Research Corner: Vocal Fold Movement and Silent Aspiration After Congenital Heart Surgery

Congratulations to our pediatric colleague, Christine Rappazzo,  for this wonderful addition to our evidence base related to the potential impact of the need for heart surgery on airway protection in our infant population. This, combined with the documented increased risk for R vocal fold motion impairment post ECMO in this population, helps us to advocate for our involvement in safe progression to PO for these vulnerable infants.

Citation: Narawane, A., Rappazzo, C., Hawney, J., Clason, H., Roddy, D. J., & Ongkasuwan, J. (2021). Vocal Fold Movement and Silent Aspiration After Congenital Heart Surgery. The Laryngoscope.

Abstract

Infants who undergo congenital heart surgery are at risk of developing vocal fold motion impairment (VFMI) and swallowing difficulties. This study aims to describe the dysphagia in this population and explore the associations between surgical complexity and vocal fold mobility with dysphagia and airway protection.

Methods

This is a retrospective chart review of infants (age <12 months) who underwent congenital heart surgery between 7/2008 and 1/2018 and received a subsequent videofluoroscopic swallow study (VFSS). Demographic information, Society of Thoracic Surgeons-European Association for Cardio-Thoracic Surgery (STAT) category of each surgery, vocal fold mobility status, and VFSS findings were collected and analyzed.

Results

Three hundred and seventy-four patients were included in the study. Fifty-four percent of patients were male, 24% were premature, and the average age at the time of VFSS was 59 days. Sixty percent of patients had oral dysphagia and 64% of patients had pharyngeal dysphagia. Fifty-one percent of patients had laryngeal penetration and 45% had tracheal aspiration. Seventy-three percent of these aspirations were silent. There was no association between surgical complexity, as defined by the STAT category, and dysphagia or airway protection findings. Patients with VFMI after surgery were more likely to have silent aspiration (odds ratio = 1.94, P < .01), even when adjusting for other risk factors.

Conclusion

Infants who undergo congenital heart surgery are at high risk for VFMI and aspiration across all five STAT categories. This study demonstrates the high prevalence of silent aspiration in this population and the need for thorough postoperative swallow evaluation.

This will inform your pediatric practice whether in the inpatient or community pediatric setting.

 

 

Research Corner: High Flow Oxygen Therapy and the Pressure to Feed Infants with Acute Respiratory Illness

The impact of Nasal Continuous Positive Airway Pressure (NCPAP) and/or High Flow Nasal Cannulae (HFNC) on swallowing physiology in infants via the swallow-breathe interface is not fully understood. However recent literature is worrisome for increased risk for airway invasion, often silent. It is increasingly common for hospitalized infants to have orders to PO feed while requiring this level of respiratory support. PO feeding is part of the path to discharge.

Some may be otherwise normally developing and recovering from a viral process, yet still present with precarious readiness to return to PO. Some may have a  premorbid history of feeding/swallowing problems, and co-morbidities that place them at an even higher risk. Further research is needed to guide for safe return to oral feeding of infants and children in the PICU with an acute respiratory illness who require NCPAP or HFNC.

In the interim, careful clinical assessment and consideration of risk from multiple perspectives are essential. Conversations with the team that follow will require familiarity with the current literature and dialogue that considers that  infant’s presentation and unique risks. Sometimes, despite our advocacy, there is a decision to proceed with PO feeding. Cautious pacifier dips for purposeful swallows may be followed by brief small PO trials with a slow flow nipple with strict co-regulated pacing to limit the bolus size and support swallow-breathe synchrony, with positioning that optimizes tidal volume. Once there has been some brief motor learning and problem-solving, an instrumental assessment to objectify swallowing physiology under the  current respiratory support would be essential. It is critical that physiology and pathophysiology be our focus in radiology, not just the events of bolus mis-direction in and of themselves that we happen to capture in the short time under fluoroscopy. During the course of a true feeding, intermittent/interval changes in rate and depth of breathing, tidal volume and/or vigor may be a tipping point that leads to silent airway invasion. I don’t know that this is readily understood by all of our medical colleagues.

