Problem-Solving Poor Feeding Post Jejunal Atresia Repair

Question:

I was just consulted on an infant with a history of jejunal atresia with repair. He was born at 33 weeks GA and is now 41 weeks. He reportedly has consumed 50-90mL adlib on demand per physician of breast milk via bottle. Mother reports feeding every 3-4 hours. The OT that has been working with this little one has incorporated use of a slow flow nipple and external pacing which reportedly assists with coordination and reduces frequency of adverse events but the infant continues to demonstrate physiological instability. During some feedings he demonstrates coughing within a few minutes of onset of feeding. Mother reports that any change or disruption of coordination results in change of physiological stability. These episodes occur during as well as after feeding in which he is demonstrating coughing, occasional color change, desaturation, and bradycardia (both during and after feeds). The RN and mother indicate that on a couple of occasions at night, he has required blow-by. No significant spit ups noted, however, RN reports that on one occasion, small amount observed on external nares. They have reportedly attempted various nipples, positioning, and have also tried breast feeding (which resulted in a significant episode). Reflux strategies/precautions have already been implemented but without much improvement.

Reduced coordination is an issue, however, also suspect EER as piece to this. I am trying to determine differential and plan on completing MBS to get a better idea of swallow physiology. Does anyone have any experience with children with this particular diagnosis or thoughts on this case?

Answer:

The jejunal atresia repair in and of itself does not explain the decompensation you report. All we know about history is the infant is a preterm born at 33 weeks. Are there any other co-morbidities such as Neuro or respiratory? Post-op he may have some lower branch of the Vagus-driven atypical sensory GI responses but that would not typically lead to the clinical behaviors you describe. What is his WOB like at baseline and how does it vary with the aerobic demands of feeding? Does the infant otherwise present as a typical former 33 weaker at his current adjusted age? Can the events appear to be averted by co-regulated pacing that is more strict with an Ultra-preemie nipple? Without knowing the answers to these questions, I would be asking to complete an instrumental assessment to objectify swallowing physiology and determine if there is normal physiology which is being altered under certain conditions or if physiology is impaired, what the etiology is (or etiologies are) that lead to bolus mid-direction. The clinical behaviors you describe in this neonate are ones I typically see associated with aspiration. To continue to feed the infant despite volumes ingested given these adverse overt events does not support neuroprotection and may lead to feeding refusals.

I do not think the thermal stimulation suggested would be advisable as we have at this point no known etiology for the events observed. Every intervention should be thoughtfully matched with clinical behaviors and etiology, and used within an evidence-based framework. At this juncture in your differential, the data don’t lead us in that direction.

Of course EER (Extra Esophageal Reflux) may indeed be part of what is happening but we cannot assume that. It is possible that EER events are co-occurring during swallowing, which could result in bolus mis-direction if the infant’s swallowing physiology is indeed altered in the moment by the EER. It is possible the decompensation observed during PO feeding is due solely to EER events (bolus mis-direction from below) that is occurring both during feeding and at non-feeding times. Hopefully an incidental finding of EER would then be captured by the radiologist during the swallow study. Alternatively, the events of decompensation observed clinically may indeed reflect a true dysphagia –but if so, the etiology (or etiologies) can then be determined during the swallow study. An instrumental assessment will give us an impression of the possibly multiple factors impacting the dynamic swallow pathway. This then can inform the differential and then guide both the SLP and the entire team in terms of next steps for intervention as well as further diagnostic workup.

I hope this is helpful.

Catherine

Shaker Seminars at Colorado Children’s Hospital

Just returned from a wonderful week in Denver teaching at Colorado Children’s Hospital. What an amazing facility with a world class team. No wonder they continue to be in the Top Ten Children’s Hospitals in the country.

Those attending came from across the US and Canada. It is always such an opportunity for all of us to learn, when we can network with such a large group that reflects perspectives from many teams and cities.

A few pictures below of me with my colleague, fellow instructor and friend, Theresa Gager, at the entrance by their logo, on our arrival.

Denver was beautiful, especially the mountains and skies. Just being out side was refreshing, especially for me coming from hot humid Orlando !

We also could not resist this iron sculpture of rabbits with long ears so here we are having fun. Life is so short we have to have fun along the way at every opportunity.

Hope our paths cross down the road.

Catherine

eColorado bunnies hosp

Problem-Solving Swallowing after Supraglottoplasty

Question from Jennifer SLP: I’m curious to know your thoughts and/or procedures for feeding evals post supraglottoplasty? Do you always do an MBS? Only when indicated? How soon after supraglottoplasty do you do an MBSS (if you do one)? What are your treatment plans/outpatient recommendations if they are not safe to PO? Thank you!

Answer:
It really depends on the infant’s/child’s history and co-morbidities, as of course each has a unique presentation and requires an individualized differential.

