Prediction of Feeding Performance in Preterm Infants

The effect of position on feeding performance in infants with cleft lip and palate: Quasiexperimental study

PURPOSE

This single-group, quasiexperimental study was conducted to determine the effect of feeding position on the physiological parameters and feeding performance of term-born infants with cleft lip and palate (CLP) in the preoperative period.

METHODS

The study sample consisted of 45 infants aged 0-6 months with CLP followed up preoperatively in our outpatient clinic between January 2021 and 2022. Infants who were being fed with a specialty bottle for babies with CLP and whose families consented to participate in the study were included. After 2 h of fasting, the infants were fed in the elevated supine (ESU) position for the first meal, then in the elevated side-lying (ESL) position for the second meal after another 2 h of fasting. The infants' heart rate and oxygen saturation values before, during, and after each feed and indicators of feeding performance were compared between the positions.

RESULTS

There was no significant difference between the positions in terms of heart rate and oxygen saturation before, during, or after feeding (p > .05). There was no statistically significant difference in measures of feeding performance according to the infants' feeding position (p > .05).

CONCLUSION

According to the findings obtained in this study, infants with CLP showed no statistically significant differences in heart rate, oxygen saturation, or feeding performance when fed in the ESL and ESU positions.

PRACTICE IMPLICATIONS

However, despite the lack of statistical significance, both physiological values and feeding performance tended to be better when the infants were fed in the ESL position, nurses can practice ESL position according to the infant's opposite direction of the side of the cleft lip or palate.

The Association Between Breastfeeding and Growth Among Infants with Moderately Low Birth Weight: A Prospective Cohort Study

OBJECTIVE

To assess the association between breastfeeding competency, as determined by Latch, Audible swallowing, Type of nipple, Comfort, and Hold (LATCH) and Preterm Infant Breastfeeding Behavior Scale (PIBBS) scores, and exclusive breastfeeding and growth among infants with low birth weight (LBW) in India, Malawi, and Tanzania.

STUDY DESIGN

We conducted LATCH and PIBBS assessments among mother-infant dyads enrolled in the Low Birthweight Infant Feeding Exploration (LIFE) observational study of infants with moderately LBW (1500g-2499 g) in India, Malawi, and Tanzania. We analyzed feeding and growth patterns among this cohort.

RESULTS

We observed 988 infants. We found no association between LATCH or PIBBS scores and rates of exclusive breastfeeding at 4 or 6 months. Higher week 1 LATCH and PIBBS scores were associated with increased likelihood of regaining birth weight by 2 weeks of age [LATCH: aRR 1.42 (95% CI 1.15, 1.76); PIBBS: aRR 1.15 (95% CI 1.07, 1.23); adjusted for maternal age, parity, education, residence, delivery mode, LBW type, number of offspring, and site]. Higher PIBBS scores at 1 week were associated with improved weight gain velocity (weight-for-age z-score change) at 1, 4, and 6 months [adjusted beta coefficient: 1 month 0.04 (95% CI 0.01, 0.06); 4 month 0.04 (95% CI 0.01, 0.06); and 6 month 0.04 (95% CI 0.00, 0.08)].

CONCLUSION

Although week 1 LATCH and PIBBS scores were not associated with rates of exclusive breastfeeding, higher scores were positively associated with growth metrics among infants with LBW, suggesting that these tools may be useful to identify dyads who would benefit from early lactation support.

Neurodevelopmental Outcomes following Preterm Birth and the Association with Postmenstrual Age at Discharge

OBJECTIVE

This study aimed to (1) define the prevalence of motor, cognitive, and language delays in preterm infants born <32 weeks estimated gestational age (EGA); and (2) identify the relationship between the timing of discharge from the neonatal intensive care unit (NICU) and neurodevelopmental outcome in early childhood.

STUDY DESIGN

This retrospective study of 172 preterm infants born <32 weeks EGA and hospitalized in a level-IV NICU captured medical factors, including timing of discharge, from the NICU stay. Standardized developmental testing at 1 to 2 years corrected age was conducted in the newborn follow-up clinic.

RESULTS

At 1 to 2 years corrected age, the sample had an average Bayley Scales of Infant and Toddler Development (Bayley-III) cognitive composite score of 91.5 ± 17.4, language composite score of 84.5 ± 17.3, and motor composite score of 88.9 ± 18.4. Lower EGA at birth, necrotizing enterocolitis, patent ductus arteriosus, and oxygen requirement for >28 days were independently associated with higher postmenstrual age (PMA) at NICU discharge. Higher PMA at discharge was associated with poorer cognitive outcome [p < 0.001, β = -1.1 (-1.6, -0.7)], poorer language outcome [p = 0.049, β = -0.5 (-0.9, -0.003)], and poorer motor outcome [p <0.001, β = -1.0 (-1.5, -0.5)]. For every additional week of hospitalization, scores were an average of 1.1 points lower in cognitive, 1.0 point lower in motor, and 0.5 points lower in language domains of the Bayley-III assessment.

CONCLUSION

Poorer cognitive, language, and motor outcomes were associated with longer hospitalization, even after controlling for medical risk factors known to be associated with poorer outcome. This provides further evidence for the potential role of the environment in impacting developmental outcomes of infants hospitalized in the NICU.

KEY POINTS

· There are high rates of developmental impairment among preterm infants born <32 weeks at 1 year to 2 years.. · The longer the infant is exposed to the NICU environment, the higher the risk of neurodevelopmental challenges.. · These findings provide increased motivation for optimizing the early NICU environment..

Effect of maternal voice on proportion of oral feeding in preterm infants

OBJECTIVE

To determine the impact of maternal voice exposure on oral feeding in preterm infants.

STUDY DESIGN

Prospective, unblinded, 2-center intervention study of infants born 28 0/7-34 6/7 weeks gestation. Infants were exposed twice daily to maternal voice for 20 min before attempting oral feeding. Feedings were divided into groups consisting of Baseline, Intervention, and Follow-up feeds. The study was registered at clinicaltrials.gov (NCT05181020).

RESULT

29/37 (78%) mother-infant dyads consented for the study. 25 infants with 2051 feedings were included. Compared to the preceding Baseline, Intervention feeds were associated with an adjusted 7.1 percentage-point increase in oral intake (p = 0.036) and in post-hoc analysis a 71% increased likelihood of having the highest feeding readiness score (p = 0.003).

CONCLUSION

Exposure to maternal voice prior to enteral feeding is feasible and was associated with significantly improved oral feeding proportions in preterm infants.

CLINICAL TRIAL REGISTRY

clinicaltrials.gov (NCT05181020).

Pre-feeding premature infant oral motor intervention (PIOMI) for transition from gavage to oral feeding: A randomised controlled trial

PURPOSE

To assess the performance of premature infant oral motor intervention for transition from gavage to full spoon feeding in preterm infants.

METHODS

Preterm neonates born between 28 + 0-32 + 6 weeks gestation (n = 32) were randomised into an intervention group (premature infant oral motor intervention) for five minutes twice a day along with routine care (n = 16) and a control group (routine care, n = 16) once they reached a feed volume of at least 150 ml/kg/day administered by gavage method. The primary outcome measure was time (in days) to transition from gavage to full spoon feeds.

