National and regional trends in gastrostomy in very low birth weight infants in the USA: 2000-2012

Clinical Outcomes of Neonatal Intensive Care Unit Graduates with Bridled Nasogastric Feeding Tubes

OBJECTIVE

The aim of this study was to describe clinical outcomes of bridled nasogastric tube (NGT) program implementation for infants requiring assisted home feeding (AHF) to discharge from the neonatal intensive care unit (NICU).

STUDY DESIGN

This was a descriptive prospective analysis of a pilot cohort of infants after implementation of a bridled NGT AHF program to facilitate discharge from level III and IV NICUs from March 2019 to October 2020.

RESULTS

Of 29 attempts in infants, 22 infants were discharged with bridled NGTs over 18 months. Bridle placement was unsuccessful in three patients, and four bridles were removed before discharge. Bridle use ranged from 7 to 125 days, with a median duration of 37 days. Dislodgement rate was 0.69 per 100 days. Seventeen infants (77%) achieved full oral feeds, while five (23%) discharged with bridled NGTs later converted to gastrostomy tubes.

CONCLUSION

Implementation of a bridled NGT program is feasible for level III and IV NICUs to facilitate discharging infants who require feeding support to transition home.

KEY POINTS

· Bridled NGT use after NICU is typically 1 month.. · Infants have low bridle NGT dislodgement.. · Most bridled NGT NICU grads attain full oral feeds..

National Trends in Survival and Short-Term Outcomes of Periviable Births ≤24 Weeks Gestation in the United States, 2009 to 2018

OBJECTIVE

Data from the academic medical centers in the United States showing improvements in survival of periviable infants born at 22 to 24 weeks GA may not be nationally representative since a substantial proportion of preterm infants are cared for in community hospital-based neonatal intensive care units. Our objective was to examine the national trends in survival and other short-term outcomes among preterm infants born at ≤24 weeks gestational age (GA) in the United States from 2009 to 2018.

STUDY DESIGN

This was a retrospective, repeated cross-sectional analysis of the National Inpatient Sample for preterm infants ≤24 weeks GA. The primary outcome was the trends in survival to discharge. Secondary outcomes were the trends in the composite outcome of death or one or more major morbidity (bronchopulmonary dysplasia, necrotizing enterocolitis stage ≥2, periventricular leukomalacia, severe intraventricular hemorrhage, and severe retinopathy of prematurity). The Cochran-Armitage trend test was used for trend analysis. p-Value <0.05 was considered significant.

RESULTS

Among 71,854 infants born at ≤24 weeks GA, 34,251 (47.6%) survived less than 1 day and were excluded. Almost 93% of those who survived <1 day were of ≤23 weeks GA. Among the 37,603 infants included in the study cohort, 48.1% were born at 24 weeks GA. Survival to discharge at GA ≤ 23 weeks increased from 29.6% in 2009 to 41.7% in 2018 (p < 0.001), while survival to discharge at GA 24 weeks increased from 58.3 to 65.9% (p < 0.001). There was a significant decline in the secondary outcomes among all the periviable infants who survived ≥1 day of life.

CONCLUSION

Survival to discharge among preterm infants ≤24 weeks GA significantly increased, while death or major morbidities significantly decreased from 2009 to 2018. The postdischarge survival, health care resource use, and long neurodevelopmental outcomes of these infants need further investigation.

KEY POINTS

· Survival increased significantly in infants ≤24 weeks GA in the United States from 2009 to 2018.. · Death or major morbidity in infants ≤24 weeks GA decreased significantly from 2009 to 2018.. · Death or surgical procedures including tracheostomy, VP shunt placement, and PDA surgical closure in infants <=24 weeks GA decreased significantly from 2009 to 2018..

Higher Dose Noninvasive Transcutaneous Auricular Vagus Nerve Stimulation Increases Feeding Volumes and White Matter Microstructural Complexity in Open-Label Study of Infants Slated for Gastrostomy Tube

OBJECTIVE

To determine whether transcutaneous auricular vagus nerve stimulation (taVNS) paired with twice daily bottle feeding increases the volume of oral feeds and white matter neuroplasticity in term-age-equivalent infants failing oral feeds and determined to need a gastrostomy tube.

STUDY DESIGN

In this prospective, open-label study, 21 infants received taVNS paired with 2 bottle feeds for 2 - 3 weeks (2x). We compared 1) increase oral feeding volumes with 2x taVNS and previously reported once daily taVNS (1x) to determine a dose response, 2) number of infants who attained full oral feeding volumes, and 3) diffusional kurtosis imaging and magnetic resonance spectroscopy before and after treatment by paired t tests.

RESULTS

All 2x taVNS treated infants significantly increased their feeding volumes compared with 10 days before treatment. Over 50% of 2x taVNS infants achieved full oral feeds but in a shorter time than 1x cohort (median 7 days [2x], 12.5 days [1x], P < .05). Infants attaining full oral feeds showed greater increase in radial kurtosis in the right corticospinal tract at the cerebellar peduncle and external capsule. Notably, 75% of infants of diabetic mothers failed full oral feeds, and their glutathione concentrations in the basal ganglia, a measure of central nervous system oxidative stress, were significantly associated with feeding outcome.