While my conclusions above differ from those of the authors regarding the potential role of instrumental assessment, the article referenced below is a valuable resource for you:

Raminick, J., & Desai, H. (2020). High Flow Oxygen Therapy and the Pressure to Feed Infants with Acute Respiratory Illness. Perspectives of the ASHA Special Interest Groups5(4), 1006-1010.

Abstract

Purpose Infants hospitalized for an acute respiratory illness often require the use of noninvasive respiratory support during the initial stage to improve their breathing. High flow oxygen therapy (HFOT) is becoming a more popular means of noninvasive respiratory support, often used to treat respiratory syncytial virus/bronchiolitis. These infants present with tachypnea and coughing, resulting in difficulties in coordinating sucking and swallowing. However, they are often allowed to feed orally despite having high respiratory rate, increased work of breathing and on HFOT, placing them at risk for aspiration. Feeding therapists who work with these infants have raised concerns that HFOT creates an additional risk factor for swallowing dysfunction, especially with infants who have compromised airways or other comorbidities. There is emerging literature concluding changes in pharyngeal pressures with HFOT, as well as aspiration in preterm neonates who are on nasal continuous positive airway pressure. However, there is no existing research exploring the effect of HFOT on swallowing in infants with acute respiratory illness. This discussion will present findings from literature on HFOT, oral feeding in the acutely ill infant population, and present clinical practice guidelines for safe feeding during critical care admission for acute respiratory illness.

Conclusion Guidelines for safety of oral feeds for infants with acute respiratory illness on HFOT do not exist. However, providers and parents continue to want to provide oral feeds despite clinical signs of respiratory distress and coughing. To address this challenge, we initiated a process change to use clinical bedside evaluation and a “cross-systems approach” to provide recommendations for safer oral feeds while on HFOT as the infant is recovering from illness. Use of standardized feeding evaluation and protocol have improved consistency of practice within our department. However, further research is still necessary to develop clinical practice guidelines for safe oral feeding for infants on HFOT.

Research Corner: Infant and maternal factors associated with attainment of full oral feeding (FOF) in premature infants

This newly published paper reminds us that, in the NICU, care is best when it is family-centered. Our most vulnerable preterms and their mothers benefit most when compassionate and thoughtful caregivers consider not only the infant’s co-morbidities but also maternal anxiety, stress, and depression, when assessing premature infants’ oral feeding performance. They influence each other, and should guide our approach to supporting the feeding experience.

 

Muir, H., Kidanemariam, M., & Fucile, S. (2021). The Impact of Infant and Maternal Factors on Oral Feeding Performance in Premature Infants. Physical & Occupational Therapy In Pediatrics, 1-7.

Abstract

Aims: To identify infant and maternal factors associated with attainment of full oral feeding (FOF) in premature infants.

Method: A retrospective study was performed on 89 premature infants (<34 weeks gestational age) from a tertiary care neonatal intensive care unit (NICU). Infant and maternal factors were concurrently assessed. Infant factors included gestational age, birthweight, continuous positive airway pressure assistance, mechanical ventilation support, and presence of neonatal morbidities including bronchopulmonary dysplasia (BPD), necrotizing enterocolitis (NEC), and intraventricular hemorrhages (IVH). Maternal factors included maternal age, first born, twin birth, and presence of mental health conditions including anxiety, stress, or depression.

Results: A total of 89 premature infants were included in the sample. A stepwise linear regression model revealed that infants who received mechanical ventilator support and presence of maternal mental health conditions were significantly associated with time to attain FOF.

Conclusions: Results suggest that oral feeding performance is influenced not only by infant’s medical severity denoted by need for ventilator assistance, but also by presence of maternal anxiety, stress, and/or depression.

