Sensory Processing and Feeding Issues in Children with Congenital Diaphragmatic Hernia

Brad Myers, MA, OTR/L, Occupational Therapist


May 29, 2013

 

My experience with CDH

Our son was born full term with Left Congenital Diaphragmatic Hernia (CDH). On his third day of life, he was placed on Extracorporeal Membrane Oxygenation (ECMO), where he remained for 18 days. He finally underwent CDH repair surgery when he was a month old, where his liver, stomach, and portions
of his intestine had to be relocated to his abdomen.
A week later, he endured yet another surgery to
fully close the CDH repair surgery incision, since there were now more organs in his stomach for his skin
to fully close initially.
Survival statistics for CDH children are still unacceptable, even with all of today’s medical interventions. It is estimated that 50% of children diagnosed with CDH will not survive. At birth, my son was given a 30% chance of survival. As you could imagine, our main priority was the survival of our son. However, thanks to a wonderful medical team, we eventually emerged from the cloud of fear that he would not survive and that we were actually going to be able to bring him home! However, we quickly learned that getting a child with CDH to survive was often only half of the battle. Even though he was probably going
to live, our son would not eat, could not tolerate many of the sights and sounds that he was experiencing, and was not able to come home with us. There is a lot of information about how to get children with CDH to SURVIVE, but there is very little information about how to get them to LIVE. As a parent of a child with CDH and as an Occupational Therapist, I wanted to begin the discussion of what happens to these kids once their lives have been saved, but still have these common issues that we were unprepared for.
When a child is born with CDH, the first priority is to stabilize their medical condition. This often involves
ventilators, nitric oxide, ECMO, and a host of medications and other procedures. Once stabilized, the child will usually undergo surgery to correct their defect. Instead of being at home with their family
experiencing the sights, sounds, smells, and tastes of their new world, CDH kids like my son often endure long, complicated hospital stays. Normally, a baby returns home a few days after being born and
are exposed to hugs and warmth from their parents, stuffed animals, snuggly blankets, and cute toys.
Children born with CDH, on the other hand, are surrounded by the beeps and alarms of monitors,
needle pricks, medical tape, and all sorts of tubes shoved into their little nose and mouth to keep them
alive. They are usually unable to tolerate the touch, sight, and sound sensations that “normal” babies
experience. This input is extremely important for babies to learn how to process the information that
they are receiving from their environment and, without it, they often develop sensory processing disorders which make it difficult for them to function.
Feeding
Once the child with CDH has been stabilized and successfully undergone repair surgery, one of the most common, on-going issues that they face is improper feeding/swallowing skills or the complete inability to feed at all. Babies are born with the reflex to root and suck for their mother’s breast or the bottle
nipple and typically possess the instinct to suck and swallow. Since CDH children are typically only able
to lay flat on their backs in the NICU under sedation
, they are unable to consciously feed and slowly
begin to lose their reflexive feeing behavior. Further complicating this issue is the various foreign objects
that babies have to have in their mouths such as a ventilator hose, a stomach pump (Replogle) tub
e, and/or a feeding tube that provide constant sensory input and eventually reduce or eliminate the
feeding reflexes. This continues until the child can sustain themselves without all of this extra
equipment and are often still unable to go home because they cannot –or will not –eat.
Children with CDH often require ventilator and Replogle tubes in serted into their mouths, which affects sensory skils needed
for feeding. They are also often unable to tolerate auditory or visual stimulation and will require noise cancelling ear muffs and
eye masks.
Parents at this stage have now lived through the hell of possibly losing their newborn. While paling in
comparison to the debilitating fear of losing your child, feeding issues are one of the most frustrating
complications that occur with CDH survivors. Not only are the reflexive instincts to root, suck and swallow often lost because of prolonged sensory isolation and constant oral input, the child may find it unpleasant to eat because of reflux or hyper-sensitive gag reflex.
Reflux is common in CDH children. The abdominal contents may have already formed incorrectly in
utero and may be further jumbled by repair surgery. Because of these issues, the esophageal sphincter,
which is typically responsible for keeping stomach contents from coming back up, may be weaker. As a
result, whatever the child eats (as well as stomach
acid) comes back up into the esophagus (throat) from
the stomach. Eventually, the repeated damage to the esophagus from stomach acid makes feeding
uncomfortable for the child. Hyper-sensitive gag reflex is often a common issue. Normal children receive constant sensory input to their mouths through feeding and putting toys and fingers into their mouth. As a result of these sensations, the gag reflex is normalized to the back of the throat. CDH kids do not receive this sensory input because of the sedation and tubes, so the gag reflex is often much more pronounced. When this happens, the child may gag whenever anything is inserted, even into the front or middle of the mouth,
or may later gag whenever certain food textures are presented. Even if reflux is not an issue with these
kids, a hyper-sensitive gag reflex may cause them to vomit any stomach contents when feeding.
The most important thing to remember in either (or both) of these cases is that the child does not
understand the purpose of feeding. At this age, the child will avoid unpleasant experiences, even a
necessary behavior such as feeding.
If adults are uncomfortable when feeding, they are able to understand that this is a necessary behavior in order to survive and push through it. If babies are
uncomfortable, they will not eat. This is often a very difficult concept for caregivers to understand and
they feel like, if they just continue to push the child to eat that, eventually, they will. However, pushing
the child may make the feeding experience even more unpleasant and may be making the feeding
difficulties worse. If your child is experiencing symptoms of reflex (crying, gagging, vomiting, bubbling/gurgling noise after eating), it is important to speak with your physician immediately. Use of medication can greatly reduce the discomfort associated with eating and turn his process into a more pleasurable experience for the baby.