CONCLUSIONS

In infants with feeding difficulty, increasing the number of daily taVNS-paired feeding sessions to twice-daily significantly accelerates response time but not the overall response rate of treatment. taVNS was associated with white matter motor tract plasticity in infants able to attain full oral feeds.

TRIAL REGISTRATION

Clinicaltrials.gov (NCT04643808).

Comparison of Effect of Feeding Premature Infants with Either Cup, Bottle, and Syringe on Transition to Breastfeeding, Breastfeeding Success, Weight Gain, and Duration of Hospitalization

Objective: This study was completed with the aim of determining the effect of cup feeding (CF), bottle feeding (BF), and syringe feeding (SF) methods on the transition to breastfeeding, breastfeeding success, physiological parameters, weight gain, and discharge duration for preterm neonates in the neonatal intensive care unit (NICU). Materials and Methods: The study was designed to be randomized, controlled, and single blinded. The study was completed with 102 premature neonates between 29-34 gestational weeks abiding by the case selection criteria receiving treatment and care in the NICU. The 1st group comprised premature neonates receiving CF, the second group received BF, and the third group received SF. For collection of data, the Premature Infant Descriptive Information and Monitoring Form, Bristol Breastfeeding Assessment Tool (BBAT), and Infant-Focused Feeding Scales (IFFS) were used. Results: Comparison of mean peak heart rate in the groups found that the BF group was significantly high (p = 0.047) and comparison of mean SO2 found that the SF group was significantly high (p = 0.000). Infants in the SF group were determined to have significantly higher BBAT scores compared to the infants in the BF and CF groups (p = 0.015). In addition, SF infants were determined to transition to full enteral feeding and breastfeeding in a shorter duration (p < 0.05). There were no significant differences between the groups for weight gain and discharge duration (p > 0.05). Conclusions: The SF method was determined to more positively affect breastfeeding success, transition to full breastfeeding duration, and vital signs compared to the CF and BF methods. In line with the results obtained in the study, the use of the SF method may be recommended to increase breastfeeding success of neonates, to shorten the transition to full breastfeeding and for stable physical parameters.

A review and guide to nutritional care of the infant with established bronchopulmonary dysplasia

Bronchopulmonary dysplasia (BPD) remains the most common long-term morbidity of premature birth, and the incidence of BPD is not declining despite medical advancements. Infants with BPD are at high risk for postnatal growth failure and are often treated with therapies that suppress growth. Additionally, these infants may display excess weight gain relative to linear growth. Optimal growth and nutrition are needed to promote lung growth and repair, improve long-term pulmonary function, and improve neurodevelopmental outcomes. Linear growth in particular has been associated with favorable outcomes yet can be difficult to achieve in these patients. While there has been a significant clinical and research focus regarding BPD prevention and early preterm nutrition, there is a lack of literature regarding nutritional care of the infant with established BPD. There is even less information regarding how nutritional needs change as BPD evolves from an acute to chronic disease. This article reviews the current literature regarding nutritional challenges, enteral nutrition management, and monitoring for patients with established BPD. Additionally, this article provides a practical framework for interdisciplinary nutritional care based on our clinical experience at the Comprehensive Center for Bronchopulmonary Dysplasia.

Predictive ability of postnatal growth failure for adverse feeding-related outcomes in preterm infants: an exploratory study comparing Fenton with INTERGROWTH-21st preterm growth charts

BACKGROUND

Postnatal growth failure (PGF) can impact the short- and long-term health outcomes in preterm infants. However, PGF rates vary according to the way it is defined and the growth chart used to monitor the postnatal growth. Fenton-2013 growth charts which suggest following intrauterine fetal growth compared to INTERGROWTH-21st, one specifically constructed for monitoring preterm extrauterine growth.

OBJECTIVE

Exploratory study to determine the PGF definition at first per oral (PO) that is most predictive of adverse oral feeding-related outcomes in preterm infants.

METHODS

Prospectively collected data of preterm infants 24-32 weeks gestation, who were started on cue-based oral feeds at ≤34 weeks gestation were reviewed. Anthropometric data at first PO (weight, length, and head circumference) were compared according to Fenton and INTERGROWTH-21st growth charts. PGF was defined either as <10th percentile, Z-score change (ZSC) of ≥-1.5 from birth, or ZSC of ≥-2.0. Top-quartile (Q4) of feeding-related outcomes (days from first PO to full PO, post-menstrual age at full PO, days from first PO to discharge, and length of hospital stay) was considered as adverse outcome.

RESULTS

Of the 125 infants included, the median birth gestation and weight were 29.4 weeks and 1235 g, respectively. Incidence of appropriate, small, and large for gestational age was similar at birth by both growth charts. ZSC -1.5 for weight by Fenton was significantly higher at first PO vs. INTERGROWTH-21st (p=.02), while percentile <10th and ZSC -2.0 rates were similar. The PGF definition based on individual anthropometrics at first PO that has the best area under the curve (AUC) for adverse feeding-related outcomes was used to create a combined PGF definition for each growth chart. The AUC for the combined PGF for the Fenton and INTERGROWTH-21st was similar (p>.05) and both have moderate sensitivity and negative predictive value, but have low specificity, positive predictive value, and positive likelihood ratio for adverse feeding-related outcomes.