Details of conclusion: In terms of infant factors, this study revealed that mechanical ventilation support is associated with time to attain FOF. These study results are supported by others who found that infants with a chronic lung disease who require oxygen therapy or prolonged ventilation, are older by post conceptual age, when bottle feeding is initiated. Although the literature indicates that younger gestational age, lower birth weight, and neonatal morbidities such as BPD, IVH, and NEC are associated with longer FOF attainment these factors were not significant in this study. The lack of significance in GA, BW, and neonatal morbidities is likely because both infant and maternal factors were simultaneously assessed in the stepwise linear regression model which may have impacted the significance of these variables on FOF. Stepwise linear regression model essentially does multiple regression a number of times, each time removing the weakest correlated variable. At the end, the variables remaining are those that best explain FOF. Oral feeding consists of infants’ ability to generate and coordinate suck, swallow, and breathe processes. This entails proper functioning of the oral musculoskeletal, cardiorespiratory, and gastrointestinal systems. Taking the above into consideration, the study findings suggest that infants’ respiratory status, defined by need for mechanical ventilation assistance, has a significant effect on FOF, as it is one of the main systems involved in the oral feeding process. With regards to maternal factors, this study found that the presence of a maternal mental health condition, in particular anxiety, stress, or depression, is negatively associated with attainment to FOF, which corroborates a recent study (Park et al., 2016*). They found that increased maternal psychological distress was associated with decreased use of developmentally supportive feeding behaviors. These results suggest that mothers with psychological distress may be less responsive to the infant signals and needs. The literature suggests that maternal mental health conditions are associated with feeding behaviors but does not directly link this factor to delays in FOF as in this study. The study findings bring to light the importance of considering both infant and maternal factors when assessing premature infant’s oral feeding performance. 

*Park, J., Thoyre, S., Estrem, H., Pados, B., Knafl, G., & Brandon, D. (2016). Mothers’ psychological distress and feeding of their preterm infants. American Journal of Maternal Child Nursing, 41(4). Available through Google Scholar

 

Research Corner: Severe IVH and Biorhythms of Feeding

This just published paper by Gewolb and Vice, two well known neonatal feeding researchers, adds to our evidence base about severe IVH as a co-morbidity that can alter feeding progression in neonates 35-42 weeks PMA. As such, it may be an added consideration for consult to neonatal therapists in the NICU.

Gewolb, I. H., Sobowale, B. T., Vice, F. L., Patwardhan, A., Solomonia, N., & Reynolds, E. W. (2021). The Effect of Severe Intraventricular Hemorrhage on the Biorhythms of Feeding in Premature Infants. Frontiers in Pediatrics, 870.

OBJECTIVE: evaluate the underlying rhythms of suck,
swallow, and breath in a low-risk cohort of preterm infants, as
well as in cohorts with severe IVH, BPD, or BPD + IVH, thus
allowing us to determine whether neurological injury alone has
an adverse impact on the rhythms of infant feeding.
We hypothesized that the attainment of rhythmic stability of
suck-suck and suck-swallow dyads would be adversely impacted
in the high-risk preterm groups and that respiratory and
neurological issues might have different effects on the overall
biorhythmic patterns seen.

CONCLUSION
Severe IVH has a negative impact on the biorhythms of suck-suck
and suck-swallow in preterm infants 35–42 weeks PMA. If a
preterm infant with IVH but without BPD at 35–42 weeks PMA
lacks adequate feeding biorhythms, there could be a need for
additional workup to identify possibly undetected neurological
injury. The independent effect of severe IVH on feeding rhythms
suggests that quantitative analysis of feeding may both reflect
and predict neurological sequelae, and perhaps points to a critical
period where intervention may be most efficacious.

I am attaching is as it is open access on Google Scholar  Severe IVH and Feeding (2021)

Research Corner: Best Practices in VFSS

Wanted to share this recent publication on best practice for swallow studies,  which brings to practicing clinicians both the state of the science and best practices from leading researchers.