RESULTS

The mean (SD) time to transition from gavage to full spoon feeds was attained significantly earlier in the intervention group than the control group (9.93 [5.83] vs 16.43 [10.46] days; mean difference, -6.5 days; 95% CI, -12.58 to -0.41). There was no significant difference between the two groups in terms of the duration of hospital stay, rates of physiological stability, and culture positive sepsis.

CONCLUSION

Premature infant oral motor intervention, as used in this specific population, significantly reduces the time to transition to full spoon feeds without increasing culture positive sepsis and physiological instability.

Nonnutritive Sucking Before Oral Feeding of Preterm Infants in Turkey: A Randomized Controlled Study

BACKGROUND

The use of a pacifier is recommended to support sucking reflex during transition from gavage feeding to oral feeding and ensure readiness for feeding.

PURPOSE

A randomized controlled experimental design was used to determine the effect of a pacifier given before feeding on physiological characteristics and feeding performance in preterm infants initially fed orally.

DESIGN AND METHODS

The data were obtained from preterm infants (N = 72) born before 31st gestational week, who were admitted to Newborn Intensive Care Unit of a training and research hospital affiliated with Ministry of Health between January 2017-July 2018 and met the case selection criteria. Heart rates, oxygen saturation levels and feeding performances of preterm infants in both groups before, during, and after feeding were compared.

RESULTS

Heart rates of preterm infants in the experimental group were statistically significantly lower (Experimental: 139.64 ± 10.16; Control: 149.31 ± 8.40; p < 0.01) and their oxygen saturation levels were higher (Experimental: 97.22 ± 2.22; Control: 96.33 ± 1.93; p < 0.05). Feeding efficiency rates (Experimental: 1.94 ± 1.19; Control: 0.69 ± 0.34; p < 0.01) and the percentage of food intake (Experimental: 89.5 ± 23.93; Control: 70.86 ± 27.41; p < 0.01) of newborns in the experimental group were statistically significantly higher and their feeding duration was shorter (Experimental: 10.58 ± 8.29; Control: 16.14 ± 8.31; p < 0.01).

CONCLUSIONS

It was determined that a pacifier given before feeding is effective on regulating physiological parameters and supporting feeding performance in preterm infants.

PRACTICE IMPLICATIONS

The use of a pacifier in the first transition to oral feeding in preterm infants supports their sucking reflex, calms them down, and ensures the readiness for feeding.

Effect of Tactile Experience During Preterm Infant Feeding on Clinical Outcomes

BACKGROUND

Although the survival rate of very preterm infants has improved, rates of subsequent neurobehavioral disabilities remain high. One factor implicated in poor neurobehavioral and developmental outcomes is hospitalization and inconsistent caregiving patterns in the neonatal intensive care unit. Although much underlying brain damage occurs in utero or shortly after birth, neuroprotective strategies may stop progression of damage, particularly when these strategies are used during the most sensitive periods of neural plasticity 2-3 months before term age.

OBJECTIVE

The purpose of this analysis was to test the effect of a patterned feeding experience involving a tactile component (touch and/or holding) provided during feedings on preterm infants' clinical outcomes, measured by oral feeding progress, as an early indicator of neurodevelopment.

METHODS

We used an experimental, longitudinal, two-group random assignment design. Preterm infants (n = 120) were enrolled within the first week of life and randomized to an experimental group receiving a patterned feeding experience or to a control group receiving usual feeding care.

RESULTS

Analysis of data from 91 infants showed that infants receiving touch at more than 25% of early gavage feedings achieved full oral feeding more quickly; as touch exposure increased, time from first oral to full oral feeding decreased. There was no association between holding during early gavage feedings or touch during transition feedings and time to full oral feeding.

DISCUSSION

Neurological expectation during critical periods of development is important for infants. However, a preterm infant's environment is not predictable: Caregivers change regularly, medical procedures dictate touch and holding, and care provision based on infant cues is limited. Current knowledge supports caregiving that occurs with a naturally occurring sensation (i.e., hunger), is provided in a manner that is congruent with the expectation of the neurological system, and occurs with enough regularity to enhance neuronal and synaptic development. In this study, we modeled an experience infants would "expect" if they were not in the neonatal intensive care unit and demonstrated a shorter time from first oral feeding to full oral feeding, an important clinical outcome with neurodevelopmental implications. We recommend further research to determine the effect of patterned caregiving experiences on other areas of neurodevelopment, particularly those that may occur later in life.

Neonatal feeding performance is related to feeding outcomes in childhood

AIM

Define relationships of early feeding performance with feeding outcomes in childhood, while assessing the predictive validity of the Neonatal Eating Outcome Assessment.

STUDY DESIGN

Ninety-one infants (44 preterm infants born ≤32 weeks at term-equivalent age and 47 full-term infants within 4 days of life) had feeding evaluated using the Neonatal Eating Outcome Assessment and the Neonatal Oral Motor Assessment Scale (NOMAS). At 4 years of age, 39 of these infants (22 preterm infants and 17 full-term infants; 43% follow-up rate) had parent-report measures of feeding conducted using the Behavioral Pediatrics Feeding Assessment Scale (BPFAS) and Pediatric Eating Assessment Tool (PediEAT).

RESULTS

Lower Neonatal Eating Outcome Assessment scores were related to higher PediEAT scores (p = 0.01; r = -0.44), but were not related to BPFAS scores (p = 0.17; r = -0.23). Relationships were not detected between the NOMAS and BPFAS (p = 0.35; r = 0.17), and relationships between the NOMAS and PediEAT failed to reach significance (p = 0.06; r = 0.34). There was a relationship between the BPFAS and PediEAT scores at 4 years (p < 0.001; r = 0.66). Preterm infants performed poorer than full-term infants on the Neonatal Eating Outcome Assessment (p < 0.001) and NOMAS (p < 0.001), but no differences were detected in preterm compared to full-term performance on the BPFAS (p = 0.87) and PediEAT scores (p = 0.27).

DISCUSSION

Neonatal feeding performance is an important predictor of feeding outcomes at 4 years of age. The Neonatal Eating Outcome Assessment has predictive validity, and the Pediatric Eating Assessment Tool has concurrent validity with relationships to another childhood feeding tool.

Physiological Basis of Neonatal Aerodigestive Difficulties in Chronic Lung Disease

In the United States, preterm birth rates have steadily increased since 2014. Despite the recent advances in neonatal-perinatal care, more than 40% of very low-birth-weight infants develop chronic lung disease (CLD) and almost 25% have feeding difficulties resulting in delayed achievement of full oral feeds and longer hospital stay. Establishment of full oral feeds, a major challenge for preterm infants, becomes magnified among those on respiratory support and/or with CLD. The strategies to minimize aerodigestive disorders include supporting nonnutritive sucking, developing infant-directed feeding protocols, sensory oromotor stimulation, and early introduction of oral feeds.

Preterm infant feeding performance at term equivalent age differs from that of full-term infants

OBJECTIVE

To identify differences in feeding skill performance among preterm infants at term equivalent age compared with full-term infants.

STUDY DESIGN

Ninety-two infants (44 preterm infants born ≤32 weeks gestation at term equivalent age and 48 full-term infants within 4 days of birth) had a standardized oral feeding assessment.

