recurrent risk for de novo disorders and parental health concerns: a systematic review of the literature and meta-analysis”

Clinical Research
Faculty: Amy Hont, M.D., for “Ex vivo expanded multi-tumor antigen specific T-cells for the treatment of solid tumors”
Faculty: Lauren McLaughlin, M.D., for “EBV/LMP-specific T-cells maintain remissions of T- and B-cell EBV lymphomas after allogeneic bone marrow transplantation”

Staff: Iman A. Abdikarim, BA, for “Timing of allergenic food introduction among African American and Caucasian children with food allergy in the FORWARD study”
Staff: Gelina M. Sani, BS, for “Quantifying hematopoietic stem cells towards in utero gene therapy for treatment of sickle cell disease in fetal cord blood”
Post docs/fellows/residents: Amy H. Jones, M.D., for “To trach or not trach: exploration of parental conflict, regret and impacts on quality of life in tracheostomy decision-making”
Graduate students: Alyssa Dewyer, BS, for “Telemedicine support of cardiac care in Northern Uganda: leveraging hand-held echocardiography and task-shifting”
Graduate students: Natalie Pudalov, BA, “Cortical thickness asymmetries in MRI-abnormal pediatric epilepsy patients: a potential metric for surgery outcome”
High school/undergraduate students: Kia Yoshinaga for “Time to rhythm detection during pediatric cardiac arrest in a pediatric emergency department”

Community-Based Research
Faculty: Adeline (Wei Li) Koay, MBBS, MSc, for “Recent trends in the prevention of mother-to-child transmission (PMTCT) of HIV in the Washington, D.C., metropolitan area”
Staff: Gia M. Badolato, MPH, for “STI screening in an urban ED based on chief complaint”
Post docs/fellows/residents: Christina P. Ho, M.D., for “Pediatric urinary tract infection resistance patterns in the Washington, D.C., metropolitan area”
Graduate students: Noushine Sadeghi, BS, “Racial/ethnic disparities in receipt of sexual health services among adolescent females”

Education, Training and Program Development
Faculty: Cara Lichtenstein, M.D., MPH, for “Using a community bus trip to increase knowledge of health disparities”
Staff: Iana Y. Clarence, MPH, for “TEACHing residents to address child poverty: an innovative multimodal curriculum”
Post docs/fellows/residents: Johanna Kaufman, M.D., for “Inpatient consultation in pediatrics: a learning tool to improve communication”
High school/undergraduate students: Brett E. Pearson for “Analysis of unanticipated problems in CNMC human subjects research studies and implications for process improvement”

Quality and Performance Improvement
Faculty: Vicki Freedenberg, Ph.D., APRN, for “Implementing a mindfulness-based stress reduction curriculum in a congenital heart disease program”
Staff: Caleb Griffith, MPH, for “Assessing the sustainability of point-of-care HIV screening of adolescents in pediatric emergency departments”
Post docs/fellows/residents: Rebecca S. Zee, M.D., Ph.D., for “Implementation of the Accelerated Care of Torsion (ACT) pathway: a quality improvement initiative for testicular torsion”
Graduate students: Alysia Wiener, BS, for “Latency period in image-guided needle bone biopsy in children: a single center experience”

View images from the REW2019 award ceremony.

Beth Tarini

Getting to know SPR’s future President, Beth Tarini, M.D., MS

Beth Tarini

Quick. Name four pillar pediatric organizations on the vanguard of advancing pediatric research.

Most researchers and clinicians can rattle off the names of the Academic Pediatric Association, the American Academy of Pediatrics and the American Pediatric Society. But that fourth one, the Society for Pediatric Research (SPR), is a little trickier. While many know SPR, a lot of research-clinicians simply do not.

Over the next few years, Beth A. Tarini, M.D., MS, will make it her personal mission to ensure that more pediatric researchers get to know SPR and are so excited about the organization that they become active members. In May 2019 Dr. Tarini becomes Vice President of the society that aims to stitch together an international network of interdisciplinary researchers to improve kids’ health. Four-year SPR leadership terms begin with Vice President before transitioning to President-Elect, President and Past-President, each for one year.