Martin-Harris, B., Canon, C. L., Bonilha, H. S., Murray, J., Davidson, K., & Lefton-Greif, M. A. (2020). Best Practices in Modified Barium Swallow Studies. American Journal of Speech-Language Pathology29 (2 Suppl), 1078.

Abstract:

Purpose: The modified barium swallow study (MBSS) is a widely used videofluoroscopic evaluation of the functional anatomy and physiology of swallowing that permits visualization of bolus flow throughout the upper aerodigestive tract in real time. The information gained from the examination is critical for identifying and distinguishing the type and severity of swallowing impairment, determining the safety of oral intake, testing the effect of evidence-based frontline interventions, and formulating oral intake recommendations and treatment planning. The goal of this review article is to provide the state of the science and best practices related to MBSS.

Method: State of the science and best practices for MBSS are reviewed from the perspectives of speech-language pathologists (SLPs) and radiologists who clinically practice and conduct research in this area. Current quandaries and emerging clinical and research trends are also considered.

Results: This document provides an overview of the MBSS and standards for conducting, interpreting, and reporting the exam; the SLPs’ and radiologist’s perspectives on standardization of the exam; radiation exposure; technical parameters for recording and reviewing the exam; the importance of an interdisciplinary approach with engaged radiologists and SLPs; and special considerations for examinations in children.

Conclusions: The MBSS is the primary swallowing examination that permits visualization of bolus flow and swallowing movement throughout the upper aerodigestive tract in real time. The clinical validity of the study has been established when conducted using reproducible and validated protocols and metrics applied according to best practices to provide accurate and reliable information necessary to direct treatment planning and limit radiation exposure. Standards and quandaries discussed in this review article, as well as references, provide a basis for understanding the current best practices for MBSS.

Click here to view/download from NIH Best Practices in Modified Barium Swallow Studies (nih.gov)

 

Research Corner: Critical Thinking Skills

Many of you know about Dysphagia Café, a wonderful resource for SLPs. The attached link will take you to an article just posted there by  Ed Byce, M.Ed. CCC-SLP and  Angela Van Sickle, PhD, CCC-SLP on critical thinking. Such foundational information to put our knowledge into action as we problem-solve patients across the age span and co-morbidities. Filled with clinical references, it reinforces the importance of being life long learners and is a must read.

A quote from their conclusions:
The good news is that the progress of gaining knowledge can be measured incrementally, one bit of information at a time. Now the proverbial ball is in your court. Take some time to set goals for learning. Will it be one article a week? Two per month? Will it be starting a journal club to review the information with colleagues? Perhaps it will be developing a robust data collection system? There are many possibilities, but it is worth the journey because patients are counting on you! 

 I think it’s so easy to look for a cookbook or an algorithm, and it gives us a sense of security. It is perhaps a false sense of security, given our complex patients,  each of whom is unique in terms of history, co-morbidities and clinical progression. Each needs a unique algorithm. As the authors so eloquently explain, problem-solving always requires a deeper dive, filled with knowledge but also with questions that help us complete our differential. This article really should be a must read for graduate students,  to reinforce that living in  the “gray zone”,  as  like to call it,  i.e., stepping back and pausing, not expecting yourself to have all the answers or a quick answer,  is ok.  And it is not only ok, but also essential. It underpins critical reflective thinking,  and best supports effective patient care, no matter what the age or co-morbidities.

Building a Knowledge Base to Improve Critical Thinking Skills – Dysphagia Cafe  

 

Research Corner: An Overview of Tracheostomy Tubes and Mechanical Ventilation Management

Barnes, G., & Toms, N. (2021). An Overview of Tracheostomy Tubes and Mechanical Ventilation Management for the Speech-Language Pathologist. Perspectives of the ASHA Special Interest Groups, 1-12.

This is a wonderful addition to our working knowledge base about tracheostomy. While it is focused on the adult population, it provides quite useful information and clinical reasoning to inform the practice of pediatric therapists.