RESULT

Preterm infants at term equivalent age had lower Neonatal Eating Outcome Assessment scores (67.8 ± 13.6 compared with 82.2 ± 8.1; p < 0.001) and were more likely to have poor arousal (p = 0.04), poor tongue positioning (p = 0.04), suck-swallow-breathe discoordination (p < 0.001), inadequate sucking bursts (p = 0.01), tonal abnormalities (p < 0.001), discoordination of the jaw and tongue during sucking (p < 0.001), lack of positive engagement with the feeder and/or discomfort (p < 0.001), signs of aspiration (p < 0.001), difficulty regulating breathing (p < 0.001), and have an inability to maintain an appropriate state (p < 0.001), and complete the feeding (<0.001).

CONCLUSION

A broad range of feeding-related difficulties appear to remain evident in preterm infants at term equivalent age.

Feeding and swallowing impairment in children with stroke and unilateral cerebral palsy: a systematic review

AIM

This systematic review targeted frequency estimates of dysphagia (feeding and swallowing problems), related health outcomes, and caregiver burden in children with stroke or unilateral cerebral palsy (CP).

METHOD

Six electronic databases were searched from their inception to November 2017 along with a manual search of eight relevant journals. Two blinded raters assessed abstracts and full articles for eligibility. Discrepancies were resolved by consensus. Accepted articles were evaluated for quality. Data were extracted and analysed descriptively.

RESULTS

Of 1660 abstracts, five met inclusion criteria, of which three focused on stroke and two unilateral CP. Across studies, operational definitions of feeding and swallowing varied. Insufficient details were provided on assessment methods and timing. Reported frequencies of dysphagia ranged from 24.2% to 88.6%. One study reported dysphagia-related health outcomes and none reported caregiver burden.

INTERPRETATION

These results suggest that dysphagia is common in children with stroke and unilateral CP; however, its frequency is yet unknown as is its impact on health and caregiver burden. Availability of a standardized tool to identify dysphagia in these children accurately is a recommended first step to address this evidence gap.

WHAT THIS PAPER ADDS

There is limited data on the incidence of dysphagia after childhood stroke and unilateral cerebral palsy. Available evidence shows reported dysphagia frequencies from 24.2% to 88.6%. Only one study reported on dysphagia-related health outcomes. No study reported on caregiver burden.

Oral Feeding Success: A Concept Analysis

BACKGROUND

The term "oral feeding success" (OFS) is frequently used in clinical practice and research. However, OFS is inconsistently defined, which impacts the ability to adequately evaluate OFS, identify risk factors, and implement interventions in clinical practice and research.

PURPOSE

To develop the defining attributes, antecedents, and consequences for the concept of OFS in preterm infants during their initial hospitalization.

METHODS

PubMed, CINAHL, and PsycINFO databases were searched for English articles containing the key words "oral feeding success" and "preterm infants." The Walker and Avant method for concept analysis was employed.

RESULTS

Sixteen articles revealed the defining attributes, antecedents, and consequences. Defining attributes included (1) physiologic stability; (2) full oral feeding; and (3) combined criteria of feeding proficiency (≥30% of the prescribed volume during the first 5 minutes), feeding efficiency (≥1.5 mL/min over the entire feeding), and intake quantity (≥80% of the prescribed volume).

IMPLICATIONS FOR PRACTICE

The 3 defining attributes may be used in clinical practice to consistently evaluate OFS. The antecedents of OFS provide clinicians with a frame of reference to assess oral feeding readiness, identify risk factors, and implement effective interventions. The consequences of OFS allow clinicians to anticipate challenges when OFS is not achieved and create a care plan to support the infants.

IMPLICATIONS FOR RESEARCH

The empirical referents of OFS provide consistent and clear operational definitions of OFS for use in research. The antecedents and consequences may guide researchers to select specific measures or covariates to evaluate valid measures of OFS.

Effect of oral stimulation on feeding performance and weight gain in preterm neonates: a randomised controlled trial

BACKGROUND

In preterm infants, oral stimulation enhances muscle tone and movement which facilitates normal oral motor developmental patterns improving oral feeding performance.

AIM

To study the effects on feeding performance, transition to independent oral feeding, weight gain and length of hospital stay of an oral stimulation programme in preterm neonates.

STUDY DESIGN

This randomised controlled trial was conducted in a tertiary care teaching hospital over a period of 10 months. Altogether, 102 preterm neonates (30-34 weeks gestation) were randomised into the intervention group (oro-motor stimulation for 5 min twice a day, n = 51) or the control group (routine care only, n = 51). The primary outcome measures were feeding performance, and transition period to reach independent oral feeding.

RESULTS

There was better feeding performance (overall intake and rate of milk transfer), shorter transition to independent oral feeding, better weight gain and shorter length of hospital stay in the intervention group (p < 0.001).

CONCLUSIONS

Oral stimulation improves feeding performance, weight gain rate and reduces hospital stay in preterm neonates born between 30 and 34 weeks of gestation. [Trial registration number: CTRI/2017/05/008630].

Effects of two different feeding positions on physiological characteristics and feeding performance of preterm infants: A randomized controlled trial

PURPOSE

The aim of this randomized controlled study was to determine the effect of semielevated side-lying (ESL) and semielevated supine (ESU) positions, which are used to bottle-feed preterm infants, on their physiological characteristics and feeding performance.

DESIGN AND METHODS

The sample consisted of preterm infants who were born in the 31st gestational week and below, and met the inclusion criteria. A randomization was provided in the sample group with a total of 80 infants including 38 infants in the ESL (experimental) group and 42 infants in the ESU (control) group. Both groups were compared in terms of their SpO2 values, heart rates, and feeding performances before, during, and after the feeding. The data were obtained by using a form for infant descriptive characteristics, feeding follow-up form, a Masimo Radical-7 pulse oximeter device, and a video camera.

RESULTS

It was determined that the infants in the ESL group had statistically significantly higher SpO2 values (ESL: 96.77 ± 2.51; ESU: 93.48 ± 5.63) and lower heart rates (ESL: 155.87 ± 11.18; ESU: 164.35 ± 6.00) during the feeding compared to the infants in the ESU group (p < .05). Besides, oxygen saturation levels of the infants in the ESU group decreased more (p < .01) and their heart rates increased more (p < .05) during the feeding than those obtained before the feeding compared to the infants in the ESL group.

PRACTICE IMPLICATIONS

The ESL position has a more positive effect on oxygen saturation and heart rate of infants and it is more effective in providing a physiological stabilization during the feeding, compared to the ESU position. According to these results, the ESL position can be recommended for preterm feeding.

Neonatal Eating Outcome Assessment: tool development and inter-rater reliability

AIM

To define the process of tool development and revision for the Neonatal Eating Outcome (NEO) Assessment and to report preliminary inter-rater reliability.

METHODS

Tool development consisted of a review of the literature and observations of feeding performance among 178 preterm infants born ≤32 weeks gestation. 11 neonatal therapy feeding experts provided structured feedback to establish content validity and define the scoring matrix. The tool was then used to evaluate feeding in 50 preterm infants born ≤32 weeks of gestation and 50 full-term infants. Multiple revisions occurred at each stage of development. Finally, six neonatal occupational therapists participated in reliability testing by independently scoring five videos of oral feeding of preterm infants using version 4 of the tool.

RESULTS

The intraclass correlation for the 'prefeeding' score was 0.71 (0.37-0.96), and the intraclass correlation for the 'total' score was 0.83 (0.56-0.98).