In general, when co-morbidities require a supraglottoplasty is recommended, there is typically an associated adverse effect on swallowing physiology being appreciated pre-op. The post-op swallowing physiology, however, is not always improved. It is sometimes more problematic after the supraglottoplasty, which can actually worsen airway protection and further alter physiology.

The related co-morbidities (e.g., prematurity, sensory-motor issues etc.) and altered pre-op system function (GI, respiratory, neuro etc.) will further affect post-op results.

Perhaps work with the ENT/surgeon/attending as to timing of small PO trial with ST to get the infant/child ready for radiology and then objectively determine any adverse effects along the swallow pathway present post-op, or any impairment/alteration that was appreciated pre-op and persists post-op. Sometimes surgeons assume the supraglottoplasty will “fix” swallowing and that may not be the case, in my experience.

Then here is the updated information from Jennifer, SLP:
This has been really helpful. I’ve been working with the ENT, he doesn’t have an idea of when exactly she will be “healed” from her procedure, but we both agree she may need more time. Here is the case in full:

Ex 36 weeker, brought to hospital at 1 week old for stridor. Found to have severe laryngomalacia – obstructive with the arytenoids collapsing in the airway. Made NPO because (Thank you Catherine – I’ve been to your course!) she couldn’t breathe – so she couldn’t eat. Trialed taste trials, but continued to have increased work of breathing and desats were significant. Had a supraglottalplasty on 9/5/16. Trailed taste trials again on 9/8/16 with little to no stridor but multiple swallows (x5) with each bolus and increased congestion with trials. Continued with taste trials for a week. Medical team pushed for a MBSS, they were worried we were being too conservative as a baby post supraglottalplasty may still continue to have noisy feeding. In the MBSS the baby aspirated on thin and nectar consistencies, even using a preemie nipple, 1-suck pacing, sidelying, 1/2 filled nipple. She had really poor swallow function observed in the MBSS – overall weak sluggish movements, multiple swallows, aspiration on primary swallows and residuals. We are continuing to trial tastes with her conservatively – but no progress thus far. She is now term, and the ENT believes she probably had a poor swallow and once they lasered away the tissue covering her airway, her swallow dysfunction was more obvious. She has no other known co-morbidities.

I’m just wondering when we need to make decisions about her long-term plan? Do we give her more time? Also, has anyone worked with a baby like this and have any successful treatment plans? Thank you so much.

My response:
Thanks for more information. Are there other less obvious co-morbidities, as this sounds atypical for a late preterm (36 weeks GA) with an “isolated” laryngomalacia. What was the etiology (or etiologies) for the aspiration? Were the events silent? Was there any other form of bolus mis-direction? We know she otherwise has no known co-morbdities, but is she presenting normally (neuro, postural tone/movement patterns, oral-pharyngeal reflexes, saliva swallows)? I suspect not, based on what you have told us.

I agree with the ENT that the infant probably had swallowing dysfunction pre-op and once they lasered away the tissue covering her airway, I took away “protection for the airway” and her primary swallowing dysfunction “declared itself”. EER/LPR may be playing a part as it is commonly associated with both LM and silent aspiration according to the research. Wonder if ENT saw evidence of EER/LPR when he scoped her? Is she being treated for EER/LPR? Could there be aspiration both from below and above that might be contributing?

Since this presentation is atypical for a late preterm with LM –are they doing a further work up to help elucidate the bigger picture likely affecting the integrity of her swallow? It is perhaps a separate issue from the original need for a supraglottoplasty and that may help to guide prognosis and plan.

Given the nature of the swallowing impairment you describe, and the interventions so thoughtfully trialed in radiology, I suspect this is not going to resolve in the near future. Keep us posted on the results of a further workup as that should help decision-making. Continued pacifier dips and positive oral-sensory-motor input will be important to keep her system primed for return to PO feeding, as co-morbidities and safety permit.

Erika Lee, one of my SLP colleagues from Oklahoma, reminds us that “the purpose of supraglottoplasty is to improve the infant’s breathing; and if that is accomplished, then feeding usually gets better. The supraglottoplasty usually delivers benefits immediately; but then the effects get better over time as the surgery site heals (especially if a laser was used). Surgeons typically assess the entire airway and palpate the interarytenoid space to assure that there is no laryngeal cleft.” The just published manuscript is attached.

I hope this is helpful.

Please click below for the manuscript…

Supraglottoplasty Otolaryngol Head Neck Surg 2011 (818-22)

Cue-Based Feeding Seminar

An NICU SLP asked me about resources for training neonatal nurses on feeding stress cues and stop signs. An SLP I know from Minnesota, Wendy, suggested the SLP take a look at the EFS. I responded to the post and share it with you here since it will let you know what you will hear about at our October 15-16, 2016 EFS training seminar in San Antonio TX this year!