 Authors’ conclusion:

 SLPs are a vital part of the clinical team for patients with tracheostomies and on ventilators. New SLPs or SLPs new to this population may not have an adequate knowledge base to become an effective part of the clinical team. This clinical focus article, although not all inclusive, is an overview of respiratory considerations, disease processes, medical considerations, and complexities that effect the overall prognosis of tracheotomy and ventilator patients. Basic explanations of tracheostomy tubes, ventilation, and weaning have been provided as well to familiarize SLPs to the terminology. Overall assessment of the patientsmedical conditions, respiratory status, oral condition, speaking valve tolerance, voicing ability, secretion management, swallowing ability, and interventions are outlined to give the SLPs a comprehensive picture of these complex patients. A working knowledge in these areas is crucial for SLPs to become effective members of the clinical team involved in facilitating the patientsrecovery. It is highly recommended that this clinical focus article be a starting  point and encourage SLPs new to this population to further their knowledge base with education courses, hands-on training, and review of current literature related to tracheostomy and ventilated patients.

Research Corner: Vocal Fold Movement and Silent Aspiration after Congenital Heart Surgery

This is a wonderful addition to our evidence base related to the potential impact of the need for heart surgery on airway protection in our infant population. Combined with the documented increased risk for R vocal fold motion impairment post ECMO in this same population, it can aid us we advocate for our involvement in safe progression to PO for this vulnerable infants.

Citation: Narawane, A., Rappazzo, C., Hawney, J., Clason, H., Roddy, D. J., & Ongkasuwan, J. (2021). Vocal Fold Movement and Silent Aspiration After Congenital Heart Surgery. The Laryngoscope.

Abstract

Infants who undergo congenital heart surgery are at risk of developing vocal fold motion impairment (VFMI) and swallowing difficulties. This study aims to describe the dysphagia in this population and explore the associations between surgical complexity and vocal fold mobility with dysphagia and airway protection.

Methods

This is a retrospective chart review of infants (age <12 months) who underwent congenital heart surgery between 7/2008 and 1/2018 and received a subsequent videofluoroscopic swallow study (VFSS). Demographic information, Society of Thoracic Surgeons-European Association for Cardio-Thoracic Surgery (STAT) category of each surgery, vocal fold mobility status, and VFSS findings were collected and analyzed.

Results

Three hundred and seventy-four patients were included in the study. Fifty-four percent of patients were male, 24% were premature, and the average age at the time of VFSS was 59 days. Sixty percent of patients had oral dysphagia and 64% of patients had pharyngeal dysphagia. Fifty-one percent of patients had laryngeal penetration and 45% had tracheal aspiration. Seventy-three percent of these aspirations were silent. There was no association between surgical complexity, as defined by the STAT category, and dysphagia or airway protection findings. Patients with VFMI after surgery were more likely to have silent aspiration (odds ratio = 1.94, P < .01), even when adjusting for other risk factors.

Conclusion

Infants who undergo congenital heart surgery are at high risk for VFMI and aspiration across all five STAT categories. This study demonstrates the high prevalence of silent aspiration in this population and the need for thorough postoperative swallow evaluation.

This will inform your pediatric practice whether in the inpatient or community pediatric setting.

Research: Disruptions in the development of feeding for infants with congenital heart disease

Jones CE, Desai H, Fogel JL, et al  (2020). Disruptions in the development of feeding for infants with congenital heart disease. Cardiology in the Young, 1-8

This just published manuscript is a valuable resource for therapists supporting feeding/swallowing for infants with CHD.  The authors include in the-trenches pediatric therapists from leading programs across the US. It will inform your practice,  whether you are in the hospital, Early Intervention  or community programs that support these complex infants.