CONCLUSIONS

The tested definitions of PGF at first PO have only small to moderate predictive ability for adverse feeding-related outcomes in preterm infants.

Effect of cup, syringe, and finger feeding on time of oral feeding of preterm neonate's: a randomized controlled clinical trial

BACKGROUND

The oral nutrition is big challenge for preterm neonates. Since the best oral feeding method for preterm neonates is not yet known, the present study aimed to evaluate the effect of cup, syringe, and finger feeding methods on reaching the time of full oral feeding and weight gain among preterm neonates.

METHOD

This randomized clinical trial study was conducted on 99 preterm neonate's, born at 30-34 weeks gestation, admitted to the neonatal intensive care unit (NICU) of Al-Zahra and Taleghani Therapeutic-Educational Centers in Tabriz, Iran. Subjects were assigned into finger feeding (n = 33), cup feeding (n = 33), and syringe feeding (n = 33) groups in the allocation ratio of 1:1:1 using block randomization with a block size 6 and 9. They were studied in terms of reaching the time of full oral feeding and weight gain. The data were analyzed using SPSS/version21 software, and ANOVA, chi-square, and ANCOVA tests.

RESULTS

There was no significant difference in the mean score of reaching the time of full oral feeding among cup, finger, and syringe feeding groups (p = 0.652). The mean score of daily weight gain, oxygen saturation (SaO₂), and heart rate after feeding was not significantly different among the three groups (p > 0.05). The effect of confounding variables, including birth weight and age, arterial oxygen saturation, and heart rate before feeding, was controlled.

CONCLUSION

Based on the results, one of the cup, finger, and syringe feeding methods can be applied in the NICU, considering the staff's proficiency in feeding neonates. Trial registration IRCT20150424021917N11.

Failure to thrive, oral intake, and inpatient status prior to gastrostomy tube placement in the first year of life is associated with persistent use 1-year later

BACKGROUND

Gastrostomy tube (GT) placement is a common procedure in infants (≤1-year-old). There is variation in patient selection and a paucity of studies examining which patients require long term enteral access. The objective of this study was to assess demographic and clinical factors associated with persistent GT use (PGU) at 1-year after placement.

METHODS

We performed a single-institution retrospective review of patients ≤1-year-old who underwent GT placement from January 31, 2014, and January 31, 2020, using institutional NSQIP-P data supplemented with chart review. Multivariable logistic regression analysis was performed to identify factors associated with PGU. Clinical predictors were selected a priori, and a p-value less than 0.05 was used to detect a significant association.

RESULTS

140 patients were included, and 118 had a 1-year follow-up. At 1-year following GT placement, 38 patients had weaned from their GT (32.2%). Failure to thrive (FTT), and inpatient admission prior to surgery are associated with increased odds of PGU at 1-year after surgery, OR: 5.19 and 6.02, respectively. There is an inverse association between the percentage of feeds taken by mouth at the time of surgery and the odds of PGU at 1-year (OR: 0.03).

CONCLUSION

Patients who have FTT (documented prior to surgery) or an inpatient admission prior to GT had a higher odds of PGU at 1-year post-op. Additionally, the amount taken by mouth at the time of GT placement was inversely related to PGU. These factors are important in determining the need for a surgical gastrostomy tube.

LEVEL OF EVIDENCE

II.

A pilot study to determine the incidence, type, and severity of non-routine events in neonates undergoing gastrostomy tube placement

BACKGROUND

Non-routine events (NRE) are defined as any suboptimal occurrences in a process being measured in the opinion of the reporter and comes from the field of human factors engineering. These typically occur well up-stream of an adverse event and NRE measurement has not been applied to the complex context of neonatal surgery. We sought to apply this novel safety event measurement methodology to neonates in the NICU undergoing gastrostomy tube placement.

METHODS

A prospective pilot study was conducted between November 2016 and August 2020 in the Level IV NICU and the pediatric operating rooms of an urban academic children's hospital to determine the incidence, severity, impact, and contributory factors of clinician-reported non-routine events (NREs, i.e., deviations from optimal care) and 30-day NSQIP occurrences in neonates receiving a G-tube.

RESULTS

Clinicians reported at least one NRE in 32 of 36 (89%) G-tube cases, averaging 3.0 (Standard deviation: 2.5) NRE reports per case. NSQIP-P review identified 7 cases (19%) with NSQIP-P occurrences and each of these cases had multiple reported NREs. One case in which NREs were not reported was without NSQIP-P occurrences. The odds ratio of having a NSQIP-P occurrence with the presence of an NRE was 0.695 (95% CI 0.06-17.04).

