About this trial
The goal of this clinical trial is to learn if transpyloric tube feeding (feeding directly into the small intestine) versus gastric tube feeding tolerably and effectively reduces gastroesophageal reflux in infants born premature who have been diagnosed with bronchopulmonary dysplasia. The main questions this trial aims to answer are:
Does transpyloric as compared to gastric tube feeding result in differences in the amount of experienced hypoxemia (low oxygen level in the blood) or serious adverse events?
Does transpyloric as compared to gastric tube feeding reduce the frequency and severity of gastroesophageal reflux (GER) measured using 24 hour esophageal pH-multichannel intraluminal impedance (pH-MII) monitoring?
Participants will:
Undergo pre-trial 24 hour pH-MII monitoring to determine baseline severity of GER.
Be randomly assigned to receive transpyloric or gastric tube feeding for 2 weeks.
Undergo repeat pH-MII at the end of the 2 week trial to assess for change in GER.
Undergo continuous pulse oximetry to record level of hypoxemia during the 2 week trial.
Undergo saliva and airway (if supported by a breathing tube) fluid collection to measure biomarkers of GER.
Be monitored clinically for possible adverse events.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Birth <32 weeks' gestation
Current postmenstrual age of 36-65 weeks
Grade 2-3 bronchopulmonary dysplasia (BPD: treatment with positive airway pressure at 36 weeks' PMA) or grade 1 BPD (treatment with ≤2L/min flow nasal cannular at 36 weeks' PMA) with subsequent need for prolonged positive airway pressure and full enteral tube feedings
Treatment with positive airway pressure (high flow nasal cannula, non-invasive positive airway pressure, or invasive ventilation) at enrollment
Disqualifiers
Transpyloric feedings received within 7d of enrollment
Use of a gastric acid suppression, GI promotility drug, or caffeine within 7d of enrollment
History of gastrostomy tube placement, gastric fundoplication, or bowel resection resulting in short gut with contraindication to transpyloric feeding
Plan to wean off positive airway pressure (for non-intubated subjects) or to be extubated to non-invasive support (for subjects receiving invasive ventilation) within the 2wk trial
Trial design
Parallel
Treatments tested in this trial
Transpyloric tube feeding
Other interventionTube feeding into the small bowel
Gastric tube feeding
Other interventionTube feeding into the stomach
Treatment groups
Trial outcomes
Primary outcomes
Proportion (%) of time per day with oxygen saturation <80%
Oxygen saturation will be measured by continuous pulse oximetry throughout the 2 week trial. The proportion of time per day with an oxygen saturation (SpO2) less than 80% will be calculated and reported as a median value observed over the 2 week trial.
Serious adverse events
A serious adverse event (SAE) will be defined as any adverse experience that is at least possibly related to the study intervention and results in any of the following outcomes: * death, * a life-threatening event (at risk of death at the time of the event), * prolongation of existing hospitalization beyond what would be expected for a preterm infant who requires extended respiratory support near and beyond term corrected gestation, or * a persistent or significant disability/incapacity.
Secondary outcomes
Total number of gastroesophageal reflux (GER) episodes
The total number of GER episodes during a 24 hour period will be measured using 24 hour esophageal pH-multichannel intraluminal impedance (pH-MII) monitoring. Testing is performed by inserting a pH-MII catheter into the esophagus via the nasal or oral route. Reflux episodes are recorded during a 24 hour monitoring period and the total number is tabulated. 24 hour pH-MII testing will be performed prior to randomization and on day 14 (last day) of the clinical trial.
Proportion of GER episodes reaching the proximal pH-MII sensor
The number of GER episodes detected by 24 hour esophageal pH-MII monitoring that reach the proximal sensor will be recorded and divided by the total number of recorded impedance episodes (regardless of esophageal height)
Total number of pH (acid) only reflux episodes
The total number of reflux episodes with a pH\<4 will be recorded during 24 hour pH-MII monitoring
Salivary and tracheal pepsin concentration
Saliva and tracheal samples will be collected by gentle suctioning and analyzed for concentration of pepsin, a biomarker of GER. Quantification will be performed using commercially available assay.
Sponsors and contacts
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Children's Hospital of Philadelphia
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
Collaborator
Lucile Packard Children's Hospital
Collaborator