CONCLUSION

The 'total' score had good to excellent reliability. Fleiss' Kappa scores for all 18 scorable items ranged from slight agreement to moderate agreement. Items with the lowest Kappa scores were revised, and additional feedback from therapists engaged in reliability testing was incorporated, resulting in final version 5.

Using Functional Connectivity Magnetic Resonance Imaging to Measure Brain Connectivity in Preterm Infants

BACKGROUND

The use of functional connectivity magnetic resonance imaging (fcMRI) in research involving preterm infants is relatively new, and its feasibility in this population is not fully established. However, fcMRI images reveal functional neural connections that may be useful in establishing the mechanisms of neuroprotective interventions in preterm infants.

OBJECTIVE

The aim of this study was to determine the feasibility of using fcMRI to measure differences in functional neural connections in nursing intervention studies.

METHODS

A pilot study was conducted as part of a longitudinal, randomized controlled trial (RCT) testing the effect of a feeding intervention on neurodevelopmental and clinical outcomes of preterm infants randomly assigned to one of two groups: a patterned feeding experience (PFE) group and a usual feeding care (UFC) group. The fcMRIs were done at term-equivalent age. Visual, motor, and default mode networks were analyzed.

RESULTS

Seven infants were studied (four were in the PFE group, and three were in the UFC group). Participants were selected sequentially from the parent RCT. Clear images were obtained from all participants. Differences were noted among PFE and UFC infants: Infants receiving PFE were hyperconnective in the default mode (caudate, anterior cingulate cortex, and precuneus) and motor networks (middle temporal and middle occipital areas) and hypoconnective in others areas of the default mode (hippocampal and lingual regions) and motor networks (precentral and superior frontal cortices) relative to UFC infants. No differences were noted in visual networks.

DISCUSSION

The feasibility of using fcMRI at term-equivalent age in preterm infants who participated in an RCT on the effect of a nursing intervention was shown. Differences in connectivity among infants by group were detected. Further research is needed to show the benefit of fcMRI in studies of preterm infants given the costs of the procedure as well as the uncertain relationship of this early outcome measure to long-term neurodevelopment.

The Relationship Between Behavioral States and Oral Feeding Efficiency in Preterm Infants

BACKGROUND

The relationship between behavioral states (alert, sleep, drowsy, and crying) and oral feeding efficiency in preterm infants is not well understood.

PURPOSE

To determine the relationship between behavioral states and feeding efficiency in preterm infants.

METHODS

This correlational study was conducted as a secondary analysis from a randomized controlled trial. Medically stable preterm infants born between 29 and 34 weeks' gestational age participated. Baseline data from the randomized controlled trial (week 0), 1 minute prior to feeding, were used. Behavioral states were coded by 2 blinded coders. Oral feeding efficiency (mL/min) was calculated as the amount of intake over the first 10 minutes of feeding.

RESULTS

Data from 147 infants were included. The proportion of time spent in alert states (β = .76, F = 11.29, P ≤ .05), sleep states (β = -1.08, F = 25.26, P ≤ .05), and crying (β = 1.50, F = 12.51, P ≤ .05) uniquely predicted oral feeding efficiency.

IMPLICATIONS FOR PRACTICE

Comprehensive assessment of behavioral states and infant characteristics for oral feeding readiness is crucial. Alert states are optimal for oral feeding. Forced oral feeding when infants are sleeping should be avoided. Infants in crying or drowsy states prior to feeding should be closely evaluated. Sleeping or drowsy infants may benefit from interventions (eg, oral sensory stimulation, nonnutritive sucking, or multisensory intervention) to support transition to alert states prior to feeding.

IMPLICATIONS FOR RESEARCH

Future research should evaluate behavioral states prior to and during feeding and their relationship to oral feeding efficiency.

Instruments for assessing readiness to commence suck feeds in preterm infants: effects on time to establish full oral feeding and duration of hospitalisation

BACKGROUND

One of the most challenging milestones for preterm infants is the acquisition of safe and efficient feeding skills. The majority of healthy full term infants are born with skills to coordinate their suck, swallow and respiration. However, this is not the case for preterm infants who develop these skills gradually as they transition from tube feeding to suck feeds. For preterm infants the ability to engage in oral feeding behaviour is dependent on many factors. The complexity of factors influencing feeding readiness has led some researchers to investigate the use of an individualised assessment of an infant's abilities. A limited number of instruments that aim to indicate an individual infant's readiness to commence either breast or bottle feeding have been developed.

OBJECTIVES

To determine the effects of using a feeding readiness instrument when compared to no instrument or another instrument on the outcomes of time to establish full oral feeding and duration of hospitalisations.

SEARCH METHODS

We used the standard search strategy of the Cochrane Neonatal Review group to search the Cochrane Central Register of Controlled Trials (CENTRAL 2016, Issue 1), MEDLINE via PubMed (1966 to 22 February 2016), EMBASE (1980 to 22 February 2016), and CINAHL (1982 to 22 February 2016). We also searched clinical trials' databases, conference proceedings, and the reference lists of retrieved articles for randomised controlled trials and quasi-randomised trials.

SELECTION CRITERIA

Randomised and quasi-randomised trials comparing a formal instrument to assess a preterm infant's readiness to commence suck feeds with either no instrument (usual practice) or another feeding readiness instrument.

DATA COLLECTION AND ANALYSIS

The standard methods of Cochrane Neonatal were used. Two authors independently screened potential studies for inclusion. No studies were found that met our inclusion criteria.

MAIN RESULTS

No studies met the inclusion criteria.

AUTHORS' CONCLUSIONS

There is currently no evidence to inform clinical practice, with no studies meeting the inclusion criteria for this review. Research is needed in this area to establish an evidence base for the clinical utility of implementing the use of an instrument to assess feeding readiness in the preterm infant population.

Patterned feeding experience for preterm infants: study protocol for a randomized controlled trial

BACKGROUND

Neurobehavioral disabilities occur in 5-15% of preterm infants with an estimated 50-70% of very low birth weight preterm infants experiencing later dysfunction, including cognitive, behavioral, and social delays that often persist into adulthood. Factors implicated in poor neurobehavioral and developmental outcomes are hospitalization in the neonatal intensive care unit (NICU) and inconsistent caregiving patterns. Although much underlying brain damage occurs in utero or shortly after birth, neuroprotective strategies can stop lesions from progressing, particularly when these strategies are used during the most sensitive periods of neural plasticity occurring months before term age. The purpose of this randomized trial is to test the effect of a patterned feeding experience on preterm infants' neurobehavioral organization and development, cognitive function, and clinical outcomes.

METHODS

This trial uses an experimental, longitudinal, 2-group design with 120 preterm infants. Infants are enrolled within the first week of life and randomized to an experimental group receiving a patterned feeding experience from the first gavage feeding through discharge or to a control group receiving usual feeding care experience. The intervention involves a continuity of tactile experiences associated with feeding to train and build neuronal networks supportive of normal infant feeding experience. Primary outcomes are neurobehavioral organization as measured by Neurobehavioral Assessment of the Preterm Infant at 3 time points: the transition to oral feedings, NICU discharge, and 2 months corrected age. Secondary aims are cognitive function measured using the Bayley Scales of Infant and Toddler Development, Third Edition at 6 months corrected age, neurobehavioral development (sucking organization, feeding performance, and heart rate variability), and clinical outcomes (length of NICU stay and time to full oral feeding). The potential effects of demographic and biobehavioral factors (perinatal events and conditions of maternal or fetal/newborn origin and immunologic and genetic biomarkers) on the outcome variables will also be considered.