The introduction:

Congenital heart disease (CHD) is the most common birth defect for infants born in the United
States, with approximately 36,000 affected infants born annually. While mortality rates for
children with CHD have significantly declined, there is a growing population of individuals with
CHD living into adulthood prompting the need to optimize long-term development and quality
of life. For infants with CHD, pre- and post-surgery, there is an increased risk of developmental
challenges and feeding difficulties. Feeding challenges carry profound implications for the quality
of life for individuals with CHD and their families as they impact short- and long-term neurodevelopment related to growth and nutrition, sensory regulation, and social-emotional
bonding with parents and other caregivers. Oral feeding challenges in children with CHD
are often the result of medical complications, delayed transition to oral feeding, reduced stamina,
oral feeding refusal, developmental delay, and consequences of the overwhelming intensive
care unit (ICU) environment. This article aims to characterize the disruptions in feeding
development for infants with CHD and describe neurodevelopmental factors that may contribute
to short- and long-term oral feeding difficulties. 

They discuss the impact of: cardiac physiology, necrotizing enterocolitis, gastroesophageal reflux, timing of cardiac surgical interventions, sedation and medication, chylous pleural effusion, respiratory support, neurodevelopment, genetic syndromes, a noxious feeding environment, nerve paralysis/paresis, and dysphagia. They then discuss the consequences of these feeding challenges, including: nutritional interference, breastfeeding difficulty, tube feeding, oral aversion, and finally long-term feeding outcomes.

 

Supporting Feeding for Infants with Cleft Lip/Palate

Congratulations to Brenda Fetter, SLP  from Childrens’ Mercy in Kansas City for joint authorship on a wonderful new publication.

Kaye A, Huff H, Fetter B, Thaete K (2020) Cleft Lip and Palate Newborn Care and Feeding: A Primer for Bedside Nursing Providers. Int J Nurs Health Care, 2 Volume 03; Issue 07

Contributions from a  plastic surgeon and pediatric dietician make it a unique offering. Witten as a primer for bedside nursing providers working with newborns with cleft lip and palate, it provides excellent information for  all of us to consider for informing our practice with this infant population.

While each of us may have a slightly different slant on intervention approaches based on our unique clinical experiences, it provides a solid compendium of information to inform our practice.

 

Click on this  secure link for the open access article:  Kaye et al (2020) cleft palate primer for RNs

The Science of Breastfeeding

The science and physiology of breastfeeding has always been a great interest of mine. Partnering with IBCLCs early on taught me so much. They instilled in me a desire to learn and understand the critical implications for our bottle-feeding practice with infants, especially with my work supporting preterm infants and their mothers in the NICU. The works of Paula Meier (regarding the infant-controlled flow rate at the breast — -once mother pumps through letdown—and how it reminds us then to offer a slow  controlled flow from a man-made rubber nipple, to minimize adaptation required and optimize safety). The works of Nyqvist about successful breastfeeding experiences as early as 29 weeks PMA (I suspect likely related to controlled flow rate that absolutely best supports breathing stability for suck-swallow-breathe synchrony). With every mother in our NICU that I am blessed to work with via consult regarding bottle-feeding, if mother is pumping, I advocate for early nuzzling, early breastfeeding, and share the research (in a simple way) about flow rate, how breastfeeding is actually easier than bottle feeding for preterm infants, and that breastfeeding always facilitates progression of bottle feeding skills  (in my experience). The infant-guided nature of breastfeeding that supports the “dance” between mother and infant is at the heart of trust, communication and trauma-informed neuroprotective care.

Too often I hear well-intentioned caregivers in the NICU tell mothers that breastfeeding is harder for preemies, and I see the sadness come over the mother. I am always so grateful to be there to gently reinforce what the evidence tells us and encourage our mothers on behalf of our infants.

I can’t imagine working with bottle-feeding infants without understanding the science and physiology of breastfeeding. In every course I teach we carve out time to discuss the science and physiology of breastfeeding and how we can best support bottle-feeding experiences that facilitate continued successful breastfeeding.

Research: Videofluoroscopic swallow-study outcomes among infants with tracheotomies

While problem-solving a recent NICU infant I was following with a tracheotomy, I incorporated this information from a study done through Nemours Childrens Hospital in DE. It was presented as a poster session at the ASHA convention, and has not been published to my knowledge. The study was well-done, the findings are informative and can help guide our care of infants in the NICU who require tracheostomy. Contact the authors for more information. I am quoting below from the poster presented.