Hi Wendy,
Thank you for your kind comments about The Early Feeding Skills Assessment Tool (EFS). It has evolved over the years as a wonderful guide to cue-based feeding in the NICU. I especially am proud of it because it looks at feeding from the infant’s perspective and is grounded in physiology. It reflects how I conceptualize feeding in the NICU, which I refer to as “infant-guided”, i.e., a dynamic approach based on contingent co-regulation between infant and caregiver. That maybe a parent/family member, a nurse, or a therapist.

A little background for list serve readers. Both working in NICUs at the time, Dr. Suzanne Thoyre and I first collaborated in the early 1980s about infant feeding in the NICU and how to describe infant’s feeding skills. When Dr. Thoyre, as a part of her NICU research, wanted to teach mothers how to describe their infant’s feeding problems during phone follow-up post-NICU discharge, the EFS began to take shape. After using the EFS for years and working with each other to continue to improve it, we published it and began to share it with others in 2005. With multiple revisions, as research and our learning continues, it is now used in several NICUs across the US, both by nurses and SLPs as they assess infant feeding, and as Wendy mentioned, with families to help them understand their infant’s communication and physiology during feeding, using a common language with staff.

The EFS assesses the preterm infant’s ability to maintain physiologic stability during feeding, remain engaged in feeding, organize oral-motor function and coordinate sucking and swallowing with breathing. The EFS, by the nature of its design, considers not just oral-motor skills but rather, the whole infant, from posture, to physiology, to breathing, to state, to coordination, to swallowing, to oral-motor skills as well.

Beyond that, it focuses on the integration of these domains for function, all within a developmental care framework. It is unique in that it recognizes the value of understanding the infant’s adaptive responses to the feeding task, and how they are instructive to the caregiver.

The tool is also based on dynamic systems theory (that multiple systems synergistically affect each other during feeding) and these systems are assessed dynamically throughout an entire feeding, to arrive at a gestalt. Capturing variability across the entire feeding is a critical part of the analysis/integration of information. The items are designed to capture the variability in the infant’s learning of the foundational components of feeding skills, the continuum of that learning, and the emergence of skills; so it assesses whether component skills are not observed, are emerging, or are indeed consistently expressed. It is often used serially to capture developmental progress in feeding over time.

The EFS leads the caregiver, by the nature of how it is designed, to the interventions that naturally flow from the results of the assessment. It profiles interventions to support adaptive function during feeding and swallowing, and therefore interventions for safety.

The EFS is user friendly in that it is not focused on understanding and identifying only isolated oral-motor components but rather making sense of what all caregivers “see” every day when they feed preterm infants–the infant’s communication/cues during feeding. It provides a common language about feeding terminology (such as what do we mean by an infant is “pacing” himself, or what is “coordinated”, for example) to help all team members, including families, get on the same page, so conversations and report have common meaning.

We do require training on use of the tool (offered at least yearly) to assure implementation in keeping with its intended purpose and parameters. SLPs typically then go back and teach their own NICU staff with resources provided during the training. I am so glad the EFS has advanced infant-guided feeding in your NICU!

Please Click Link Below For More Details:

Cue Based Seminar 2016

Tube Fed Children: Management, Weaning and Emotional Considerations

Working with our infants and children who are tube fed can be challenging. This recent article by a well-respected interdisciplinary team highlights some key perspectives and current data that can inform your therapy practice. Hope you enjoy it as much as I did.

Caring for Tube Fed Children

Pediatric Feeding Problems from the Parents’ Perspective

Wanted to share this recent article that so well captures the importance of the family as the most important part of our therapy with their child. As the authors state: “A child and their family have a feeding problem; they experience this journey together. It is more inclusive to consider this issue in the context of the child’s natural environment with the people who are most familiar and invested. A shared conceptualization that families can relate to (without perceived stigma) and that providers could use to classify pediatric feeding problems would improve potential for early feeding assessment, referral, and for feeding intervention efficacy to last long term. “ Click on the link below to enjoy this wonderful article!

MCN Am J Matern Child Nurs 2016 Mar 23

Problem-Solving with Catherine

QUESTION: Hello! I work in a residential home with medically fragile infants. We currently have an 11 month old (7months adjusted). He is trach and vent dependent with many diagnosis’ due to prematurity including: pulmonary hypertension CLD, PIE

We are having many debates (speech/ nurses) on respiratory rates that are appropriate for feeding. Can anyone provide some guidelines that are based on research as the nurses are stating that his resting respiratory rate is in the 50’s therefore it is ok for his RR to be elevated during feedings… Help!!! I am on an island!!!