CONCLUSION

Despite being considered a "simple" operation, >80% of neonatal G-tube placement operations had at least one reported NRE by an operative team member. In this pilot study, NRE occurrence was not significantly associated with the subsequent reporting of an NSQIP-P occurrence. Understanding contributory factors of NREs that occur in neonatal surgery may promote surgical safety efforts and should be evaluated in larger and more diverse populations.

LEVEL OF EVIDENCE

IV.

Racial and Ethnic Disparities in Medical Complexity and In-Hospital Death Among US-Born VLBW Infants

BACKGROUND AND OBJECTIVE

To assess the racial and ethnic disparity in the prevalence of complex chronic conditions (CCC) and/or in-hospital death among US-born very low birth weight (VLBW, <1500 g) infants.

METHODS

This retrospective, cross-sectional analysis of discharge data from the Kids' Inpatient Database, included VLBW infants born in US hospitals in 2009 and 2012 (n = 554825, weighted n = 573693) exlcuding those with missing demographics. The main outcome was CCC or death. Multiple logistic regression modeling estimated the association of various characteristics with CCC or death, considering race and ethnicity.

RESULTS

There was heterogeneity in the association of insurance status and hospital region and experiencing CCC or death when compared across races and ethnicities. Infants of all races and ethnicities had higher odds of CCC or death if they had an operative procedure, were outborn, or had a birth weight of <500 g or 500 g to 999 g compared with 1000 g to 1499 g. Non-Hispanic Black infants <500 g, however, had the highest odds of CCC or death compared with those 1000 g to 1499 g (adjusted odds ratio 67.2, 95% confidence interval, 48.6-93.0), 2.3 times higher than the odds for non-Hispanic White infants (AOR 2.32, 95% confidence interval, 1.57-3.42).

CONCLUSIONS

Insurance and region were associated with increased prevalence of CCC or death in certain racial and ethnic groups. Additionally, non-Hispanic Black infants <500 g had >2.3 times the odds of CCC or death compared with non-Hispanic White infants, relative to infants 1000 g to 1499 g. Additional investigation is needed to understand the drivers of these disparities.

Gastrostomy Tube Placement and Resource Use in Neonatal Hospitalizations With Down Syndrome

OBJECTIVES

To determine the trends in gastrostomy tube (GT) placement and resource utilization in neonates ≥35 weeks' gestational age with Down syndrome (DS) in the United States from 2006 to 2017.

METHODS

This was a serial cross-sectional analysis of neonatal hospitalizations of ≥35 weeks' gestational age with International Classification of Diseases diagnostic codes for DS within the National Inpatient Sample. International Classification of Diseases procedure codes were used to identify those who had GT. The outcomes of interest were the trends in GT and resource utilization and the predictors of GT placement. Cochran-Armitage and Jonckheere-Terpstra trend tests were used for trend analysis of categorical and continuous variables, respectively. Predictors of GT placement were identified using multivariable logistic regression. P value <.05 was considered significant.

RESULTS

Overall, 1913 out of 51 473 (3.7%) hospitalizations with DS received GT placement. GT placement increased from 1.7% in 2006 to 5.6% in 2017 (P <.001), whereas the prevalence of DS increased from 10.3 to 12.9 per 10 000 live births (P <.001). Median length of stay significantly increased from 35 to 46 days, whereas median hospital costs increased from $74 214 to $111 360. Multiple comorbidities such as prematurity, sepsis, and severe congenital heart disease were associated with increased odds of GT placement.

CONCLUSIONS

There was a significant increase in GT in neonatal hospitalizations with DS, accompanied by a significant increase in resource utilization. Multiple comorbidities were associated with GT placement and the early identification of those who need GT could potentially decrease length of stay and resource use.

Safety of Bottle-Feeding Under Nasal Respiratory Support in Preterm Lambs With and Without Tachypnoea

Aim: Convalescing preterm infants often require non-invasive respiratory support, such as nasal continuous positive airway pressure or high-flow nasal cannulas. One challenging milestone for preterm infants is achieving full oral feeding. Some teams fear nasal respiratory support might disrupt sucking–swallowing–breathing coordination and induce severe cardiorespiratory events. The main objective of this study was to assess the safety of oral feeding of preterm lambs on nasal respiratory support, with or without tachypnoea.

Methods: Sucking, swallowing and breathing functions, as well as electrocardiogram, oxygen haemoglobin saturation, arterial blood gases and videofluoroscopic swallowing study were recorded in 15 preterm lambs during bottle-feeding. Four randomly ordered conditions were studied: control, nasal continuous positive airway pressure (6 cmH₂O), high-flow nasal cannulas (7 L•min^–1), and high-flow nasal cannulas at 7 L•min^–1 at a tracheal pressure of 6 cmH₂O. The recordings were repeated on days 7–8 and 13–14 to assess the effect of maturation.

Results: None of the respiratory support impaired the safety or efficiency of oral feeding, even with tachypnoea. No respiratory support systematically impacted sucking–swallowing–breathing coordination, with or without tachypnoea. No effect of maturation was found.

Conclusion: This translational physiology study, uniquely conducted in a relevant animal model of preterm infant with respiratory impairment, shows that nasal respiratory support does not impact the safety or efficiency of bottle-feeding or sucking–swallowing–breathing coordination. These results suggest that clinical studies on bottle-feeding in preterm infants under nasal continuous positive airway pressure and/or high-flow nasal cannulas can be safely undertaken.

