This case study addresses post discharge nutritional care of VLBW infants. The focus is on a multidisciplinary team approach to ongoing and developmentally changing feeding issues. Participants should be able to satisfy the following learning objectives:
Feeding problems are a daily, stressful routine for many families with a VLBW infant. Feeding issues are usually multi-factorial and complex, involving nutrition, growth, bonding, behavior, developmental readiness, oral aversions, medical complications, financial stress, and time constraints. In order to meet the diverse challenges associated with feeding issues, the most effective approach is the utilization of a feeding team.
A feeding team includes a multidisciplinary group of professionals, each with a specialized area relevant to the feeding experience. Feeding teams may include various combinations of the following: a registered dietitian nutritionist, an occupational, speech, or physical therapist, a mental health specialist, a nurse, a family resource coordinator, an early intervention educator, a social worker, and a physician. The family is also a part of the feeding team. The family helps identify issues that need to be addressed, provides feedback as to the effectiveness of treatment strategies, and operates as a "reality check" regarding the practicality of recommendations within the context of the family.
The specifics of a feeding team consultation may vary, but usually include an assessment of growth, a nutrition evaluation, and a feeding observation that focuses on oral motor skills, positioning and stability, environmental considerations, feeding behaviors, medical status and family dynamics. The appointments conclude with demonstrated treatment strategies that compose the feeding team plan. With each appointment, the team is able to draw upon the expertise of its members to create, modify and refine recommendations to optimize feeding and growth outcomes in a dynamic, integrated, and multidisciplinary manner.
The feeding team has received a referral from a local pediatrician to assess Jasmine, a former 30 week preemie with a diagnosis of moderate BPD (bronchopulmonary dysplasia). Jasmine has a chronological age of 4 1/2 months and presents with inadequate weight gain and "feeding problems."
Medical records indicate that Jasmine had a birth weight of 1450 grams, a birth length of 40.1 cm, and an OFC of 28.2 cm. She required intubation and mechanical ventilation at birth. After three days she was extubated and received O2 via nasal cannula along with a course of steroids. Although initially parenterally fed, Jasmine was transitioned to gavage feedings within 5 days postnatally using a standard preterm formula mixed to 24 kcal/oz. At 34 weeks gestation, Jasmine received a combination of bottle and gavage. At the time of discharge (37 weeks gestation), Jasmine was exclusively bottle-fed with a standard, iron fortified infant formula (20 kcal/oz). She was discharged with half a standard daily multivitamin supplement and inhaled bronchodilators prn. Her discharge weight was 2975 grams, with a length of 48.2 cm and an OFC of 33.5 cm. Since her initial discharge she has been briefly hospitalized twice with upper respiratory infections (URIs).
Jasmine was brought to the appointment by her mother, Shari. Shari describes herself as Jasmines primary caregiver, although her husband Don and her mother-in-law, Colleen, do participate in some of the feedings. Jasmines 4-year old brother, Kyle, was at home with his grandmother during this appointment.
Shari describes the following: "Feeding times are very stressful for "Jazzy" and me. She will fuss, pull away from the bottle and spit up all of the time. She tires out before she has had enough formula, and I end up spending an hour trying to get her to take all of her bottle because I know she isnt growing enough. Most feedings end with Jazzy falling asleep and me crying with a half full bottle left in my hand. I really dread mealtimes, I know she needs the calories but she never seems to enjoy feedingit was so much easier with Kyle, he loved taking a bottle, it was our quiet time together."
Diet records indicate the following "typical" feeding routine:
9:00 am |
Rice cereal, a couple bites attempted, crying and spitting
out food 4 oz formula |
1:00 pm |
4 oz formula |
5:00 pm |
Rice cereal, a few bites attempted, crying and spitting out
food 4 oz formula |
9:00 pm |
4 oz formula |
12:30 am |
4 oz formula |
Although difficult to estimate, Shari thinks that Jasmine is probably spitting up about 1/2 oz to 1-1/2 oz per day.