DISCUSSION

Theoretically, the intervention provided at a critical time in neurologic system development and associated with a recurring event (feeding) should enhance neural connections that may be important for later development, particularly language and other cognitive and neurobehavioral organization skills.

TRIAL REGISTRATION

NCT01577615 11 April 2012.

Effect of four approaches to oral feeding progression on clinical outcomes in preterm infants

Background. The purpose of this study of preterm infants was to test the effect of four approaches to the time of transition from gavage to full oral feedings, time to discharge, and weight gain during the transition. Methods. A randomized experimental design was used with four intervention groups: early start (32 weeks' postmenstrual age)/slow progressing experience (gradually increasing oral feedings offered per day); early start/maximum experience (oral feedings offered at every feeding opportunity); late start (34 weeks' postmenstrual age)/slow progressing experience; and late start/maximum experience. Results. The analysis included 86 preterm infants. Once oral feedings were initiated, infants in the late start/maximum experience group achieved full oral feeding and were discharged to home significantly sooner than infants in either early start group. Although not significantly different, these infants also achieved these outcomes sooner than infants in the late start/slow progressing experience group. There were no differences in weight gain across groups. Conclusions. Results suggest starting oral feedings later in preterm infants may result in more rapid transition to full oral feedings and discharge although not at early postnatal ages. Provision of a more consistent approach to oral feeding may support infant neurodevelopment and reduce length of hospitalization.

LATCH scores and milk intake in preterm and term infants: a prospective comparative study

OBJECTIVES

We aimed to detect the breastmilk intake in preterm and term infants and to determine if the LATCH scoring system (latch; audible swallowing; type of nipple; comfort [breast/nipple]; hold [positioning]) could be helpful to denote that infants have taken enough breastmilk according to their postnatal age and weight.

MATERIALS AND METHODS

Sixty-six breastfeeding sessions were monitored and scored simultaneously by using the LATCH scoring system. The weight of the 66 infants (33 preterm, 33 term) was measured before and after a breastfeeding session, and thereby milk intake by breastfeeding was determined. The expected amount of milk volume that infants should receive for each feeding session was calculated according to the postnatal age and weight. The breastmilk intake by breastfeeding was compared with LATCH scores and the expected milk volume for each feeding.

RESULTS

We observed that 25 term infants (75.8%) took 100% of the expected milk volume for each feeding session, compared with two preterm infants (2.1%) (p=0.009). The median LATCH scores were 7.0 (minimum-maximum=5-9) in preterm babies and 9 (minimum-maximum=7-10) in term babies (p<0.0001). Term babies could consume 95.4% of the expected milk volume for each feeding session, whereas this ratio was only 45% in preterm babies. In each group, babies receiving a score of ≥7 took at least 50% of the expected milk volume for each feeding session. In each group, higher LATCH scores were associated with higher median intake, but the minimum and maximum intake for each LATCH score revealed marked variability.

CONCLUSIONS

High LATCH scores (7-10) may be helpful to determine that infants take at least 50% of the expected breastmilk volume for each feeding in both preterm and term infants. However, LATCH scores cannot substitute for test weights in premature infants because of variability in minimum and maximum milk intake per LATCH score.

Parental experience learning to feed their preterm infants

PURPOSE

Although extensive research has been conducted on preterm infant oral feeding, few investigations have examined parents' experiences learning to feed orally their preterm infant while in the neonatal intensive care unit (NICU). As such, the aim of this study was to explore parental learning experiences to gain a better understanding of the process parents use in learning to feed their preterm infant.

SUBJECTS

Parents included in the investigation were 18 years of age or older with a medically stable preterm infant who was less than 36 weeks' gestational age at birth, free of congenital malformations, and feeding orally.

DESIGN

This investigation used phenomenology to explore the depth and richness of parental experience with the process of learning to feed orally their preterm infant.

METHODS

Participants were recruited from a university-affiliated women's hospital with a level III NICU. Purposive sampling was used to ensure that all participants were familiar with the experience of interest. Data collection consisted of personal interviews, which were conducted in a private consultation room located within the NICU. In instances where both the infant's mother and father chose to participate, the interviews were conducted separately on the same day.

MAIN OUTCOME MEASURES

Twelve mothers and 8 fathers participated in semistructured interviews. For 8 mothers and 6 fathers, this was their first child. This was the first preterm infant for all participants. From the parental experience, the following 3 themes were identified: an emotional experience, learn as you go, and it is technical.

PRINCIPAL RESULTS

Parents noted that feeding encompassed both positive and negative emotions, that learning was a process that nurses played an instrumental role in, and that feeding a preterm infant could be very technical, requiring extra skills for feeding success.

CONCLUSIONS

Nurses can play a key role in helping parents learn by acknowledging both positive and negative feelings about the feeding process, recognizing parents' learning needs, and by teaching and demonstrating appropriate feeding techniques.

Preterm infants' orally directed behaviors and behavioral state responses to the integrated H-HOPE intervention

Preterm infants are challenged by immature infant behavioral organization which may negatively influence their ability to oral feed. The purpose of this study was to determine whether the integrated H-HOPE (Hospital to Home: Optimizing the Infant's Environment) intervention would improve infant behavioral organization by increasing the frequency of orally directed behaviors and the proportion of time spent in an alert behavioral state when offered prior to oral feeding. Mother-infant dyads (n=198) were randomly assigned to the H-HOPE intervention or the Attention Control groups. Infants were born at 29-34 weeks gestation and were clinically stable. Mothers had at least two social environmental risk factors such as minority status or less than high school education. H-HOPE is an integrated intervention that included (1) twice-daily infant directed stimulation using the ATVV intervention (auditory, tactile, visual, and vestibular stimuli) and (2) maternal participatory guidance sessions by a nurse-community advocate team. Orally directed behaviors and behavioral states were assessed weekly prior to feeding during hospitalization when infants were able to feed orally. There were no differences between the groups at baseline (Day 0, prior to the initiation of the integrated H-HOPE intervention). We observed a pattern of increased frequency of orally directed behaviors in the H-HOPE intervention group when compared to the Attention Control group, however, the proportion of time spent in an alert behavioral state remained stable in both groups over the course of the study. On Day 7, the H-HOPE intervention group exhibited a significantly higher mean frequency of orally directed behaviors than the Attention Control group (12.6 vs. 7.1 pre-intervention, 51.8 vs. 33.2 during intervention, 4.3 vs. 3.2 immediately after intervention, and 8.9 vs. 5.3 immediately prior to feeding). On Day 7, the H-HOPE intervention group exhibited a significantly higher proportion of time spent in an alert behavioral state only during intervention (0.26 vs. 0.11) and immediately after intervention (0.28 vs. 0.06). These findings are suggestive that the integrated H-HOPE intervention facilitated infant behavioral organization for clinically stable infants born between 29 and 34 weeks gestation. The orally directed behaviors appear to be an important indicator of the infant's preparation for feeding, and when used in conjunction with assessment of behavioral states, are especially valuable to the clinician. Use of this combined assessment approach in practice would strengthen clinician assessment for initiation of (beginning the first oral feeding) and daily preparation for oral feeding in preterm infants.