Partial Enteral Discharge Programs for High-risk Infants

Premature infants or infants born with complex medical problems are at increased risk of having delayed or dysfunctional oral feeding ability. These patients typically require assisted enteral nutrition in the form of a nasogastric tube (NGT) during their NICU hospitalization. Historically, once these infants overcame their initial reason(s) for admission, they were discharged from the NICU only after achieving full oral feedings or placement of a gastrostomy tube. Recent programs show that these infants can be successfully discharged from the hospital with partial NGT or gastrostomy tube feedings with the assistance of targeted predischarge education and outpatient support. Caregiver opinions have also been reported as satisfactory or higher with this approach. In this review, we discuss the current literature and outcomes in infants who are discharged with an NGT and provide evidence for safe practices, both during the NICU hospitalization, as well as in the outpatient setting.

Pediatric Chronic Critical Illness: Validation, Prevalence, and Impact in a Children's Hospital

OBJECTIVES

Large populations of chronically critically ill patients test the critical care system's resource utilization ability. Defining and tracking this group is necessary for census predictions.

DESIGN

Retrospective cohort analysis.

SETTINGS

Tertiary academic center in United States.

PATIENTS

Patients admitted to PICU or neonatal ICU.

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

Demographics and resource utilization variables were sampled in PICU, intermediate care unit, cardiovascular ICU, and neonatal ICU on 3 random days in 3 consecutive months. The attendings' perception of pediatric chronic critical illness was contrasted to Shapiro's definition of chronic critical care criteria. Each unit's active and maximal capacity census was computed: the occurrence rate of pediatric chronic critical illness was 34%, the prevalence was 44.5%, and the tolerance, or percentage pediatric chronic critical illness patients to all available beds, was 36.8%. The median length of stay for the nonpatients with pediatric critical care illness to patients with pediatric critical care illness was 9 versus 46 days (1/5.1). The attending's decision was 58 times more concordant with the criteria. Pediatric chronic critical illness bed occupancy was 40.6% in PICU, 97.2% in intermediate care unit, 47.8% in cardiovascular ICU, and 33.9% in neonatal ICU.

CONCLUSIONS

Pediatric chronic critical illness patients occupied more than one third of the ICU beds and have five times longer stay. This mounting load needs to be uniformly defined, addressed at regional and national levels, and considered in the current pandemic planning.

Actual and Potential Impact of a Home Nasogastric Tube Feeding Program for Infants Whose Neonatal Intensive Care Unit Discharge Is Affected by Delayed Oral Feedings

OBJECTIVE

To compare healthcare use and parent health-related quality of life (HRQL) in 3 groups of infants whose neonatal intensive care unit (NICU) discharge was delayed by oral feedings.

STUDY DESIGN

This was a prospective, single-center cohort of infants in the NICU from September 2018 to March 2020. After enrollment, weekly chart review determined eligibility for home nasogastric (NG) feeds based on predetermined criteria. Actual discharge feeding decisions were at clinical discretion. At 3 months' postdischarge, we compared acute healthcare use and parental HRQL, measured by the PedsQL Family Impact Module, among infants who were NG eligible but discharged with all oral feeds, discharged with NG feeds, and discharged with gastrostomy (G) tubes. We calculated NICU days saved by home NG discharges.

RESULTS

Among 180 infants, 80 were orally fed, 35 used NG, and 65 used G tubes. Compared with infants who had NG-tube feedings, infants who had G-tube feedings had more gastrointestinal or tube-related readmissions and emergency encounters (unadjusted OR 3.97, 95% CI 1.3-12.7, P = .02), and orally-fed infants showed no difference in use (unadjusted OR 0.41, 95% CI 0.1-1.7, P = .225). Multivariable adjustment did not change these comparisons. Parent HRQL at 3 months did not differ between groups. Infants discharged home with NG tubes saved 1574 NICU days.

CONCLUSIONS

NICU discharge with NG feeds is associated with reduced NICU stay without increased postdischarge healthcare use or decreased parent HRQL, whereas G-tube feeding was associated with increased postdischarge healthcare use.

Body adiposity and oral feeding outcomes in infants: a pilot study

BACKGROUND

Prevalence of oral feeding difficulties in high-risk infants is increasing. Desire to take orally can be influenced by hunger and satiety, which may influence growth and body fat.

OBJECTIVE

To determine the association between body adiposity and infant oral feeding.

METHODS

Retrospective case-control study of infants ≥37-week postmenstrual age (PMA). Infants on tube feeding (cases) compared to birth gestation-matched infants on full oral feeding (controls). Body composition was determined by air displacement plethysmography.

RESULTS

Overall, 16 cases vs. 16 controls. At study, cases vs. controls had similar PMA, weight and length z-scores, and calorie intake. The mean oral intake was significantly less in cases vs. controls (66 vs. 168 ml/kg/day, p < 0.001). Cases had significantly higher percentage of fat mass (18.7 vs. 10.9) and fat-mass z-score (1.62 vs. 0.08) (p < 0.05), but similar fat-free mass vs. controls. Five case infants required gastrostomy.