Dr. Tarini says she looks forward to working with other SPR leaders to find ways to build more productive, collaborative professional networks among faculty, especially emerging junior faculty. “Facilitating ways to network for research and professional reasons across pediatric research is vital – albeit easier said than done. I have been told I’m a connector, so I hope to leverage that skill in this new role,” says Dr. Tarini, associate director for Children’s Center for Translational Research.

“I’m delighted that Dr. Tarini was elected to this leadership position, and I am impressed by her vision of improving SPR’s outreach efforts,” says Mark Batshaw, M.D., Executive Vice President, Chief Academic Officer and Physician-in-Chief at Children’s National. “Her goal of engaging potential members in networking through a variety of ways – face-to-face as well as leveraging digital platforms like Twitter, Facebook and LinkedIn – and her focus on engaging junior faculty will help strengthen SPR membership in the near term and long term.”

Dr. Tarini adds: “Success to me would be leaving after four years with more faculty – especially junior faculty – approaching membership in SPR with the knowledge and enthusiasm that they bring to membership in other pediatric societies.”

SPR requires that its members not simply conduct research, but move the needle in their chosen discipline. In her research, Dr. Tarini has focused on ensuring that population-based newborn screening programs function efficiently and effectively with fewer hiccups at any place along the process.

Thanks to a heel stick to draw blood, an oxygen measurement, and a hearing test, U.S. babies are screened for select inherited health conditions, expediting treatment for infants and reducing the chances they’ll experience long-term health consequences.

“The complexity of this program that is able to test nearly all 4 million babies in the U.S. each year is nothing short of astounding. You have to know the child is born – anywhere in the state – and then between 24 and 48 hours of birth you have to do testing onsite, obtain a specific type of blood sample, send the blood sample to an off-site lab quickly, test the sample, find the child if the test is out of range, get the child evaluated and tested for the condition, then send them for treatment. Given the time pressures as well as the coordination of numerous people and organizations, the fact that this happens routinely is amazing. And like any complex process, there is always room for improvement,” she says.

Dr. Tarini’s research efforts have focused on those process improvements.

As just one example, the Advisory Committee on Heritable Disorders in Newborns and Children, a federal advisory committee on which she serves, was discussing how to eliminate delays in specimen processing to provide speedier results to families. One possible solution floated was to open labs all seven days, rather than just five days a week. Dr. Tarini advocated for partnering with health care engineers who could help model ways to make the specimen transport process more efficient, just like airlines and mail delivery services. A more efficient and effective solution was to match the specimen pick-up and delivery times more closely with the lab’s operational times – which maximizes lab resources and shortens wait times for parents.

Conceptual modeling comes so easily for her that she often leaps out of her seat mid-sentence, underscoring a point by jotting thoughts on a white board, doing it so often that her pens have run dry.

“It’s like a bus schedule: You want to find a bus that not only takes you to your destination but gets you there on time,” she says.

Dr. Tarini’s current observational study looks for opportunities to improve how parents in Minnesota and Iowa are given out-of-range newborn screening test results – especially false positives – and how that experience might shake their confidence in their child’s health as well as heighten their own stress level.

“After a false positive test result, are there parents who walk away from newborn screening with lingering stress about their child’s health? Can we predict who those parents might be and help them?” she asks.

Among the challenges is the newborn screening occurs so quickly after delivery that some emotionally and physically exhausted parents may not remember it was done. Then they get a call from the state with ominous results. Another challenge is standardizing communication approaches across dozens of birthing centers and hospitals.

“We know parents are concerned after receiving a false positive result, and some worry their infant remains vulnerable,” she says. “Can we change how we communicate – not just what we say, but how we say it – to alleviate those concerns?”

Nickie Andescavage

To understand the preterm brain, start with the fetal brain

Nickie Andescavage

“My best advice to future clinician-scientists is to stay curious and open-minded; I doubt I could have predicted my current research interest or described the path between the study of early oligodendrocyte maturation to in vivo placental development, but each experience along the way – both academic and clinical – has led me to where I am today,” Nickie Andescavage, M.D., writes.

Too often, medical institutions erect an artificial boundary between caring for the developing fetus inside the womb and caring for the newborn whose critical brain development continues outside the womb.