Setting the stage for successful oral feeding: the impact of implementing the SOFFI feeding program with medically fragile NICU infants

To evaluate the impact of implementing the Supporting Oral Feeding in Fragile Infants (SOFFI) program in a tertiary-level neonatal intensive care unit (NICU) on the oral feeding, growth, and length of stay outcomes of a heterogeneous population of medically fragile infants at discharge and feeding and growth outcomes postdischarge at 3 to 5 months postterm. Data related to feeding, growth, and length of stay from a convenience sample of 81 infants recruited pre-SOFFI training were compared with data for 75 infants recruited post-SOFFI training of the NICU staff. Subjects were not excluded on the basis of level of illness or medical diagnoses. To establish comparability of subject groups, infants were assigned scores using the Neonatal Medical Index. At 3 to 5 months postterm, semistructured parent phone interviews related to feeding and growth at home were conducted (n = 128). Post-SOFFI infants born at less than 37 weeks' gestation achieved full oral feedings in significantly fewer days than pre-SOFFI infants (P = .01). Time to achieve full oral feedings was not significantly different in post-SOFFI infants born at 37 or more weeks' gestation. Growth and length of stay were not significantly different at discharge. At follow-up, parents of post-SOFFI infants reported significantly fewer feeding problems overall (P = .01), less arching (P = .003), less vomiting (P = .006), and fewer infants seeing feeding specialists (P = .03). Results of the study support that NICU implementation of the SOFFI feeding program positively influences feeding outcomes before and following discharge.

A model of neurodevelopmental risk and protection for preterm infants

The purpose of this article is to introduce a model of neurodevelopmental risk and protection that may explain some of the relationships among biobehavioral risks, environmental risks, and caregiving behaviors that potentially contribute to neurobehavioral and cognitive outcomes. Infants born before 30 weeks of gestation have the poorest developmental prognosis of all infants. These infants have lengthy hospitalization periods in the neonatal intensive care unit (NICU,) an environment that is not always supportive of brain development and long-term developmental needs. The model supports the premise that interventions focused on neuroprotection during the neonatal period have the potential to positively affect long-term developmental outcomes for vulnerable very preterm infants. Finding ways to better understand the complex relationships among NICU-based interventions and long-term outcomes are important to guiding caregiving practices in the NICU.

Effects of the neonatal intensive care unit environment on preterm infant oral feeding

OBJECTIVE

To examine the effect of neonatal intensive care unit environmental characteristics (perceived levels of light and sound, and time of day) in open unit wards and single-family rooms (SFRs) on oral feeding outcomes in preterm infants.

DESIGN

Data were collected at each scheduled oral feeding for 87 preterm infants from the first oral feeding until discharge. Data included the prescribed volume of feeding and the volume consumed, the infant's level of wakefulness before feeding, and the nurse's perception of light and sound.

RESULTS

Data were collected on 5111 feedings in the ward unit and 5802 in the SFR unit from feedings involving 87 preterm infants. Light and sound were rated significantly lower in the SFR (χ² = 139 and 1654.8, respectively). Feeding times of 9 am, 12 noon, and 3 pm were associated with the highest perceived levels of light and sound, regardless of unit design (P < 0.0001). Moderate light levels and feeding times of 12, 3, and 6 am were associated with improved feeding outcomes. Infants consumed a greater proportion of their prescribed feeding volume when fed in the open ward and when awake before feeding.

CONCLUSION

Further study on the clinical effects of unit design is needed, as is study on the effects of environmental stimuli, so that interventions can be appropriately developed and tailored for infants needing the most support for optimal development.

Feeding behaviour and performance of preterm neonates on Paladai feeding

AIM

To evaluate the feeding behaviour and performance of preterm neonates receiving feeds by paladai (a small beaked receptacle).

METHODS

We enrolled stable neonates - 10 each in 28-30 weeks [group I] and 31-32 weeks gestation [group II], and offered them paladai feeds. We recorded the feeding sessions on alternate days until they were on full enteral feeds. The outcome variables were (1) feeding behaviour, as assessed by changes in states of wakefulness, oromotor functions and coordination between breathing and swallowing; (2) feeding performance, as assessed by proficiency and efficiency.

RESULTS

A total of 47 and 27 sessions were studied in groups I and II, respectively. The median postconceptional age (PCA) at start of paladai feeding was 30 (range, 29-32) and 32 (31-32) weeks in the two groups. The infants accepted paladai feedings in all behavioural states. Incoordination between feeding and breathing was observed in about 25% of the sessions in both the groups. We observed a rapid improvement in feeding performance with experience - the median proficiency improved from 5.5 to 10.1 mL/min and 6.2-11.5 mL/min in groups I and II, respectively. The proficiency of group I infants at a median PCA of 30.9 weeks was higher than that of group II infants at median PCA 31.7 weeks.

CONCLUSION

Stable preterm neonates can be fed with paladai from 30 weeks PCA. The oropharyngeal ability is possibly influenced more by the postnatal experience than by maturity at birth.

Oral-motor function and feeding intervention

This article presents the elements of the Oral Motor Intervention section of the Infant Care Path for Physical Therapy in the Neonatal Intensive Care Unit (NICU). The types of physical therapy interventions presented in this path are evidence based as well as infant driven and family focused. In the context of anticipated maturation of suck-swallow-breathe coordination, the timing and methods for initiation of oral feedings and transition from gavage to full breast or bottle-feedings are presented with supporting evidence.

Changes in Oral Feeding in Preterm Infants Two Weeks After Hospital Discharge

The purpose of this analysis was to measure changes in preterm infant feeding skill between discharge and two weeks post-discharge. Data were from two samples - 22 preterm infants who participated in a non-experimental study of feeding readiness and 63 preterm infants who participated in a study of four oral feeding approaches. Both studies were approved by the institutional review board; parents gave informed consent. The Early Feeding Skills Assessment (EFSA) was used to measure feeding skills. Data were analyzed descriptively and by ANOVA and regression. Analysis revealed that feeding skills changed selectively from discharge to post-discharge and that discharge skills were predictive of post-discharge skill. Changes that occur in feeding skills during the immediate post-discharge period have received little attention from researchers. The findings suggest that enhanced pre-discharge assessment and parent teaching maybe necessary to reduce reported parental stress associated with feeding the newly discharged infant and to promote a positive feeding experience.

Evolution and development of dual ingestion systems in mammals: notes on a new thesis and its clinical implications

Traditionally, the development of oral feeding is viewed as a continuous, unitary process in which reflex-dominated sucking behavior gives rise to a more varied and volitional feeding behavior. In contrast, we consider the thesis that the infant develops two separable ingestive systems, one for suckling and one for feeding. First, we apply an evolutionary perspective, recognizing that suckling-feeding is a universal, mammalian developmental sequence. We find that in mammalian evolution, feeding systems in offspring were established prior to the evolution of lactation, and therefore suckling is a separable feature that was added to feeding. We next review an experimental literature that characterizes suckling and feeding as separable in terms of their topography, sensory controls, physiological controls, neural substrates, and experience-based development. Together, these considerations constitute a view of “dual ingestive systems.” The thesis, then, is that suckling is not a simple precursor of feeding but is a complete behavior that emerges, forms, and then undergoes a dissolution that overlaps with the emergence of independent feeding. This thesis guides us to focus differently on the challenges of properly managing and facilitating oral ingestion in infants, especially those born preterm, prior to the developmental onset of suckling.