CONCLUSIONS

Higher body adiposity may worsen the infant oral feeding outcomes.

Prevalence and Predictors of Medical Complexity in a National Sample of VLBW Infants

BACKGROUND AND OBJECTIVES

Very low birth weight (VLBW) infants are at high risk for morbidities beyond the neonatal period and ongoing use of health care. Specific morbidities have been studied; however, a comprehensive landscape of medical complexity in VLBW infants has not been fully described. We sought to (1) describe the prevalence of complex chronic conditions (CCCs) and (2) determine the association of demographic, hospital, and clinical factors with CCCs and CCCs or death.

METHODS

This retrospective cross-sectional analysis of discharge data from the Kids' Inpatient Database (2009-2012) included infants with a birth weight <1500 g and complete demographics. Outcomes included having CCCs or having either CCCs or dying. Analyses were weighted; univariate and multiple logistic regression models were used to estimate unadjusted and adjusted odds ratios. A dominance analysis with Cox-Snell R ² determined the relative contribution of demographic, hospital, and clinical factors to the outcomes.

RESULTS

Among our weighted cohort of >78 000 VLBW infants, >50% had CCCs or died. After adjustments, the prevalence of CCCs or CCCs or death differed by sex, race and ethnicity, hospital location, US region, receipt of surgery, transfer status, and birth weight. Clinical factors accounted for the highest proportion of the model's ability to predict CCCs and CCCs or death at 93.3% and 96.3%, respectively, whereas demographic factors were 11.5% and 2.3% and hospital factors were 5.2% and 1.4%, respectively.

CONCLUSIONS

In this nationally representative analysis, medical complexity is high among VLBW infants. Varying contributions of demographic, hospital, and clinical factors in predicting medical complexity offer opportunities to investigate future interventions to improve care delivery and patient outcomes.

NICU infants who require a feeding gastrostomy for discharge

OBJECTIVE

To determine population data for infants receiving a gastrostomy tube (GT) in our Neonatal Intensive Care Unit (NICU) to better understand the premature infant population at risk for GT prior to discharge.

STUDY DESIGN

We identified all NICU infants born 2015-2016 who received a GT and determined the birth gestational age below which GTs were placed due to oral feeding failure secondary to prematurity-related comorbidities, rather than anomalies or other reasons. Aggregate data were used to compare infants born <30 weeks (w) gestation who received a GT with those who did not.

RESULTS

GTs were placed in 117 infants. More than half of the NICU patients who receive GTs were actually >32 weeks gestation; a cut-off of <30w was a good identifier for those who failed achieving full oral feeds due to prematurity-related problems. Infants born <30w (n = 282) not receiving GTs were discharged at a significantly lower postmenstrual age (36w) and lower weight (2.3 kg) compared with infants who received a GT (49w, 5 kg).

CONCLUSIONS

The population of premature infants born <30w gestation constitute the population of infants at risk for a GT based solely on prematurity.

LEVELS OF EVIDENCE

III.

Impact of Feeding Strategies With Acid Suppression on Esophageal Reflexes in Human Neonates With Gastroesophageal Reflux Disease: A Single-Blinded Randomized Clinical Trial

INTRODUCTION

Aims were to test hypothesis that esophageal provocation-induced reflexes are superior with acid suppression plus feeding modifications vs acid suppression alone among infants treated for gastroesophageal reflux disease (GERD).

METHODS

Infants (N = 49, 41.3 ± 2.6 of postmenstrual age) with acid reflux index >3% underwent longitudinal motility testing (weeks 0 and 5) with graded midesophageal provocation to test randomly allocated therapies (4 weeks' proton pump inhibitor [PPI] ± feeding modifications) on sensory-motor aerodigestive reflexes. Feeding modification included restricted fluid volume <140 mL/kg per day, fed over 30 minutes in right lateral position and supine postprandial position. Primary motility outcome was frequency-occurrence of peristaltic reflex. Secondary outcomes included upper esophageal sphincter contractile reflex, lower esophageal sphincter (LES) relaxation reflex, respiratory change, and symptom characteristics.

RESULTS

Treatment groups did not differ for primary outcome (odds ratio = 0.8, 95% confidence interval 0.4-1.6, P = 0.99) or secondary outcomes (all P > 0.05). For both treatment groups at follow-up, distal esophageal contraction and LES tone decreased, and LES relaxation reflex occurrence is less frequent (all P < 0.05). In a subgroup analysis, comparing infants with PPI washout (N = 40) vs with continued (N = 9) PPI therapy, no differences were noted for aerodigestive reflex response frequency-occurrence (all P > 0.05).

DISCUSSION

In infants with GERD, feeding modification with acid suppression is not superior to acid suppression alone in modifying aerodigestive reflexes (frequency, sensation, or magnitude). Contiguous areas targeted by GER, i.e., LES and distal esophageal functions, worsened at follow-up for both groups despite PPI therapy. Maturation is likely the key factor for GERD resolution in infants, justifying the use of placebo in clinical trials for objectively determined GERD.