“To improve neonatal outcomes, we must transform our current clinical paradigms to begin treatment in the intrauterine period and continue care through the perinatal transition through strong collaborations with obstetricians and fetal-medicine specialists,” writes Nickie Andescavage, M.D., an attending in Neonatal-Perinatal Medicine at Children’s National.

Dr. Andescavage’s commentary was published online March 25, 2019, in Pediatrics Research and accompanies recently published Children’s research about differences in placental development in the setting of placental insufficiency. Her commentary is part of a new effort by Nature Publishing Group to spotlight research contributions from early career investigators.

The placenta, an organ shared by a pregnant woman and the developing fetus, plays a critical but underappreciated role in the infant’s overall health. Under the mentorship of Catherine Limperopoulos, Ph.D., director of MRI Research of the Developing Brain, and Adré J. du Plessis, M.B.Ch.B., MPH, chief of the Division of Fetal and Transitional Medicine, Dr. Andescavage works with interdisciplinary research teams at Children’s National to help expand that evidence base.

While attending Cornell University as an undergraduate, Dr. Andescavage had an early interest in neuroscience and neurobehavior. As she continued her education by attending medical school at Columbia University, she corroborated an early instinct to work in pediatrics.

It wasn’t until the New Jersey native began pediatric residency at Children’s National that those complementary interests coalesced into a focus on brain autoregulation and autonomic function in full-term and preterm infants and imaging the brains of both groups. In normal, healthy babies the autonomic nervous system regulates heart rate, blood pressure, digestion, breathing and other involuntary activities. When these essential controls go awry, babies can struggle to survive and thrive.

“My best advice to future clinician-scientists is to stay curious and open-minded; I doubt I could have predicted my current research interest or described the path between the study of early oligodendrocyte maturation to in vivo placental development, but each experience along the way – both academic and clinical – has led me to where I am today,” Dr. Andescavage writes in the commentary.

ACC19 attendees from Children's National

ACC.19: A focus on pediatric cardiology

ACC19 attendees from Children's National

Dr. Gerard Martin, center, accepts an award before delivering the 2019 Dan G. McNamara Keynote lecture at ACC.19.

“Innovation meets tradition,” is how many attendees and journalists described the American College of Cardiology’s 68th Scientific Sessions (ACC.19), which took place March 16-18, 2019 in New Orleans, La.

Gerard Martin, M.D., F.A.A.P., F.A.C.C., F.A.H.A., a pediatric cardiologist and the medical director of Global Services at Children’s National, supported this narrative by referencing both themes in his 2019 Dan G. McNamara keynote lecture, entitled “Improved Outcomes in Congenital Heart Disease through Advocacy and Collaboration.” Dr. Martin highlighted advancements in the field of pediatric cardiology that took place over the past 15 years, while touting modern advancements – such as pulse oximetry screenings for critical congenital heart disease – that were a result of physician-led advocacy and collaboration.

Dr. Martin’s message was to continue to invest in research and technology that leads to medical breakthroughs, but to remember the power of partnerships, such as those formed by the National Pediatric Cardiology Quality Improvement Collaborative. These alliances, which generated shared protocols and infrastructure among health systems, improved interstage mortality rates between surgeries for babies born with hypoplastic left heart syndrome.

A dozen cardiologists and clinicians from the Children’s National Heart Institute also participated in CME panel discussions or delivered poster presentations to support future versions of this template, touching on early-stage innovations and multi-institution research collaborations. The themes among Children’s National Heart Institute faculty, presented to a diverse crowd of 12,000-plus professional attendees representing 108 countries, included:

Personalized guidelines:

  • Sarah Clauss, M.D., F.A.C.C., a cardiologist, presented “Unique Pediatric Differences from Adult Cholesterol Guidelines: Lipids and Preventive Cardiology,” before Charles Berul, M.D., division chief of cardiology and co-director of the Children’s National Heart Institute, presented “Unique Pediatric Differences from Adult Guidelines: Arrhythmias in Adults with Congenital Heart Disease,” in a joint symposium with the American Heart Association and the American College of Cardiology.
  • Berul, who specializes in electrophysiology, co-chaired a congenital heart disease pathway session, entitled “Rhythm and Blues: Electrophysiology Progress and Controversies in Congenital Heart Disease,” featuring components of pediatric electrophysiology, including heart block, surgical treatment of arrhythmias and sudden death risk.