Jasmine is currently 6 1/2 months, with a corrected age of 4 months. Her family canceled her appointment last month, but rescheduled for todays clinic. Since last seen, Jasmines VFSS showed some microaspiration of refluxed formula, although she appeared safe with thickened liquids. Jasmine is now taking Zantac (ranitidine) and Reglan (metclopramide) for medical reflux management. Supplemental oxygen has been added during feedings.
Shari notes an improvement with reflux, particularly since starting meds. She estimates that Jasmine now spits up only "a very small amount, once every few daysusually in her crib." She has made recommended positional changes during Jasmine's feedings. The family hasnt elevated the crib mattress to 30 degrees, but is willing to try now that things have calmed down a bit. Feedings have become a little less stressful due to time limitationsbut they "still arent the highlight of our day." Jasmine does not enjoy being touched around the mouth or face and the family avoids any extra touch as much as possible. Shari reports that she has a difficult time getting the nipple into Jasmines mouth to initiate feeds. "With Kyle, some days he would eat a lot and other days not too much. It never bothered me, I knew it would even out in the end. With Jasmine, each feeding seems so important, I feel pressure that she takes in a good amount at each and every feeding."
Jasmines chronological age is 8 1/2 months. Shari hasnt tried introducing any solids and is hesitant to add something new to the feedings. She consistently includes the oral/facial play routine her therapist recommends. Shari describes continued frustration over the feeding and acknowledges it is difficult for her to stop the feeding when Jasmine begins to pull away or nod off. Shari wonders if feedings will ever feel like a normal, happy part of Jasmines life. She notes that a friend's baby that is at Jasmines corrected age is already eagerly eating solids. During the feeding observation, Jasmine did show resistance during the initiation of feeding, but once it was underway, feeding was strong and efficient. Proper positioning was maintained and no evidence of tongue protrusion was noted. Respiratory and heart rates were WNL. Cues that Jasmine was finished with the bottle-feeding were not picked up on, and Shari forced the bottle back into Jasmines mouth, even after adequate volumes had been consumed. Introduction of solids by the therapists at this appointment met with some resistance, but was tolerated and handled safely.
Diet records indicate formula intake is 44.5 oz/day providing ~150 kcal/kg/day. Current intake is supporting weight gain of 25 grams per day. Jasmines weight is 7.75 kg, length: 64.8 cm and OFC: 42.9 cm. Shari is not willing to change feedings at this point, due to ongoing concerns regarding Jasmines growth. Jasmine is developmentally at a 5-6 month age level and is ready to begin introduction of solids. Jasmine could benefit from increased oral/facial stimulation. Feeding relationship issues continue to contribute significant stress, strategies to take some of the pressure off Shari should be explored.
At todays feeding team clinic, Jasmines chronological age is 10 1/2 months. Shari reports a significant decrease in stress now that she is getting more family support with the therapies and feedings. She is quick to mention, however, that even with these improvements it still seems like Jazzy does not enjoy mealtimes, although is admittedly much less resistant. Shari reports that Jasmine will eat a nice variety of foods, similar to the guidelines provided. However Jasmine is challenged by foods with multiple textures, and will often spit out lumps. Shari is blenderizing all foods to make them smoother and increase Jasmines acceptance. She worries that they may have hit a plateau in terms of Jasmines ability to eat any textures. "Every time there is any feeding problem, a little part of me wonders if this is just an off day, or the beginning of a major backslide."
The feeding observation started with Shari initiating oral stimulation exercises suggested by the feeding therapist. The feeding confirmed an acceptance for smooth foods and single texture foods including crackers and teething biscuits. However, when multiple textures were presented, i.e., smooth foods with very small, soft lumps, the lumps were carefully spit out. When finely ground crackers were added to pureed foods, however, she hesitantly ate all that was presented. When cup drinking was attempted, a large amount of liquid fell from the corners of Jasmines mouth. When the juice was thickened with pureed fruit, better control was demonstrated. There was no choking or gagging with any of the thin or thickened liquids tried.
Gairdner and Pearson curve follow.