ANSWER: Given this was a 28 weeker based on his adjusted age, his longstanding respiratory co-morbidities from the NICU are most likely the biggest part of the picture still, even though now 7 months adjusted age. Did he indeed get the trach in NICU due to need for long-term ventilation, or were there any airway pathologies that might now preclude tolerance of an in-line PMV? When was the last time ENT saw him to assess airway integrity?
Often infants with a history like his may have multiple issues/co-morbidities that need to be considered regarding readiness to feed. I like to start with a recent airway assessment as I mentioned so you can discuss with the ENT his perspective on readiness to trial a PMV in line and to secure an order if team agrees. If his co-morbidities do not preclude a PMV trial, experience shows us that the inline valve can typically help wean vent settings in infants, and of course could also contribute to restoring subglottic pressure (for improved pressure gradients for swallowing – a key component of infant swallowing). It would also help him manage his secretions as he could then “feel”/sense the secretions. You don’t mention anything regarding his secretion management, which is a factor to consider, but I find it is often improved by a PMV if tolerated. Just feeling his secretions and then swallowing his secretions is a big learning curve for an infant like this and is a critical step along the way.
He has no taste and smell right now, which most likely he actually has never experienced, given that he most likely was vented and trached in the NICU. This is a big void for infants with his history. Being able to use his sensory system (taste, smell, touch/tactile) to “guide” the swallow will be critical for this infant whose oral-sensory-motor system has been altered for some time. Indeed, when he is truly ready (from multiple perspectives of readiness) to trial some tiny PO tastes (most likely of puree), my experience suggests the entire swallow pathway will be better supported via use of a PMV. Again if he tolerates a PMV, based on the original etiolog(ies) for the trach and current airway integrity. I always look to partner with ENT, Pulmonology and my RTs.
Regarding respiratory rate (RR), our RTs tell us that focusing on RR as a primary indicator is quiet limiting and does not take into account the infant as a whole, in particular both his current level of respiratory support (vent settings, Fi02 needs, ability to wean settings, trends over the last month or so, overall progression toward weaning, for example) and his work of breathing (WOB) both at rest and with activity. By WOB, I mean breathing effort – it is often a better overall indicator of physiologic stress than RR alone. WOB would include for example: nasal flaring/blanching, chin tugging, retractions (suprasternal, clavicular, pharyngeal, intercostal, substernal) – this increased respiratory effort, if present at baseline, suggests the “workload” required with breathing, even despite respiratory support, may indeed render the ability to organize breathing even with non-nutritive sucking precarious; the attendant “aerobic workload” is something he needs time to work through and learn to modulate with help during therapy. Being able to “feel” oral-pharyngeal airflow during non-nutritive sucking or oral play is in itself a step along the way to future PO.
Too often, well-intentioned caregivers who think PO feeding will be “fun” are not appreciating the complexity of the task with an altered airway, being hooked up to a vent, not being able to taste or smell (which they often don’t understand as sequelae from tracheostomy) and having a long history of altered oral-sensory-motor experiences, as well as other developmental concerns related to the need for a trach (i.e., gross and fine motor delays, altered postural control, especially in the head and neck, which can affect ability to feed), and other co-morbidities associated with being born so extremely preterm that can alter his overall developmental trajectory.
I know this response is much deeper than you expected, but so much to consider – RR is just the tip of the iceberg so to speak. You aren’t really on an island because we are all out here, each of us learning and at times struggling with similar issues, perhaps with similar patients or clinical questions. I actually like being in the “gray zone”, as I like to call it, where the answers are not clear but the questions often are. That is of course how we grow.
He is lucky to have you in his corner as you try to both protect him and offer him opportunities to grow and develop. I hope this gives you food for thought as you consider next steps. Your population of medically fragile infants is one of the most challenging.
Catherine

Problem-Solving with Catherine

Question:

I work with a 4-month old baby with lots of gastro issues on G-tube. He has had a nissen fundo surgery. Originally NPO. I gave mom strategies for oral motor but he has a great suck pattern and no visible oral motor issues. Also gave strategies for environmental modifications while feeding. He is now clear for only puree. I dont know if I should continue seeing him and how to proceed if I do. I have little experience with babies so any or all suggestions are welcome. Thank you!

Answer:

Sounds like a challenging patient. Since you have little experience with infants, this would be a great opportunity to partner with an SLP locally who has treated infants. We don’t know much about this infant except that he is 4 months old. To fully understand what is going on, we need to gather data, including his history, and combine that with what you are seeing to then be able to complete a differential. Some of the history you can gather from the parents, but I would also request records from the referring physician. We would want to know for example: was he born at term, or post-term or was he a preterm infant? What do we know about his birth history? Was he hospitalized in the NICU after birth? If so, how long was he there? What were his medical problems when he was there? Did he require oxygen? Has he had any other surgeries other than the G-Tube/Nissen? Are there still medical problems the doctor is sorting out or following? Why did they place a G-Tube? Did he have a swallow study and what did it tell us about his swallowing physiology? Is he otherwise developing normally for a 4 month old (posture, head control, UE and LE movements/control, swallowing saliva, getting hands to mouth on his own and appreciating that, accepting pacifier, visually alert/engaged and tracking, starting to make sounds?) It may be hard for you to fully assess these developmental parameters, as well as oral-motor integrity, and an extra set of eyes from another SLP will be both helpful and important.