Early detection:

  • Anita Krishnan, M.D., associate director of the echocardiography lab, presented “Identifying Socioeconomic and Geographic Barriers to Prenatal Detection of Hypoplastic Left Heart Syndrome and Transposition of the Great Arteries” as a moderated poster in Fetal Cardiology: Quickening Discoveries.
  • Jennifer Romanowicz, M.D., a cardiology fellow, and Russell Cross, M.D., director of cardiac MRI, presented the “Neonatal Supraventricular Tachycardia as a Presentation of Critical Aortic Coarctation” poster in FIT Clinical Decision Making: Congenital Heart Disease 2.
  • Pranava Sinha, M.D., a cardiac surgeon, presented the poster “Neuroprotective Effects of Vitamin D Supplementation in Children with Cyanotic Heart Defects: Insights from a Rodent Hypoxia Model” in Congenital Heart Disease: Therapy 2.

Coordinated care:

  • Ashraf Harahsheh, M.D., F.A.C.C., F.A.A.P., a cardiologist with a focus on hyperlipidemia and preventive cardiology, co-presented an update about BMI quality improvement (Q1) activity from the American College of Cardiology’s Adult Congenital and Pediatric Quality Network – BMI Q1 leadership panel.
  • Niti Dham, M.D., director of the cardio-oncology program, and Deepa Mokshagundam, M.D., cardiology fellow, presented the poster “Cardiac Changes in Pediatric Cancer Survivors” in Heart Failure and Cardiomyopathies: Clinical 3.
  • Nancy Klein, B.S.N., R.N., C.P.N., clinical program coordinator of the Washington Adult Congenital Heart program at Children’s National, presented the poster “Improving Completion of Advanced Directives in Adults with Congenital Heart Disease” in Risks and Rewards in Adult Congenital Heart Disease.

Innovation:

  • Jai Nahar, M.D., a cardiologist, moderated “Future Hub: Augmented Cardiovascular Practitioner: Giving Doctors and Patients a New Voice.” The session focused on technical aspects of artificial intelligence, such as language processing and conversational artificial intelligence, as well as how applications are used in patient-physician interactions.
  • Nahar also participated in a key event on the Heart-to-Heart stage, entitled “Rise of Intelligent Machines: The Potential of Artificial Intelligence in Cardiovascular Care.”

“While I enjoyed the significant representation of Children’s National faculty at the meeting and all of the presentations this year, one research finding that I found particularly compelling was Dr. Krishnan’s poster about geographical disparities in detecting congenital heart disease,” says Dr. Berul. “Her research finds obstetricians providing care to women in the lowest quartile of socioeconomic areas were twice as likely to miss a diagnosis for a critical congenital heart defect during a fetal ultrasound, compared to obstetricians providing care for women in the highest quartiles.”

Dr. Krishnan’s study was the collaborative effort of 21 centers in the United States and Canada, and investigated how socioeconomic and geographic factors affect prenatal detection of hypoplastic left heart syndrome and transposition of the great arteries.

“We studied over 1,800 patients, and chose these diseases because they require early stabilization by a specialized team at a tertiary care center,” says Dr. Krishnan, who led the research in conjunction with the Fetal Heart Society Research Collaborative. “We hope that by understanding what the barriers are, we can reduce disparities in care through education and community-based outreach.”

Dr. Kurt Newman in front of the capitol building

Kurt Newman, M.D., shares journey as a pediatric surgeon in TEDx Talk

Kurt Newman, M.D., president and chief executive officer of Children’s National, shares his poignant journey as a pediatric surgeon, offering a new perspective for approaching the most chronic and debilitating health conditions. In this independently-organized TEDx event, Dr. Newman also shares his passion for Children’s National and the need to increase pediatric innovations in medicine.

Robin Steinhorn in the NICU

Coming together as a team for the good of the baby

Robin Steinhorn in the NICU

Children’s National has a new program to care for children who have severe bronchopulmonary dysplasia, a serious complication of preterm birth.

Around the 1-year-old’s crib is a tight circle of smiling adults, and at the foot of his bed is a menagerie of plush animals, each a different color and texture and shape to spark his curiosity and sharpen his intellect.