Age Weight Weight Percentile Length Length Percentile OFC OFC Percentile Birth 1450 g just <50th 40.1 cm just <50th 28.2 cm 50th 37 weeks CA 2975 g just <50th 48.2 cm just <50th 33.5 cm 50th 2 months CA 3775 g <10th 55.2 cm just <50th 37.8 cm just <50th 4 months CA 6.25 kg 50th 62.0 cm 50th 41.1 cm 50th 6 months CA 7.75 kg just >50th 64.8 cm 50th 42.9 cm 50th 8 months CA 8.70 kg just >50th 68.2 cm just >50th 44.2 cm just <50th To calculate average weight gain since initial hospital discharge:
The optimal rate of weight gain for premature infants has not been defined. It is common practice to aim for intrauterine growth rates (15 g/kg/day) and 0.5-1.0 cm/wk in length, during initial hospitalization. Thereafter, expected rates of growth for term infants, using corrected age, may be used for comparison. (0-4 months 20-25 g/d; 5-12 months 15 g/d)
Jasmine is gaining an average of 10.4 g/d; this is only half of the minimum recommended guidelines. In addition, Jasmine is "falling off" her own growth curve. Weight and length were close to the 50th percentile at discharge, but weight fell significantly to below the 10th percentile at 2 months CA. There is also evidence that her rate of growth for length may also be slowing. Although VLBW and ELBW infants may not experience catch-up growth in the first 1-3 years of life, their growth should not slow.
- Increased energy needs due to respiratory distress/desaturation, BPD
- Fatigue/poor endurance: limited intake
- Inappropriately early introduction of solids, displacing formula attempts
- Reflux: losses and discomfort leading to decreased intake
- Aspiration: Increased URI, illness and hospitalization, higher need, lower intake
- Oral aversion: likely due to previous medical experiences, nipple choice likely exacerbates problems with tongue protrusion, limiting intake
- Inefficient suck-due to tongue protrusion, limiting intake
- Distracting feeding environment with noise, bright lights, TV, sibling
- Hyperextended positioning-reduces intake
- Long feeding times- reinforce negative feeding experience
- Stressful feeding relationship between mom and baby
At 4 1/2 months, Jasmines corrected age (CA) is 2 months. She was born at 30 weeks gestation or 10 weeks (2 1/2 months) prematurely. Using CA one can more appropriately adjust expectations for growth and developmental milestones. Thinking in terms of corrected age (instead of chronologic age) can help decrease family disappointment regarding their baby's progress. Depending on the severity of prematurity and medical complications, the VLBW infant may face delays even when using CA.
As far as introduction of solids, a starting point would be to look at CA. In this case, 2 months is inappropriately early for introduction of solids. Complementary foods, in the form of infant cereal, are generally recommended between 4-6 months CA. In addition, the following developmental milestones indicate readiness for solids:
- Infant can sit with support and has neuromuscular control of the head and neck
- Infant can take food without choking or gagging
- Infant can indicate desire for food by opening the mouth and leaning forward
- Infant can indicate satiety by leaning back and turning away
- Strong extrusion reflex has faded, and infant demonstrates ability to swallow non-liquid foods, to transfer food from the front of the tongue to the back, and to draw in the lower lip as the spoon is removed
- Infant exhibits beginning of up and down chewing movements as opposed to sucking movements with mouth
Instructions for mixing formula to 26 kcal/oz should likely follow these recommendations: It is safe to concentrate formulas to 24 kcal/oz and then to add modular carbohydrate and/or fat products to increase the concentration above 24 kcal/oz up to 30 kcal/oz. Increasing the formula alone above 24 kcal/oz may pose a risk to an infant with immature kidneys and/or tenuous fluid balance due to the increased renal solute load. Whenever concentrating formula be sure to check percentage of total calories for macronutrients for adequacy and assure proper fluid intake for hydration.
Liquid concentrate would be preferred due to the ease of precise measurements, especially when concentrating formula. Powdered formula scoops have variable sizes and do not always equal 1 Tbsp. In addition precise measurements using scoops can be more difficult. Liquid concentrate, however, is more expensive than powdered formula and may be cost-prohibitive for some families. In that case, a careful demonstration of formula concentrating instructions would be recommended.