Some families have also found the use of app
etite stimulants successful, however your physician and therapists should be consulted first. If the child does not have the skills to feed or swallow, increasing
their appetite could only increase the stress of the infant. They are hungry, but cannot figure out how to
eat. If they TRY to eat, but are swallowing incorrectly, this could be a dangerous situation, as food may
be going into their lungs –increasing the likelihood of aspiration pneumonia.
Feeding Tubes
If the child does not respond to feeding s
timuli soon, a feeding tube will be required in order for the child to receive nutrition. In the beginning, a naso
-gastric (NG) tube will be placed, so that milk or
formula can be passed through the nose to the stomach. The NG tube is typically a temporary
solution, as it is very easily pulled out by the child. Great care must be taken when the NG tube is re
-inserted to insure that it is not inappropriately placed into the child’s lungs. Because of this risk, children typically do not go home with NG tubes
and a more permanent tube is placed instead.
If the child’s feeding issues persist and a more long
-term solution is required, a Gastric tube (G-tube) will
be inserted. There are different types of G-tubes, depending on where in the child’s digestive system the
tube is placed, but they all function on the same premise: nutrition is able to reach the child’s digestive
system through the abdominal wall, rather than having to be voluntarily processed by the mouth and swallowed by the child.
The thought of having a child with a feeding tube of any kind is often difficult for parents and caregivers.
When my son was going through this process, we pushed him very hard to accept a bottle, but it
seemed like the harder we pushed, the hard
er he rebelled, and the worse his feeding aversion became. In fact, this is exactly what was happening. Parents often do not understand why their child “just won’t eat”. They force their child to accept a bottle or food into their mouth, hoping that they will just learn on
their own, but what they are doing is making the feeding aversion worse. Again, I believe that this is the
most important message that needs to get to parents, caregivers, and medical professionals caring for
children who have now survived CDH. STOP FORCING THEM TO EAT! It is often in the child’s best
interest to depend on a feeding tube for nutrition while feeding training or therapy attempts to normalize the child’s sensory and feeding skills and makes feeding a pleasant experience. Parents and caregivers need to keep in mind that the feeding tube is not always a permanent solution, as children often wean off of th
em when they learn to eat enough to sustain themselves. This may be a long process, but it is still preferable to creating a child with a permanent inability to eat because of force feeding.
Feeding Therapy
Once the child’s medical status is stabilized, i
t is extremely important that sensory therapy is begun as soon as possible. CDH children often require Occupational, Speech, and Physical Therapy to overcome the issues they developed while medical professionals were saving their life. In some cases, it may be appropriate for the child to receive therapy in the NICU, even when they are sedated or hooked up to
medical equipment, if they can tolerate it. If not, therapy may begin while the child is still in the hospital
in preparation to return home. When the child returns home, they will receive therapy in the home or in
an outpatient clinic. Regardless of setting, it is vital that children with sensory and feeding issues begin
therapy as soon as they are able to tolerate it. Parents should not take matters into their own hands and try to resolve feeding issues without professional guidance.
If therapy is not directly referred by the child’s medical team, is completely appropriate for the caregivers to ask for a referral. As with any other medical profession, different therapists have different specializations. Before beginning therapy, make
sure that your therapist is trained in feeding and/or sensory processing habilitation.
My SonToday
My wife and I were finally able to hold our son for the first time when he was 6 weeks old. He still relied
on a ventilator to breathe, had a Replogle tube and feeding tube in his mouth and a variety of IV tubes in
his arms and legs. He had endured 18 days on the ECMO machine, 4 surgeries (including his hernia
repair surgery) and countless other xrays, ultrasounds, echo-cardiograms, and other procedures. About
a month later, he had weaned off of everything but the NG feeding tube. My wife and I knew that our
return home was right around the corner –but we remained in the NICU for almost 2 more months
working on feeding issues. After 4 months in the NICU at Duke, we finally took our son home with the NG tube. He had a severe case of reflux and it seemed to us that he vomited everything that went into his little stomach. This must not have been the case, however, as he continued to gain weight, but still had almost no interest in eating or putting anything into his mouth.
We immediately began outpatient Occupational and
Physical Therapy, focusing on feeding and sensory
skills. It was a long process, but our son slowly learned to enjoy exploring his mouth during play –
and eventually began putting food into his mouth -
and eventually began taking small bites-and eventually
began to eat! During the week of his first birthday party, we were able to remove the NG tube for good.
I cannot tell you how long and frustrating of a process this was, but in the end, it was totally worth it.
As of this writing, our son is a fairly normal 4 ½ year old. Despite mild asthma, he plays t-ball and basketball, is on the neighborhood swim team, and is able to keep up with all of the other kids in his pre-school. We still have the occasional issues wit
h certain food textures and vomiting, but overall, his
feeding habits are essentially similar to other kids his age and he rides the 25% curve on the growth
chart for weight. As with any other parent who is at this point in the CDH journey, we have been infinitely blessed with knowledge and skills of a miraculous team of doctors, nurses, occupational therapists, physical therapists, speech therapists, respiratory therapists....... You get the point. Children born with Congenital Diaphragmatic Hernia and their families are faced with seemingly impossible odds. It is my hope that this information will make one aspect of that journey less stressful. I do not intend for this information to be an all inclusive resource for children with feeding disorders as a result of CDH and I certainly do not want it to be used in lieu of seeking out the advice of experienced therapy professionals. However, as this is a process that we have survived and conquered, I am more than willing to be a resource for others. I can be reached at
ecuotr@yahoo.com or on Twitter: @bradmyersotrl.
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