Gone are the days a newborn with extremely complex medical needs like Elijah would transfer from the neonatal intensive care unit (NICU) to the pediatric intensive care unit and transition through a couple of other hospital units by the time he was discharged. Gone are the days when he’d see a variety of new physician faces at every stop. And gone are the days he’d be confined to his room, divorced from the sights and sounds and scents of the outside world, stimulation that helps little baby’s neural networks grow stronger.

Children’s National has a new program designed to meet the unique needs of children like Elijah who have severe bronchopulmonary dysplasia (BPD), a common complication of preterm birth.

“It’s more forward-thinking – and I mean thinking for the future of each individual baby, and it’s allowing the baby to have one team and one location to take advantage of a deep knowledge of and relationship with that baby and family,” says Robin Steinhorn, M.D. Dr. Steinhorn is senior vice president of the Center for Hospital-Based Specialties and one of Children’s multidisciplinary team members who visited Elijah’s bed twice weekly during his lengthy hospitalization and who continues to see him regularly during outpatient visits.

“The pulmonologist, the neonatologist, the respiratory therapist, the physical therapist, the dietitian, the cardiologist – we all come as a team to work together for the good of the baby,” Dr. Steinhorn adds. “We stick with these babies through thick and thin. We will stick with that baby with this team and this location until they are ready to go home – and beyond.”

BPD, a serious lung condition, mostly affects extremely low birthweight preterm babies whose lungs were designed to continue developing inside the womb until the pregnancy reaches full term. Often born months before their due dates, these extremely vulnerable newborns have immature organs, including the lungs, which are not ready for the task of breathing air. Children’s program targets infants who experience respiratory failure from BPD. The respiratory support required for these infants ranges from oxygen delivered through a nasal cannula to mechanical ventilators.

Robin Steinhorn and Colleague

“It’s more forward-thinking – and I mean thinking for the future of each individual baby, and it’s allowing the baby to have one team and one location to take advantage of a deep knowledge of and relationship with that baby and family,” says Robin Steinhorn, M.D.

About 1 percent of all preterm births are extremely low birthweight, or less than 1,500 grams. Within that group, up to 40 percent will develop BPD. While they represent a small percentage of overall births, these very sick babies need comprehensive, focused care for the first few years of their lives. And some infants with severe BPD also have pulmonary hypertension which, at Children’s National, is co-managed by cardiology and pulmonary specialists.

Children’s BPD team not only focuses on the child’s survival and medical care, they focus on the neurodevelopmental and social care that a baby needs to thrive. From enhanced nutrition to occupational and physical therapy to a regular sleep cycle, the goal is to help these babies achieve their full potential.

“These babies are at tremendous risk for long-term developmental issues. Everything we do is geared to alleviate that,” adds John T. Berger III, M.D., director of Children’s Pulmonary Hypertension Program.

“Our NICU care is more focused, comprehensive and consistent,” agrees Mariam Said, M.D., a neonatologist on the team. “We’re also optimizing the timing of care and diagnostic testing that will directly impact health outcomes.”

Leaving no detail overlooked, the team also ensures that infants have age-appropriate developmental stimuli, like toys, and push for early mobility by getting children up and out of bed and into a chair or riding in a wagon.

“The standard approach is to keep the baby in a room with limited physical or occupational therapy and a lack of appropriate stimulation,” says Geovanny Perez, M.D., a pulmonologist on the team. “A normal baby interacts with their environment inside the home and outside the home. We aim to mimic that within the hospital environment.”

Dr. Steinhorn, who had long dreamed of creating this comprehensive team care approach adds that “it’s been so gratifying to see it adopted and embraced so quickly by Children’s NICU caregivers.”

Prescription for a healthy heart: pediatric-driven partnerships

Dr. Martin and a patient share a smile after a visit at Children’s National Health System.

For pediatric cardiologists, February, National Heart Month, is a special time. We share health tips in the hospital and talk about heart health with those looking for advice, especially with patients and families impacted by congenital heart disease (CHD). It’s also a time to look back at what’s worked well in the field, while accelerating advancements for CHD treatment.