Videofluoroscopic swallow-study outcomes among infants with tracheotomies                        Jeannine Hoch, MA, CCC-SLP; Michele Morrow, MS, CCC-SLP; Heather Keskeny, MA, CCC-SLP; Aaron Chidekel, MD   

Due to advances in technology, tracheotomy tube-placement is becoming increasingly common during the first year of life.

Infants with tracheotomy are at risk for developing feeding and swallowing problems: There is a paucity of descriptive information regarding dysphagia for infants following tracheotomy. Lack of available research leaves many clinicians feeling unprepared to provide services for pediatric tracheotomy patients.

Infant feeding patterns may also be impacted by environmental and associated medical conditions such as: Gastroesophageal reflux, Low birth-weight, Bronchopulmonary dysplasia, Long-term nasogastric tube-feedings, disruption of parent–infant interaction due to long-term hospitalization

Goals of their study:

  • Based on reports from videofluoroscopic swallowing studies, what are the swallow characteristics of infants with tracheotomies?
  • What percentage of patients required enteral feedings via nasogastric and/or gastrostomy tube-feedings?
  • Are trends present between swallow dysfunction, underlying medical conditions (gastroesophageal reflux, premature birth, nature of illness necessitating tracheotomy tube placement), and the need for enteral feedings?

A Retrospective study

  • Subjects (n = 27) whose Tracheotomy-tube placement by 4 months of age with mechanical ventilation  – Males (n = 16), Females (n = 11) – Exclusion criteria included grade III or IV IVH or presence of severe neurodevelopmental delays that preclude initiation of oral feeding
  • Data collection:  Medical history, Results of initial videofluoroscopic swallow-study, Results of serial follow-up studies when applicable

Data analysis

  • Trends may exist between initial swallow-study findings and reason for tracheotomy-tube placement:
    • Airway issues (n = 10): delayed swallow-initiation (80%), laryngeal penetration (80%), aspiration (50%), residue following swallows (50%), and nasopharyngeal reflux (50%)
    • Respiratory distress with BPD (n = 17): delayed swallow-initiation (53%), laryngeal penetration (71%), aspiration (29%), residue following swallows (47%), and nasopharyngeal reflux (41%)
  • Among patients who underwent G-tube placement (n = 17):
    • Less than half (47%) had documented aspiration on their initial swallow-study.
    • Majority (94%) had documented reflux.
  • Among patients who underwent follow-up swallow studies (n = 17):
    • Laryngeal penetration tended to persist (n = 6) more frequently than it resolved (n = 4).
    • Aspiration tended to resolve (n = 5) more frequently than it persisted (n = 2).
  • Report of oral motor-impairment (n = 12, 44%) and oral phase-impairment (n=17, 63%) was common.
  • All of the patients (n = 27) achieved at least partial or therapeutic oral-feedings as noted on recommendations from their final swallow-study.

 

Research: Challenges to eating, swallowing, and aerodigestive functions in infants

Jadcherla, S. R. (2019). Challenges to eating, swallowing, and aerodigestive functions in infants: a burning platform that needs attention! The Journal of pediatrics211, 7-9.

Always insightful and leading-edge, Dr. Jadcherla at Nationwide Children’s clearly identifies major focus points  in our journey toward supporting independent functional feeding for all of our pediatric patients. Follow his research in those key areas. Read the entire paper on Google Scholar.