Survival of children and adolescents with intellectual disability following gastrostomy insertion

BACKGROUND

Positive health outcomes have been observed following gastrostomy insertion in children with intellectual disability, which is being increasingly used at younger ages to improve nutritional intake. This study investigated the effect of gastrostomy insertion on survival of children with severe intellectual disability.

METHODS

We used linked disability and health data of children and adolescents who were born in Western Australia between 1983 and 2009 to compare survival of individuals with severe intellectual disability by exposure to gastrostomy status. For those born in 2000-2009, we employed propensity score matching to adjust for confounding by indication. Effect of gastrostomy insertion on survival was compared by pertinent health and sociodemographic risk factors.

RESULTS

Compared with children born in the 1980s-1990s, probability of survival following first gastrostomy insertion for those born in 2000-2009 was higher (2 years: 94% vs. 83%). Mortality risk was higher in cases than that in their matched controls (hazard ratio 2.9, 95% confidence interval 1.1, 7.3). The relative risk of mortality (gastrostomy vs. non-gastrostomy) may have differed by sex, birthweight and time at first gastrostomy insertion. Respiratory conditions were a common immediate or underlying cause of death among all children, particularly among those undergoing gastrostomy insertion.

CONCLUSIONS

Whilst gastrostomy insertion was associated with lower survival rates than children without gastrostomy, survival improved with time, and gastrostomy afforded some protection for the more vulnerable groups, and earlier use appears beneficial to survival. Specific clinical data that may be used to prioritise the need for gastrostomy insertion may be responsible for the survival differences observed.

Feeding and Swallowing Difficulties in Neonates: Developmental Physiology and Pathophysiology

Development of enteral and oral feeding milestones in infants is intricately linked to physiologic maturation of the gastrointestinal tract and its complex interplay with cardiorespiratory and central nervous system control and coordination. Assessment of an infant's developmental skills and maturation can guide us with targeted management approaches and prediction of feeding outcomes. In this article, we review and summarize the developmental aspects of oral feeding and swallowing physiology, and current understanding of the pathophysiological changes associated with feeding difficulties in infants.

Transcutaneous Auricular Vagus Nerve Stimulation-Paired Rehabilitation for Oromotor Feeding Problems in Newborns: An Open-Label Pilot Study

Neonates born premature or who suffer brain injury at birth often have oral feeding dysfunction and do not meet oral intake requirements needed for discharge. Low oral intake volumes result in extended stays in the hospital (>2 months) and can lead to surgical implant and explant of a gastrostomy tube (G-tube). Prior work suggests pairing vagus nerve stimulation (VNS) with motor activity accelerates functional improvements after stroke, and transcutaneous auricular VNS (taVNS) has emerged as promising noninvasive form of VNS. Pairing taVNS with bottle-feeding rehabilitation may improve oromotor coordination and lead to improved oral intake volumes, ultimately avoiding the need for G-tube placement. We investigated whether taVNS paired with oromotor rehabilitation is tolerable and safe and facilitates motor learning in infants who have failed oral feeding. We enrolled 14 infants [11 premature and 3 hypoxic-ischemic encephalopathy (HIE)] who were slated for G-tube placement in a prospective, open-label study of taVNS-paired rehabilitation to increase feeding volumes. Once-daily taVNS was delivered to the left tragus during bottle feeding for 2 weeks, with optional extension. The primary outcome was attainment of oral feeding volumes and weight gain adequate for discharge without G-tube while also monitoring discomfort and heart rate (HR) as safety outcomes. We observed no adverse events related to stimulation, and stimulation-induced HR reductions were transient and safe and likely confirmed vagal engagement. Eight of 14 participants (57%) achieved adequate feeding volumes for discharge without G-tube (mean treatment length: 16 ± 6 days). We observed significant increases in feeding volume trajectories in responders compared with pre-stimulation (p < 0.05). taVNS-paired feeding rehabilitation appears safe and may improve oral feeding in infants with oromotor dyscoordination, increasing the rate of discharge without G-tube, warranting larger controlled trials.

Risk of Hospitalizations Following Gastrostomy in Children with Intellectual Disability

OBJECTIVE

To examine the frequency of hospital admissions before and after gastrostomy insertion in children with severe intellectual disability.

STUDY DESIGN

We conducted a retrospective cohort study using linked health administrative and disability data from Western Australia (WA) and New South Wales (NSW). Children born between 1983 and 2009 in WA and 2002 and 2010 in NSW who had a gastrostomy insertion performed (n = 673 [WA, n = 325; NSW, n = 348]) by the end of 2014 (WA) and 2015 (NSW) were included. Conditional Poisson regression models were used to evaluate the age-adjusted effect of gastrostomy insertion on acute hospitalizations for all-cause, acute lower respiratory tract infections (LRTI), and epilepsy admissions.