To start, congenital heart disease, a structural abnormality of the heart or of the blood vessels surrounding it, is the most common birth defect and occurs in about one in every 100 live births, affecting 40,000 babies born in the U.S. each year. One million children and 1.4 million adults in the U.S. have CHD. Over the past 15 years, pediatric cardiologists have cut mortality rates for CHD in half. Gratefully, now instead of saving children’s lives, the emphasis is on improving them. The catalyst for this paradigm shift isn’t simply due to a medical breakthrough, but is also the result of collaboration and advocacy.

Pediatric cardiologists worked together with other stakeholders – nurses, neonatologists, parents, state and federal agencies – to implement newborn screening methods in hospitals, with the introduction pulse oximetry screenings for critical congenital heart defects (CCHD). The screening, which measures blood oxygen levels in newborns, focuses on screening babies for CCHD before they leave the hospital. The concept and a national protocol for screening began with a small project in 2002, was endorsed by medical associations by 2012 and required by all states in 2018. The impact of CCHD screening of newborns is remarkable. Data published in JAMA showed a 33 percent reduction in CCHD infant deaths associated with states that required CCHD screening.

The pulse oximetry screening’s impact on the number of lives saved goes beyond identifying newborns with CCHD. Worldwide, though the detection of secondary conditions, such as hypothermia, pneumonia, and sepsis, the pulse oximetry screening is estimated to save roughly 772,000 lives by 2030.

In addition to newborn screening recommendations for CCHD, a group of cardiologists, including myself, worked for the Joint Council on Congenital Heart Disease (JCCHD) to form and support the National Pediatric Cardiology Quality Improvement Collaborative (NPC-QIC). We developed measures to see how we could improve survival rates between surgeries for infants born with hypoplastic left heart syndrome (HLHS), one of the most common and severe forms of CCHD.

Babies born with HLHS require two heart surgeries within the baby’s first six months. Babies that survived the first operation had a significant mortality rate (15 percent) and frequent growth failure, while waiting for the second operation. Our focused aims were to both decrease the death rate and improve growth in these children. We analyzed data from medical centers, utilized quality improvement principals from the Institute for Health Care Improvement, talked with doctors and families, and invited teams from across the U.S. to partner with us to put quality and safety measures into place.

We emphasized the following points:

  1. Clear communication. Parents leaving the hospital received consistent messages about CHD, the type of surgery their baby had, next steps and how to care for their child at home.
  2. Improved nutrient intake. Parents received clear guidelines about how many calories babies needed to consume, were asked to weigh their baby each day, and taught how to augment feeding.
  3. Warning signs.Parents received a list of typical infant behaviors and HLHS red flags to watch out for, such as if a baby isn’t gaining a certain amount of weight. They received monitors to measure oxygen saturation levels at home. If oxygen saturation dropped significantly or if parents noticed a problem, they called their doctor immediately.

The implementation of these procedures reduced interstage mortality rates and the number of growth failures for HLHS patients. In 2008, six centers participated in the NPC-QIC pilot. By 2018, 65 medical centers in the U.S. and Canada used these methods. Similar to the pulse oximetry screening guidelines, this new method wasn’t the result of a medical breakthrough, but the result of shared learning and shared infrastructure.

Now, we’re referring more adult congenital heart patients to board-certified adult congenital heart disease (ACHD) specialists, a better fit than internists or pediatric cardiologists. Adults with congenital heart defects should have their heart examined at least once by a specialist and those with complex needs should meet with a specialist at least every two years. More than 300 board-certified ACHD specialists practice in the U.S. and the field is growing. The third ACHD board exam takes place this year.

Over the next few decades, I hope we’ll make even more progress with understanding, diagnosing and treating CHD.

Emerging research examines genetic clues for congenital heart defects, which were once thought to account for 8 percent of cases and may now account for 30 percent of conditions. We’re working with neurologists to examine the timing and pathway of potential oxygen inefficiencies that occur as the brain develops in utero, infancy, and after neonatal surgery. We’ve come a long way, but we continue looking at new frontiers and for innovative solutions.

Fortunately, as cardiologists, we’re good at fixing problems. We work with surgeons and medical teams to repair holes in hearts, or replace them, and reroute blood from an underdeveloped left ventricle to improve circulation. For almost every heart defect, we have evidence-based solutions. However, to continue to help children worldwide, it’s imperative that we don’t forget about what works well: good science, tracking data, sharing best practices, active listening, transparency and constant collaboration.