The feeding environment can either help optimize the feeding experience or represent a significant source of stress, which can contribute to feeding problems. The feeding environment is an important component to successful feeding and should always be evaluated whenever an infant has growth or nutrition issues. Potential sources of stress within the feeding environment can include bright lights, noise, TV, variations in ambient temperature and distracting movements of siblings or others. Feeding guidelines should be provided to help decrease exposure to a stressful feeding environment and eliminate counterproductive distractions.
- Coughing observed during sucking pauses at initial feeding assessment may indicate formula ascending into pharynx from gastroesophageal reflux (GER)
- Medical history of two upper respiratory infections (URI) and resulting hospitalizations within the 11 weeks since the initial hospital discharge
- Avoidance of bottle upon presentation may be related to discomfort of reflux and aspiration
- Delayed oral/motor skills can increase risk of aspiration cue to poor control and coordination
- Infants with increased respiratory rate may be at higher risk of aspiration
Increases in heart rate >10 beats/min and respiratory rates of 80 breaths/min, as measured during pauses in sucking, may indicate that the feeding is placing excessive demands on the infant. If this is the case, the infant may be working too hard to feed efficiently. Additional support to the cardiorespiratory system, such as supplemental oxygen or medications and/or nutritional support by way of non-oral supplements may be needed.
Evidence that difficulties exist in the feeding relationship between Shari and Jasmine include:
- Feeding is described as dreaded and stressful, often ends with mother crying, infant sleeping
- Feedings are prolonged, around an hour
- Oral aversions make feeding unpleasant for Jasmine, difficult for Shari to provide nutrition
- Reflux/aspiration/impaired respiratory status causes discomfort, negative reinforcement of feedings
- Poor reading of feeding cues such as satiety signals
- Force feeding-- Shari feels pressure to provide high amounts of calories with each feeding
- Fearful outlook of future feeding
- Oral/facial aversions due to experience with prolonged airway intubation or tube feeding, which can result in lack of infant interest/enjoyment.
- Limited exposure to oral stimulation if fed via nasograstric tube early in life. Lack of early oral sensory input can lead to hypersensitivity and hyperirritability during feeding.
- Prolonged feeding times and/or poor feeding endurance results in stress for infant and feeder.
- Oral motor problems may limit infants self-regulatory abilities (such as sucking to relieve stress and help reach an organized state), decreasing opportunities for parent-infant interaction. Preterm infants are often found to have higher rates of "difficult" temperament in the first months of life. Infants birth weight and temperament at 4 months of age are predictive of mother-infant interaction with preterm infants.
- Bonding issues due to prolonged hospitalization and medical status
- Postnatal complications can increase stress and interfere with feedings
- Lack of parental confidence regarding feeding
- Increased rates of maternal depression and anxiety with VLBW infants
- Infant perceived as fragile, mothers might feel insecure handling infant
- Growth problems can exacerbate maternal pressure at feedings
Sensitive periods are developmental windows of opportunity when infants are ready to accept advances in taste, texture, and/or feeding methods. If these "sensitive periods" are missed and the corresponding feeding experience is not provided, it may be difficult for the feeding development to progress normally. Often a child who missed feeding exposures during these sensitive periods seems to get stuck at a certain level of feeding progressions and has a difficult time making the next developmental change. This is especially important for babies with prolonged nasogastric or gastrostomy feedings. Some type of ongoing oral motor program is needed for tube-fed children, even if they are not taking foods by mouth at that time.
Finger Foods: Child should already have developmental indicators for pureed solid foods and
- Infant can sit independently and maintain balance while using hands to reach and grasp objects.
- Infant grasps large pieces of food such as thick, dry, infant toast, in a palmar grasp
Cup Drinking: Child should have demonstrated developmental indicators for pureed solid foods, finger foods and
- Infant exhibits ability to control size of sip and to manipulate liquid bolus to back of mouth and swallow without choking or gagging
Girls Growth and Development Curve
Prepared by Drs. D. Gairdner and J. Pearson. Published in Archives of Disease
in Childhood 1971.