From what you have told us it sounds like reflux is a part of the differential but that alone is unlikely to, though could possibly, lead to the need for G-Tube feedings. It is possible that, given he is to feed only purees, he may have shown alerted or impaired physiology with liquids. The altered or impaired physiology, if identified, should be correlated with an etiology in the swallow study report. Just knowing he “aspirated” won’t guide our differential and plan, as we would want to know what was the nature of the bolus misdirection (to the nasal airway? to the laryngeal airway?) and why the bolus mis-direction occurred, if it did; what they recommended for him at that time. That then drives a plan of care and suggests strategies to specifically address the problems identified.

While some infants do have oral-motor problems that contribute to the need for G-Tube feedings, there can be multiple co-morbdities, or problem areas that contribute. Knowing more about his medical history would help uncover or elucidate these factors, and they are critical to our assessment and treatment plan. They actually form the context in which we interpret our data, i.e., what we observe clinically and what the family tells us about what they see. You mention that he has no visible oral motor issues so then we want to look deeper and broader at other systems that underlie effective feeding, including GI, respiratory, postural, neuro, sensory, for example. Information about his history should guide you toward these suggested domains or away from them.

It is wonderful you reached out to this list serve, but as you can see his presentation and what to do with him is much more complex than can be fully addressed through the list serve. Perhaps use this an opportunity to learn and build your skills, and seek an SLP mentor to work alongside you and guide you.

Not sure if that is possible where you work, but I suspect not or you would have tried sought a colleague’s help.

It takes a clear objective sense of our own limitations and humility to think about not continuing to see a patient for whom we feel unprepared. I think as I read between the lines you are at that juncture and are to be commended for that tough call. Each of has been there and let’s hope we have all been as willing to ask questions and recognize the need to respectfully send the patient to another SLP, whose current skill set is a better match. Were this your infant with feeding/swallowing problems, you would want his therapist to make a decision that is in the infant’s best interest.

I hope that this has been helpful.

Catherine

Problem-Solving with Catherine

Question: I need help brainstorming possible etiologies for chronic vomiting/regurgitation with a 3 year old.

Medical hx is significant for 36 week prematurity, hypoplastic left heart syndrome now s/p Fontan on 6/16. On 6/18, pt w/new onset left side weakness; imaging found hypoxic injury and watershed infarct. PMH also significant for submucosal cleft palate and GT dependence. Chart review revealed ongoing ST to address feeding issues from infancy, including oral aversion and decreased oral motor development, both now resolved. Parents report pt is interested in PO feeding and will put all textures in his mouth but chews them and pockets rather than swallowing because he is afraid of vomiting. Assessment revealed mild OM weakness but adequate lingual lateralization and chewing skills. Initial PO trials were with preferred foods (smooth puree and water via straw). After very small volumes (less than a teaspoon of each), pt regurgitated the food/liquid which subsequently expelled everything else he had “eaten” via GT up to 2.5 hours earlier. The gag did not happen until after pt had safely swallowed on both trials (separate events with puree and liquid). Parents report that this happens several times a day and that pt also vomits without PO intake (just GT feeds) but that is less common. Pt has had several MBSS which revealed functional pharyngeal skills (oral skills were lacking in one but that was some time ago). The only UGI pt has had was when he was an infant, as part of the work up for GT but they presented contrast via NGT and only viewed stomach and beyond. Therefore, today, I asked for an esophagram to rule out structural or functional issues in the upper GI sections. This test was negative.

These parents are so frustrated and don’t know why their son is vomiting all the time. What I witnessed did not appear to be related to sensory/behavioral (texture aversion) or swallow dysfunction. I was wondering about UES dysfunction or esophageal pouch/diverticulum but the radiologist did not see evidence of those today. Any suggestions??

Answer:
There may be a variety of GI issues to consider as part of the differential. You don’ t mention if he also received a Nissen at the time in infancy when his G-Tube was placed; if so this may be part of the puzzle, especially considering the vomiting after G-Tube feedings. His diagnosis of HLHS and multiple surgeries, and subsequent post-cardiac surgery GI complications are quite common, as Shaunda suggested. The lower branch of the vagus can wreak havoc with many of our babies and children post-op. Given his history and pre-morbid feeding challenges (oral aversion, oral-motor problems), there may now be an exacerbation of those premorbid challenges. Given that he must have had some kind of post-op event on or prior to 6/18 that resulted in a documented hypoxic injury and watershed infarct, I wonder if there may also be some alterations in pharyngeal and/or upper esophageal function that may be also part of the etiology. What I mean is that even though there is a strong case for GI issues as a part of your differential, there are apparent recent neuro ones too that, along the swallow pathway, may alter both pharyngeal and upper esophageal (especially UES) swallow function. You mentioned he has had several swallow studies but has there been once since the onset of left sided weakness and the watershed infarct and cardiac repair? This would be a great opportunity to objectify both pharyngeal and upper esophageal swallowing physiology with at least the puree and liquid he clinically appeared to swallow well. His complex history and the recent post-op event suggest to me the need for a current instrumental assessment. Because the UGI is a moment in time, and that his is such a complex presentation, a test result such as a “negative UGI” may not tell the whole story. Perhaps during the swallow study, you may also capture an incidental finding related to GI function, and given the focus on dynamic swallowing in the swallow study (versus what they may focus on in an UGI), you may be able to gather needed data about both pharyngeal and upper esophageal function. The combination of his multiple co-morbidities, and their interaction, is likely quite complex, and the data from a swallow study may help inform the entire team’s perspectives.
Catherine