Assessment of Infant Movement With a Compact Wireless Accelerometer System

There is emerging data that patterns of motor activity early in neonatal life can predict impairments in neuromotor development. However, current techniques to monitor infant movement mainly rely on observer scoring, a technique limited by skill, fatigue, and inter-rater reliability. Consequently, we tested the use of a lightweight, wireless, accelerometer system that measures movement and can be worn by premature babies without interfering with routine care. We hypothesized that this system would be useful in assessing motor activity, in identifying abnormal movement, and in reducing the amount of video that a clinician would need to review for abnormal movements. Ten preterm infants in the NICU were monitored for 1 h using both the accelerometer system and video. A physical therapist trained to recognize cramped-synchronized general movements scored all of the video data by labeling each abnormal movement observed. The parameters of three different computer models were then optimized based on correlating features computed from accelerometer data and the observer’s annotations. The annotations were compared to the model’s prediction on unseen data. The trained observer identified cramped-synchronized general movements in 6 of the 10 infants. The computer models attained between 70% and 90% accuracy when predicting the same observer label for each data point. Our study suggests that mini-accelerometers may prove useful as a clinical tool assessing patterns of movement in preterm infants.

Instruments for assessing readiness to commence suck feeds in preterm infants: effects on time to establish full oral feeding and duration of hospitalisation

BACKGROUND

One of the most challenging milestones for preterm infants is the acquisition of safe and efficient feeding skills. The majority of healthy full term infants are born with skills to coordinate their suck, swallow and respiration. However, this is not the case for preterm infants who develop these skills gradually as they transition from tube feeding to suck feeds. For preterm infants the ability to engage in oral feeding behaviour is dependent on many factors. The complexity of factors influencing feeding readiness has led some researchers to investigate the use of an individualised assessment of an infant's abilities. A limited number of instruments that aim to indicate an individual infant's readiness to commence either breast or bottle feeding have been developed.

OBJECTIVES

To determine the effects of using a feeding readiness instrument when compared to no instrument or another instrument on the outcomes of time to establish full oral feeding and duration of hospitalisation.

SEARCH METHODS

We used the standard methods of the Cochrane Neonatal Review Group, including a search of the Cochrane Central Register of Controlled Trials (The Cochrane Library 2010, Issue 2), MEDLINE via EBSCO (1966 to July 2010), EMBASE (1980 to July 2010), CINAHL via EBSCO (1982 to July 2010), Web of Science via EBSCO (1980 to July 2010) and Health Source (1980 to July 2010). Other sources such as cited references from retrieved articles and databases of clinical trials were also searched. We did not apply any language restriction. We updated this search in March 2012.

SELECTION CRITERIA

Randomised and quasi-randomised trials comparing a formal instrument to assess a preterm infant's readiness to commence suck feeds with either no instrument (usual practice) or another feeding readiness instrument.

DATA COLLECTION AND ANALYSIS

The standard methods of the Cochrane Neonatal Review Group were used. Two authors independently screened potential studies for inclusion. No studies were found that met our inclusion criteria.

MAIN RESULTS

No studies met the inclusion criteria.

AUTHORS' CONCLUSIONS

There is currently no evidence to inform clinical practice, with no studies meeting the inclusion criteria for this review. Research is needed in this area to establish an evidence base for the clinical utility of implementing the use of an instrument to assess feeding readiness in the preterm infant population.

The SOFFI Reference Guide: text, algorithms, and appendices: a manualized method for quality bottle-feedings

The Support of Oral Feeding for Fragile Infants (SOFFI) method of bottle-feeding rests on quality evidence along with implementation details drawn from clinical experience. To be clear, the SOFFI Method is not focused on the amount of food taken in but on the conduct of the feeding and the development of competent infant feeding behavior that, consequently, assures the intake of food necessary for growth. The unique contribution of the SOFFI method is the systematic organization of scientific findings into clinically valid and reliable, easily followed algorithms, and a manualized Reference Guide for the assessments, decisions, and actions of a quality feeding.A quality feeding is recognized by a stable, self-regulated infant and a caregiver who sensitively (responsively) adjusts to the infant's physiology and behavior to realize an individualized feeding experience in which the infant remains comfortable and competent using his nascent abilities to ingest a comfortable amount of milk/formula. The SOFFI Reference Guide and Algorithms begin with prefeeding adjustments of the environment and follow step by step through a feeding with observations of specific infant behavior, decisions based on that behavior, and specific actions to safeguard emerging abilities and the quality of the experience. An important aspect the SOFFI Reference Guide and Algorithms is the clarity about pausing and stopping the feeding on the basis of the infant's physiology and behavior rather than on the basis of the amount ingested. The specificity of each observation, decision, and action enables nurses at all levels of experience to provide quality, highly individualized, holistic feedings. Throughout the course of feeding in the NICU, the nurse conveys to parents the integrated details (observations, decisions, and actions) particular to their infant, thus passing on the means for parents to become competent in quality feeding, to enjoy feeding time into the future, and to gain in confidence as they watch their infants grow.

Supporting oral feeding in fragile infants: an evidence-based method for quality bottle-feedings of preterm, ill, and fragile infants

Successful oral feeding of preterm and other ill and fragile infants is an interactive process that requires (1) sensitive, ongoing assessment of an infant's physiology and behavior, (2) knowledgeable decisions that support immediate and long-term enjoyment of food, and (3) competent skill in feeding. Caregivers can support feeding success by using the infant's biological and behavioral channels of communication to inform their feeding decisions and actions. The Supporting Oral Feeding in Fragile Infants (SOFFI) Method is described here with text, algorithms, and reference guides. Two of the algorithms and the reference guides are published separately as Philbin, Ross. SOFFI Reference Guides: Text, Algorithms, and Appendices (in review). The information in all of these materials is drawn from sound research findings and, rarely, when such findings are not available, from expert, commonly accepted clinical practice. If the quality of a feeding takes priority over the quantity ingested, feeding skill develops pleasurably and at the infant's own pace. Once physiologic organization and behavioral skills are established, an affinity for feeding and the ingestion of sufficient quantity occur naturally, often rapidly, and at approximately the same postmenstrual age as volume-focused feedings. Nurses, therapists, and parents alike can use the SOFFI Method to increase the likelihood of feeding success in the population of infants at risk for feeding problems that emerge in infancy and extend into the preschool years.

Making the literature palatable at the bedside: Reference poster promotes oral feeding best practice

Neonatal nurses often draw upon prior experiences and intuition to feed neonates. Such experience and skill vary from nurse to nurse and may not be based on recent research, nor tailored to each neonate's feeding skill. An evidence-based neonatal oral feeding guideline was produced to improve oral feeding practices among nurses and parents. The implementation was initially less than ideal, resulting in poor compliance. A bedside reference poster was designed to serve as a visual succinct reminder of the oral feeding guideline.