RESULTS

The incidence of all-cause hospitalizations declined at 5 years after procedure (WA cohort 1983-2009: incidence rate ratio, 0.70 [95% CI, 0.60-0.80]; WA and NSW cohort 2002-2010: incidence rate ratio, 0.63 [95% CI, 0.45-0.86]). Admissions for acute LRTI increased in the WA cohort and remained similar in the combined cohort. Admissions for epilepsy decreased 4 years after gastrostomy in the WA cohort and were generally lower in the combined cohort. Fundoplication seemed to decrease the relative incidence of acute LRTI admissions in the combined cohort.

CONCLUSIONS

Gastrostomy was associated with health benefits including reduced all-cause and epilepsy hospitalizations, but was not protective against acute LRTI. These decreases in hospitalizations may reflect improved delivery of nutrition and medications.

Gastrostomy Tube Feeding in Extremely Low Birthweight Infants: Frequency, Associated Comorbidities, and Long-term Outcomes

OBJECTIVE

To assess the frequency of gastrostomy tube (GT) placement in extremely low birth weight (ELBW) infants, associated comorbidities, and long-term outcomes.

STUDY DESIGN

Analysis of ELBW infants from 25 centers enrolled in the National Institute of Child Health and Human Development Neonatal Research Network's Generic Database and Follow-up Registry from 2006 to 2012. Frequency of GT placement before 18-22 months, demographic and medical factors associated with GT placement, and associated long-term outcomes at 18-22 months of corrected age were described. Associations between GT placement and neonatal morbidities and long-term outcomes were assessed with logistic regression after adjustment for center and common co-variables.

RESULTS

Of the 4549 ELBW infants included in these analyses, 333 (7.3%) underwent GT placement; 76% had the GT placed postdischarge. Of infants with GTs, 11% had birth weights small for gestational age, 77% had bronchopulmonary dysplasia, and 29% severe intraventricular hemorrhage or periventricular leukomalacia. At follow-up, 56% of infants with a GT had weight <10th percentile, 61% had neurodevelopmental impairment (NDI), and 55% had chronic breathing problems. After adjustment, small for gestational age, bronchopulmonary dysplasia, intraventricular hemorrhage/periventricular leukomalacia, poor growth, and NDI were associated with GT placement. Thirty-two percent of infants with GTs placed were taking full oral feeds at follow-up.

CONCLUSIONS

GT placement is common in ELBW infants, particularly among those with severe neonatal morbidities. GT placement in this population was associated with poor growth, NDI, and chronic respiratory and feeding problems at follow-up. The frequency of GT placement postneonatal discharge indicates the need for close nutritional follow-up of ELBW infants.

TRIAL REGISTRATION

ClinicalTrials.gov: NCT00063063.

Aerodigestive sampling reveals altered microbial exchange between lung, oropharyngeal, and gastric microbiomes in children with impaired swallow function

BACKGROUND

Children with oropharyngeal dysphagia have impaired airway protection mechanisms and are at higher risk for pneumonia and other pulmonary complications. Aspiration of gastric contents is often implicated as a cause for these pulmonary complications, despite being supported by little evidence. The goal of this study is to determine the relative contribution of oropharyngeal and gastric microbial communities to perturbations in the lung microbiome of children with and without oropharyngeal dysphagia and aspiration.

METHODS

We conducted a prospective cohort study of 220 patients consecutively recruited from a tertiary aerodigestive center undergoing simultaneous esophagogastroduodenoscopy and flexible bronchoscopy. Bronchoalveolar lavage, gastric and oropharyngeal samples were collected from all recruited patients and 16S sequencing was performed. A subset of 104 patients also underwent video fluoroscopic swallow studies to assess swallow function and were categorized as aspiration/no aspiration. To ensure the validity of the results, we compared the microbiome of these aerodigestive patients to the microbiome of pediatric patients recruited to a longitudinal cohort study of children with suspected GERD; patients recruited to this study had oropharyngeal, gastric and/or stool samples available. The relationships between microbial communities across the aerodigestive tract were described by analyzing within- and between-patient beta diversities and identifying taxa which are exchanged between aerodigestive sites within patients. These relationships were then compared in patients with and without aspiration to evaluate the effect of aspiration on the aerodigestive microbiome.

RESULTS

Within all patients, lung, oropharyngeal and gastric microbiomes overlap. The degree of similarity is the lowest between the oropharynx and lungs (median Jensen-Shannon distance (JSD) = 0.90), and as high between the stomach and lungs as between the oropharynx and stomach (median JSD = 0.56 for both; p = 0.6). Unlike the oropharyngeal microbiome, lung and gastric communities are highly variable across people and driven primarily by person rather than body site. In patients with aspiration, the lung microbiome more closely resembles oropharyngeal rather than gastric communities and there is greater prevalence of microbial exchange between the lung and oropharynx than between gastric and lung sites (p = 0.04 and 4x10-5, respectively).

CONCLUSIONS

The gastric and lung microbiomes display significant overlap in patients with intact airway protective mechanisms while the lung and oropharynx remain distinct. In patients with impaired swallow function and aspiration, the lung microbiome shifts towards oropharyngeal rather than gastric communities. This finding may explain why antireflux surgeries fail to show benefit in pediatric pulmonary outcomes.