Quoting from the article:

“…only when we understand the causal and ameliorating mechanisms of eating, swallowing, and aerodigestive dysfunctions, and the cause for practice and process variation, will we then be able to modify strategies for appropriate diagnostic, therapeutic, and rehabilitative approaches to ensure safe feeding during and beyond ICU stay, lest, we run the risk of over- or underutilization of gastrostomy procedures. In the end, we seek to restore the most fundamental of human behaviors, safe eating”

 

Quoting from the article:

“Summary of 10 Ps That Require Careful Attention to Disrupt the Rising Prevalence of Pediatric Dysphagia

 (1) Physiology of eating, swallowing, and aerodigestive functions in the context of the developing infant must be better understood. Maturational variability and rapid growth during early infancy offer a unique opportunity to improve eating patterns in premature infants.

 (2) Pathophysiology of the mechanisms of pediatric dysphagia also requires careful study so as to provide pathophysiology-guided clinical care.

 (3) Patient characteristics are variable in any given scenario of feeding difficulties, and attention to the risk factors is key because modification of risk factors can improve outcomes.

 (4) Parent involvement and anticipatory guidance for dealing with eating difficulties, swallowing, and aerodigestive morbidities must be undertaken from early on, so that appropriate and timely interventions can be addressed.

 (5) Providers in the healthcare system may be unaware of the factors that influence infant feeding, and physicians may wholly delegate this area to occupational therapists or speech language pathologists. Newer data over the last 2 decades has emerged, and the pace of rapid translation from discovery to implementation will be enhanced when silos of expertise are eliminated and knowledge, attitudes, and skills are reexamined.

 (6) Procedures performed in the diagnosis of pediatric dysphagia need standardization, with careful reevaluation of indications and contraindications in the context of the fragile ICU infant. Diagnostic delays lead to delays in timely interventions during critical windows of opportunities.

 (7) Precision medicine is possible only when the underlying mechanisms are understood and targeted with innovative approaches at the bedside of the infant in the ICU.

 (8) Personalization of diagnostic, therapeutic, and rehabilitative approaches in the context of the infant’s condition, maturity, disease, and functional skills is important.

 (9) Pragmatism in approaches coupled with humanism is needed particularly with developing longitudinal follow-up of feeding milestones. Clinically meaningful outcomes such as independent feeding must be a functional goal”

Enjoy this fabulous read!

Research: Effects of Additives for Reflux Management and Dysphagia Management

This manuscript  was released in 2019. It  is a compelling read about potential adverse effects of cereal thickeners (rice versus oatmeal) added to formula, and adding medications to formula, and their impact on osmolality. Alteration of ready-to-feed preterm formulas may significantly increase osmolality and have unintended consequences (feeding intolerance, pain, prolonged GI transit, bacterial overgrowth).

The AAP has advocated against the use of thickening agents for high risk preterms under 44 weeks PMA. In the NICU and with infants after discharge in general, we always need to take pause prior to thickening feedings for infants with dysphagia, and do so after other interventions are offered (change in nipple flow rate, position, use of pacing strategies). For many infants, implementing these strategies will support safe swallowing. This manuscript adds to our understanding of the importance of considering risk-benefit ratio in all that we do.

The salient findings from this study are:
1) Cereal thickening amounts and agents added to ready-to-feed liquid preterm formulas impact osmolality and can cross the limits of AAP safety thresholds. Specifically, the thickening agent increases osmolality, and oatmeal contributed to greater osmolality compared with rice on an equi-volume basis. 2) Commonly used vitamin and electrolyte supplements added to ready-to-feed preterm formula can remarkably increase osmolality

They conclude: 1) When thickening is still a strong consideration for Dysphagia/GER management, the ready-to-feed thickened formulas may be a safer alternative as the mixture is more homogeneous and has been vigorously tested, and passes FDA regulations including osmolality thresholds. Other alternative treatment strategies may include modifications to nipple flow or feeding volume, pacing while feeding, or appropriate positioning of the infant during feeding.  2) mixing medications in the entire volume of feed, or dividing doses across multiple feeding sessions mixed with feeds to decrease the osmolality as much as possible.

I am attaching this manuscript as it will be a good discussion point with our medical teams in the NICU, with pediatricians and GI specialists, and for those of us who follow infants in the community.

I hope this informs your practice.​

Here is a link to this article.