A model of neurodevelopmental risk and protection for preterm infants

The purpose of this article is to introduce a model of neurodevelopmental risk and protection that may explain some of the relationships among biobehavioral risks, environmental risks, and caregiving behaviors that potentially contribute to neurobehavioral and cognitive outcomes. Infants born before 30 weeks of gestation have the poorest developmental prognosis of all infants. These infants have lengthy hospitalization periods in the neonatal intensive care unit (NICU,) an environment that is not always supportive of brain development and long-term developmental needs. The model supports the premise that interventions focused on neuroprotection during the neonatal period have the potential to positively affect long-term developmental outcomes for vulnerable very preterm infants. Finding ways to better understand the complex relationships among NICU-based interventions and long-term outcomes are important to guiding caregiving practices in the NICU.

Infant feeding in the neonatal unit

Infants admitted to a neonatal unit (NNU) are frequently unable to feed by breast or bottle because of ill health or prematurity. These infants require nutritional support until they can start oral feeding. Breastfeeding is advocated for these infants, and mothers are frequently encouraged to express breast milk to be fed via the enteral tube. However, by discharge, breastfeeding rates tend to be low. Oral feeding requires careful management, and although practices may vary because of clinical need, some may be informed by unit norms. There is limited evidence for effective breastfeeding support in this environment and little exploration of the effect of routine feeding decisions. This study aimed to explore feeding decisions and considered how these might affect outcomes. The staff in the two large urban NNUs who participated in the feeding decisions were interviewed and the data were analysed using a theoretical framework. Feeding decisions were made mainly by the unit staff, with limited parental involvement. Subsequent management varied, with differences being related to staff experience and beliefs, unit norms, parent's expectations and physical constraints within the unit. The staff were overtly supportive of breastfeeding, but the need to monitor and quantify milk intake may undermine breastfeeding. Furthermore, feeding breastfed infants during the mothers' absence was controversial and provoked debate. There is a need for clear guidelines and increased parental involvement in feeding decisions. Routine practices within the system may discourage mothers from initiating and persisting with breastfeeding. A change in unit culture is required to fully support the parent's feeding choices.

Effects of prefeeding oral stimulation on feeding performance of preterm infants

OBJECTIVE

To investigate the effects of a prefeeding oral stimulation program on the feeding performance of preterm infants.

METHODS

A crossover design was used. Nineteen preterm infants who were in the transitional time to full oral feeding served as their own controls. A 5-min oral stimulation program was applied to infants prior to feeding in two of 4 feedings on two consecutive days. Feeding, behavioral state, and physiological parameters of infants in the intervention and control feeding conditions were compared using SPSS software.

RESULTS

There were two significant findings: (1) Compared to the control condition, infants in the intervention condition achieved a greater intake rate in the initial 5 min of the feeding (P = 0.021). (2) After receiving oral stimulation, a higher percentage of infants moved to the drowsy or quiet alert state from sleep or restlessness before feeding, both on Day 1 (P= 0.016) as well as Day 2 (P = 0.016). No significant differences were found in other feeding parameters, feeding-induced physiological changes (peripheral oxygen saturation levels and pulse rate) and behavioral states between two feeding conditions.

CONCLUSIONS

Oral stimulation had a modulating effect on the prefeeding behavioral states and short-lived beneficial effects on the feeding efficiency of preterm infants.

The effect of feeding experience on clinical outcomes in preterm infants

OBJECTIVE

The purpose of this analysis was to investigate the effect of oral feeding experience on clinical outcomes (time to full oral feedings and length of stay) in preterm infants.

STUDY DESIGN

This analysis was completed on 92 infants who participated in a longitudinal, non-experimental study. Data were collected daily for maturity, weight and experience at oral feeding. Additional data were collected to assess overall morbidity.

RESULT

Time to full oral feedings was predicted by experience at oral feeding and morbidity. Length of stay from the start of oral feedings until discharge was predicted by feeding experience and by maturity at the first oral feeding. Weight gain was not affected by feeding experience.

CONCLUSION

Experience at feeding may result in more rapid transition to full oral feedings regardless of severity of illness and may contribute to shorter length of stay. These positive clinical outcomes related to feeding experience warrant further research attention.

Guidelines for bottle feeding your premature baby

Prolonged use of gavage feedings is common in premature infants who have not yet acquired suck, swallow, and breathing coordination. Preterm infants must be developmentally mature to orally feed successfully. Als' Synactive Theory of Development offers a conceptual framework to facilitate understanding of how premature infants dynamically differentiate to attain developmental milestones such as oral feeding. Key clinical implications for neonatal nurses are contingent upon incorporating evidence-based research into practice and providing consistent quality care to improve feeding outcomes.

Multiple factors related to bottle-feeding performance in preterm infants

BACKGROUND

A great deal of attention has focused on understanding preterm infant feeding behaviors and on strategies to support the preterm infant during this period; however, comprehensive descriptions of the feeding behavior of preterm infants that incorporate an examination of multiple subsystem levels are lacking.

OBJECTIVE

To examine various physical indicators related to preterm infants' bottle-feeding performance.

METHODS

This was a retrospective, descriptive, exploratory study using a convenience sample. Medical records of 116 preterm infants were reviewed from the initiation of bottle-feeding until discharge from the neonatal intensive care unit. This study examined bottle-feeding performance (volume intake in milliliters per minute) as well as postmenstrual age, weight at each observed feed, oral motor skills, signs of distress, feeding techniques, feeding experience, gender, and Apgar scores at 5 minutes. Oral motor skills were measured by the Neonatal Oral Motor Assessment Scale.

RESULTS

Linear mixed-effects models were used to examine the relationship between bottle-feeding performance and the remaining variables. Postmenstrual age, weight at each observed feed, oral motor skills, feeding experience, and feeding techniques were found to be significant predictors of feeding performance at the .05 level.

CONCLUSIONS

Multiple factors, both intrinsic and extrinsic, play a role in determining an infant's bottle-feeding performance. In addition to age and weight, the presently employed conventional criteria, oral motor skills, feeding practice, and feeding techniques also contribute to infants' feeding performance. Arbitrary age (34 weeks gestational age) and weight criteria (1,500 g) should not be the only indicators for oral feeding.

A descriptive study of mothers' experiences feeding their preterm infants after discharge

PURPOSE

The purpose of this study was to explore mothers' perceptions of their experiences in feeding their preterm infants in the early weeks after hospital discharge.

SUBJECTS

Twenty-seven mothers whose preterm infants were part of a larger study of feeding readiness participated.

DESIGN

A qualitative, descriptive approach was used to explore mothers' experiences in feeding their preterm infants after hospital discharge.

METHODS

A convenience sample of mothers of preterm infants were interviewed 2 to 3 weeks after hospital discharge. Data were generated by semi-structured interview and analyzed by searching for thematic patterns in the data. Mothers were asked to describe their experiences feeding their infants, their perceptions of how their infants' feeding ability had changed since discharge, and the meanings they gave to these changes. The interviews were audiotaped and transcribed. Agreement of themes between the investigators was achieved.

MAIN OUTCOME MEASURES

Three themes emerged from the interviews: interpreting infant behaviors, managing the feeding process, and realizing knowledge gaps.

PRINCIPAL RESULTS

Mothers struggle with infant feeding in the first few weeks after discharge and experience a period of transition before comfort develops.

CONCLUSIONS

Nursing interventions should include anticipatory guidance to mothers about feeding their infants after discharge and more concrete information regarding infant cues of hunger and satiation. Follow-up visits after discharge should include a review of the current feeding regimen, information regarding feeding progression, and reinforcement about changing infant behaviors as the preterm infant approaches 40 weeks postmenstrual age.