Gerard Martin, M.D., F.A.A.P., F.A.C.C., F.A.H.A., is a cardiologist and the medical director of global services at Children’s National Health System. Dr. Martin has practiced pediatric cardiology for 34 years and is the Dan G. McNamara keynote speaker at the American College of Cardiology’s 2019 Scientific Sessions. Follow Dr. Martin on Twitter @Gerard_MD.

This article first appeared on KevinMD.com.

heart and medical equiptment

How much do you know about congenital heart defects?


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.”

Dr. Bear Bot

Advances in telemedicine start with new cardiac critical care robot

Dr. Bear Bot

Dr. Bear Bot’s “robot-only” parking space in the Cardiac ICU. Alejandro Lopez-Magallon, M.D., is featured on the robot display screen, where he drives the robot from his location in the command center, in order to visit patient rooms and capture additional medical information and connect with patients, parents, and attending nurses and physicians.

The telemedicine robot at Children’s National arrived in late August 2018 and recently completed a 90-day test period in the tele-cardiac intensive care unit (cardiac ICU) at Children’s National. The bot travels between rooms as a virtual liaison connecting patients and attending nurses and physicians with Ricardo Munoz, M.D., executive director of the telemedicine program and the division chief of critical cardiac care, and Alejandro Lopez-Magallon, M.D., a cardiologist and medical director of the telemedicine program.

Drs. Munoz and Lopez-Magallon use a nine-screen virtual command center to remotely monitor patient vitals, especially for infants and children who are recovering from congenital heart surgery, flown in for an emergency diagnostic procedure, such as a catheterization, or who are in the process of receiving a heart or kidney transplant. Instead of traveling to individual rooms to check in on the status of one patient, the doctors can now monitor multiple patients simultaneously, enhancing their ability to diagnose, care for and intervene during critical events.

If Drs. Munoz or Lopez-Magallon need to take an X-ray or further examine a patient, they drive the robot from its ‘robot-only’ parking space adjacent to the nurse’s station, and connect with attending doctors and nurses in the teaming area. The onsite clinicians accompany one of the telemedicine doctors, both of whom remain in the command center but appear virtually on the robot’s display screen, to the patient’s room to capture additional medical information and to connect with patients and families.

Over time, the telemedicine team will measure models of efficiency in the tele-cardiac ICU, such as through-put, care coordination, and standards of safety, quality and care, measured by quality of life and short- and long-term patient health outcomes. This test run will serve as a model for future command centers offering remote critical care.

Ricardo Munoz and Alejandro Lopez-Magallon

(R) Ricardo Munoz, M.D., executive director of the telemedicine program and the division chief of critical cardiac care, and Alejandro Lopez-Magallon, M.D., a cardiologist and the associate medical director of the telemedicine program in the tele-cardiac ICU command center.

“As technology and medicine advance, so do our models of telemedicine, which we call virtual care,” says Shireen Atabaki, M.D., M.P.H., an emergency medicine physician at Children’s National, who manages an ambulatory virtual health program, which enables patients to use virtual health platforms to connect with doctors, but from the comfort of their home. “We find the patient-centered platforms and this new technology saves families’ time and we’re looking forward to studying internal models to see how this can help our doctors, enabling us to do even more.”

The ongoing virtual connection program that Dr. Atabaki references launched in spring 2016 and has enabled 900 children to connect to a doctor from a computer, tablet or smart phone, which has saved families 1,600 driving hours and more than 41,000 miles over a two-year period. Through this program, virtual care is provided to children in our region by 20 subspecialists, including cardiologists, dermatologists, neurologists, urgent care doctors, geneticists, gastroenterologists and endocrinologists.

To extend the benefits of virtual communication, while saving mileage and time, Dr. Atabaki and the telemedicine team at Children’s National will partner with K-12 school systems, local hospitals and health centers and global health systems.