Indwelling NG Tubes

In community-based early intervention, children/infants with indwelling NGTs (nasogastric tubes) may come to us for services. They may have struggled for extended periods of time learning to PO feed while having NGTs for months. By the time we see them, there may already be onset of early aversive behaviors set in motion. Our job then is often to then unwind the negative learning. I recognize as I travel the US teaching that discharge to home on indwelling NG tubes is getting more common, including bridled NGTs and I am concerned. In my experience, those infants/children for whom this is a consideration clearly require the interdisciplinary perspective which the attached paper advocates.

A common concern as pediatric therapists is the potential impact of indwelling NGTs on the oral-sensory -motor system, both in the short term and the long-term. This perspective is shaped by those infants/children whom we follow after the decision is made and often present with sequelae from a well-intentioned plan. The challenge is always the risk-benefit ratio for each individual infant/child. This paper does a good job of articulating the importance of looking at the bigger picture. That is it can help the team, especially related to co-morbidities, to better profile those infants/children whose feeding issues are likely to truly be “short-term” versus thus whose medical history and co-morbidities suggest a more enduring feeding/swallowing problem. I hope this article informs your team’s practice.

NG-tube vs. G-tube

Problem-Solving with Catherine

Question:

What are your thoughts therapeutic taste trials? We are a level 3b NICU. And
have many babies with multiple medical complexities. We are beginning a
therapeutic taste trial protocol for babies who are over 32 weeks PMA, have
a nonnutritive suck, and physiological stability. The idea behind this is
practice swallowing for babies who are yet able to bottle feed due to a
number of factors but mostly babies who are on too much oxygen support (1.5
liters of hi Flow or greater)

I have some concerns especially regarding babies who are post PDA ligation
and we are receiving “encouragement” from physicians to begin this protocol
on babies on bubble CPAP. My obvious concerns with PDA ligation is the
incidence of paresis to left vocal fold and CPAP from my understanding
maintains positive pressure for open airway which worries me for poor airway
protection/open airway during the swallow. The bolus give is .05ml-.2 ml
increments. Also what are your thoughts on using sterilized water vs
breastmilk/formula? we seem to be giving them less than what they get from
“oral care”. Any help will be greatly appreciated!

Answer:

I think this could be supportive provided the therapist drives the plan
(once the consult is ordered), and that careful attention is given to
physiologic stability and infant engagement during all oral-sensory-motor
experiences and with pacifier dips. I would in general not be offering
“nipple” delivered boluses at 32 weeks PMA; however, even at 33-34 weeks
PMA, each infant’s unique history, co-morbidities postural control and
current level of support needed, as well as baseline WOB and RR would all
together best determine relative risk and how to best proceed. Many positive
experiences for readiness can be part of therapeutic interventions prior to
offering a nipple for PO feeding.

Infants s/p PDA ligation are highly at risk d/t the typical respiratory
sequelae associated with having required a ligation. A scope by ENT has been
advocated in some recent papers (search Google Scholar) suggesting many
infants are asymptomatic post-PDA ligation surgery despite having true vocal
cord motility sequelae and therefore scoping should be considered to assess
the airway integrity.

I think MBM is always better than sterile water or formula – more sensory
load than sterile water and a more normal oral-sensory-motor experience. No
one has studied it to my knowledge but I suspect that if traces of MBM are
micro aspirated, perhaps the lungs will better tolerate MBM than formula.

I hope this is helpful.

Catherine

Problem Solving with Catherine

Question:
I have not yet personally seen this baby (he’s 2-3 months old), but got some background info from our NICU ST. I’m trying to brainstorm before he sees me for a follow up appointment. Baby had VFSS in NICU and was safe on thickened formula (nectar, I believe) with baby oatmeal. Baby never took off with feeding while in the NICU and was d/c with NG and doing 1-2 bottles/day. As baby has been home he’s having painful constipation issues and thickened feeds have stopped. Baby is to have follow up with GI, but will end up seeing me before them.
He’s coming back as an outpatient for a repeat VFSS. Now, in a perfect world he’ll pass without thickener… but if not, I’m wondering what my options are for thickening feeds? Has anyone thickened for infants with something other than baby oatmeal/rice cereal? Is there another option besides cereal and NG tube?