The Children’s National robot was named Dr. Bear Bot after a 21-day voting period with patients and staff, beating 14 other child-selected names, including SMARTy (Special Medical Access to Remote Technology), Dr. Bot and Rosie. Dr. Bear Bot celebrated with an official reveal party on Valentine’s Day, which was streamed to over 220 patients through the hospital’s closed-circuit television and radio station.

dystrophin protein

Experimental drug shows promise for slowing cardiac disease and inflammation

dystrophin protein

Duchenne muscular dystrophy (DMD) is caused by mutations in the DMD gene, which provides instructions for making dystrophin, a protein found mostly in skeletal, respiratory and heart muscles.

Vamorolone, an experimental medicine under development, appears to combine the beneficial effects of prednisone and eplerenone – standard treatments for Duchenne muscular dystrophy (DMD) – in the heart and muscles, while also showing improved safety in experimental models. The drug does so by simultaneously targeting two nuclear receptors important in regulating inflammation and cardiomyopathy, indicates a small study published online Feb. 11, 2019, in Life Science Alliance.

DMD is a progressive X-linked disease that occurs mostly in males. It is characterized by muscle weakness that worsens over time, and most kids with DMD will use wheelchairs by the time they’re teenagers. DMD is caused by mutations in the DMD gene, which provides instructions for making dystrophin, a protein found mostly in skeletal, respiratory and heart muscles.

Cardiomyopathy, an umbrella term for diseases that weaken the heart, is a leading cause of death for young adults with DMD, causing up to 50 percent of deaths in patients who lack dystrophin. A collaborative research team co-led by Christopher R. Heier, Ph.D., and Christopher F. Spurney, M.D., of Children’s National Health System, is investigating cardiomyopathy in DMD. They find genetic dystrophin loss provides “a second hit” for a specific pathway that worsens cardiomyopathy in experimental models of DMD.

“Some drugs can interact with both the mineralocorticoid receptor (MR) and glucocorticoid receptor (GR) since these two drug targets evolved from a common ancestor. However, we find these two drug targets can play distinctly different roles in heart and skeletal muscle. The GR regulates muscle inflammation, while the MR plays a key role in heart health,” says Heier, an assistant professor at Children’s National and lead study author. “In our study, the experimental drug vamorolone safely targets both the GR to treat chronic inflammation and the MR to treat the heart.”

After gauging the efficacy of various treatments in test tubes, the study team looked at whether any could mitigate negative impacts of the MR on heart health. Wild type and mdx experimental models were implanted with pumps that activated the MR. These models also received a daily oral MR antagonist (or inhibitor) drug, and either eplerenone, spironolactone or vamorolone. Of note:

  • MR activation increased kidney size and caused elevated blood pressure (hypertension).
  • Treatment with vamorolone maintained normal kidney size and prevented hypertension.
  • MR activation increased mdx heart mass and fibrosis. Vamorolone mitigated these changes.
  • MR activation decreased mdx heart function, while vamorolone prevented declines in function.
  • Daily prednisone caused negative MR- and GR-mediated side effects, such as hyperinsulinemia, whereas vamorolone safely improved heart function without these side effects.

“These findings have the potential to help current and future patients,” Heier says. “Clinicians already prescribe several of these drugs. Our new data support the use of MR antagonists such as eplerenone in protecting DMD hearts, particularly if patients take prednisone. The experimental drug vamorolone is currently in Phase IIb clinical trials and is particularly exciting for its unique potential to simultaneously treat chronic inflammation and heart pathology with improved safety.”

In addition to Heier and senior author Spurney, study co-authors include Qing Yu, Alyson A. Fiorillo, Christopher B. Tully, Asya Tucker and Davi A. Mazala, all of Children’s National; Kitipong Uaesoontrachoon and Sadish Srinivassane, AGADA Biosciences Inc.; and Jesse M. Damsker, Eric P. Hoffman and Kanneboyina Nagaraju, ReveraGen BioPharma.

Financial support for research described in this report was provided by Action Duchenne; the Clark Charitable Foundation; the Department of Defense under award W81XWH-17-1-047; the Foundation to Eradicate Duchenne; the Intellectual and Developmental Disabilities Research Center under award U54HD090257 (through the National Institutes of Health’s (NIH) Eunice Kennedy Shriver National Institute of Child Health and Human Development); and the NIH under awards K99HL130035, R00HL130035, L40AR068727 and T32AR056993.

Financial disclosure:  Co-authors employed by ReveraGen BioPharma were involved in creating this news release.