Answer:
Late responding to this thread. You may have already seen this infant for the repeat VFSS by now. We don’t know much about his history except that he was in NICU, which leaves a wide potential for possible co-morbidities that would be important to your differential in radiology. The GI discomfort you mention makes EER/GER a possible co-mrobidities but there are likely others that you will want to both peel apart and consider together “synactively” to better understand his dynamic swallow and its function during feeding given what you find out about his feeding “environment”, i.e., how he is fed, bottle used, his clinical presentation while he feeds and post-feeding behaviors

Hopefully you were able to get more information about why he was placed on nectar thick liquids post-NICU VFSS – the etiology for the apparent bolus mis-direction should guide you in the follow up study and help you problem-solve as well as look at optimal interventions to address that etiology –sometimes thickening is viewed as a solution but it is not, as you know. As Suzanne Evans Morris said years ago, it is merely a step along the way to improved swallowing. When the VFSS analysis and synthesis of information informs our understanding of the infant’s physiology, we can then develop a plan of care to address both the etiology as well as an interim plan to optimize safety.

We try both in the NICU and with infants either post-NICU, or who were never in NICU, to avoid thickening whenever possible. Because toady we have so many flow controlled nipple options, we are much more able in radiology to find a nipple flow rate combined with co-regulated pacing that optimizes bolus size and enhances timing of the suck-swallow-breathe sequence. There aren’t many options to thicken for infants. Our GI docs have concern for grain allergy in infants, increased constipation, and other MD specialist often have their own concerns (altering of caloric density and nutrients, electrolyte balance, free water etc.) Gel Mix is a newer carob bean based thickening product developed by a GI doc that some hospitals are using for some post-term infants. You can find more information on the internet or by talking to its developer. It is often helpful to partner with the attending, in this case likely a pediatrician, to ask, if thickening appears to be the least problematic option, what would he prefer his patient receive. As many previous list serve threads have expressed, the answers for each patient must be individualized, be the product of a team’s perspectives, and its effects be assessed in an on-going manner. It is challenging to live in the “gray” zone where the answers are not black and white nor are they immediately clear, but require deliberate and reflective thinking. Each of us in radiology is faced daily with this dilemma, and I think it makes us better clinicians at the end of the day. Our physician colleagues have always considered risk-benefit ratios for their patients regarding multiple options, and we can do no less, considering all levels of evidence and family/team input.

I hope this is helpful. Keep us posted on what the repeat VFSS suggested.

Catherine

Article Review: High Flow Cannulae

Article Review

Leder SB, Siner JM, Bizzarro MJ, McGinley BM, Lefton-Greif MA.

Oral alimentation in neonatal and adult populations requiring high-flow oxygen via nasal cannula. Dysphagia 2016, 31;154-159.

article available through Google Scholar

I am quite concerned by the conclusions of Leder et al regarding safety of oral feeding for preterm infants requiring CPAP.

Advocating for safety for these infants is a critical one for SLPs in the NICU and PICU. Current NICU technology has advanced to the point that more infants are surviving and yet many are requiring extended periods of CPAP and HFNC. Many extremely preterm infants in our NICU with CLD at post-term (41 weeks PMA +) remain dependent on CPAP or HFNC. Our team has had good collaborative conversations about the benefits of ST being involved to maintain a positive oral-sensory environment, promoting the oral-sensory-motor components that are the underpinning’s for future PO feeding, beginning early to foreshadow for parents the swallowing, breathing and postural skills needed, and helping families also support those components, versus attempting PO feeding when the infant clearly is struggling with respiratory stability. Clearly, medical co-morbidities predispose an infant in the NICU to PO feeding problems. Multiple papers have studied that. Those infants with the greatest respiratory co-morbidities, often those born < 28 weeks’ gestation and BW < 1000 grams, are most likely to require CPAP and/or HFNC at those post-menstrual ages when PO feeding is often attempted. Sick newborns may also present similar issues. Secondary to their co-morbidities.

If the infant has such respiratory needs that he requires CPAP, or a HFNC, one must ask if PO feeding is really a priority for that infant at that time. The ability to reconfigure the pharynx from a respiratory tract and back to an alimentary tract with precise timing and coordination surrounding each swallow is a concern. When we look objectively in radiology during an instrumental assessment of swallowing physiology, even infants with CLD stable on RA have altered or impaired swallowing physiology as a direct result of their CLD. The bolus mis-direction and resulting aspiration we often observe is typically silent. This is quite concerning given the conclusion from Leder et al’s study does not even mention this possibility. In the adult population in the most recent information I have seen (Garon et al, 2009 Journal of Neuroscience Nursing) reported that of 2000 adults studied with a variety of co-morbid conditions, including COPD, 54.5% of those who aspirated did so silently. Should the potential for silent aspiration not at least be mentioned? The data I have collected thus far for NICU infants suggests strongly to me that even the data from Arvedson et al in 1994 likely underestimated the tendency for infants to silently aspirate. In addition, her study population was not only less involved from a respiratory perspective back in 1994 than the population we see today, but it also was a population composed of not just infants. The need for an “urgent breath” often can predispose an infant with increased work of breathing to silently mis-direct the bolus into the airway during the swallow. The ability of the infant to close the glottis against the driving force of the respiratory support, while breathing with increased effort or with an increased respiratory rate, which effectively creates air hunger, and yet still maintain glottic closure throughout the duration of the swallow, would likely be precarious. Given the infant’s likelihood of baseline tachypnea and increased WOB, the dynamic adjustments of the airway surrounding the swallow are likely to be disrupted, and create uncoupling of swallowing and breathing. Without objective data on the impact of CPAP or HFNC on swallowing physiology we cannot conclude that feeding under these conditions is “safe”. Indeed, infants for whom we do not necessarily capture aspiration during a dynamic swallow study may indeed show alterations in swallowing physiology that may indeed predispose them to aspiration under “the right conditions” during PO feeding (changes in nipple flow, changes in position, changes in respiratory support for example) so it isn’t even just about aspiration but the potential impact of CPAP and HFNC on swallowing physiology. The fact that the infants “ate” and “were fed” and “transferred volume” does not equate to “safe feeding”. Leder et al’s conclusions don’t unfortunately take this into account.

We must of course consider as well the physiologic stress likely to occur when the infant experiences “feeding” under such circumstances. It is highly possible the stress of trying to breathe and coordinate a swallow may actually lay down neural pathways that move the infant away from wanting to eat, by wiring those sensory-motor pathways that lead to current and/or future maladaptive feeding behaviors. We know that studies looking at stress in preterms have shown an association with adverse changes in brain structure on MRIs.

My colleague, Dr. Suzanne Thoyre, a neonatal nurse feeding researcher, raised some excellent questions about the study design some of which I will try to share in my own words, as she is not a part of our list serve

What did Leder et al deem for inclusion criteria that would be “stable respiratory status” and “Cardio-respiratory stability”? Typically, infants requiring CPAP or HFNC have both increased WOB and increased RR. RR may appear artificially low when rates are captured by a monitor for example that does not sense shallow rapid breaths. Was WOB a consideration? This is a key component of infant clinical assessment of breathing in preparation for attempting as well as during PO feeding. Excessive WOB even in the presence of a less elevated RR can alter timing of swallowing and breathing and often lead to silent bolus mis-direction in the NICU population, much as it might in adults with respiratory work. It is common that infants requiring even low flow oxygen cannot feed without a co-occurring increase in their work of breathing. Two of my OT colleagues in NICUs out East who each observed MD-directed RNs feeding infants on CPAP and HFNC reported seeing significant increase in WOB, RR and signs of behavioral stress.

How was successful oral feeding measured? Did they collect physiologic and behavioral data that demonstrated no indicators of stress, change in oxygen saturation, change in HR, change in respiratory status? The tool they used to measure this needs to be provided. If the feeder simply filled out a checklist, it would be important to know how those observers were trained, how all of these parameters were described and what definitions were used for change in these parameters.
Are the infants in the study on CPAP and HFNC truly being PO fed at 32 weeks PMA? Or is the term “corrected GA” being used incorrectly? I ask because typically even healthy preterms without co-morbidities stable in RA are not being fed PO in most NICUs, with some rare exception. This needs clarification and perhaps makes the conclusions even more concerning.

Unfortunately, Leder et al’s paper will reinforce an incorrect not uncommon assumption. Many neonatologists incorrectly assume that there is a window within which our preterms must “experience” PO feeding or they will “miss that critical window and never learn”. So despite co-morbidities and often respiratory needs that are paramount, infants are being asked to feed. That well-intentioned paradigm is based on writings from Gesell back in the 60s that talked about a “critical window” for learning to eat. Those times were different in many ways as was the population being described. Early intervention now in NICUs to support readiness, neonatal care that is neuro-protective and promotes positive overcomes, and recognition of safety issues inherent in the complex task of PO feeding even when weaned from CPAP and HFNC clearly call for reconsideration of that paradigm, which, perhaps to a large part, underlies the thinking that leads to “pushing PO” and orders to PO on CPAP and HFNC. Many of our former preterms do learn to feed orally at later ages, once weaned, and from my experience do so with much less stress and much more safely.

The dialogue needs to continue and we need measures of oral feeding that go beyond intake, and methods of assessment that actually capture critical variables, including objective assessment of physiology.

I hope this is helpful.