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Updated: Jun 3, 2026

Simultaneous Laryngopharyngeal and Conventional Esophageal pH Monitoring
Published on: December 14, 2020
Incidence of gastroesophageal reflux during transpyloric feeds
Rachel Rosen1, Kristen Hart, Mary Warlaumont
1Center for Motility and Functional Gastrointestinal Disorders, Children's Hospital Boston, Boston, MA 02115, USA. rachel.rosen@childrens.harvard.edu
Insights
Transpyloric feeding in children shows increased reflux events during feeding periods compared to nonfeeding periods. This may explain ongoing hospitalizations despite this feeding method.
Area of Science:
- Pediatric Gastroenterology
- Gastrointestinal Motility Disorders
Background:
- Transpyloric feeding is a proposed method to manage gastroesophageal reflux.
- Limited pediatric research exists on its impact on reflux burden.
Purpose of the Study:
- To assess the reflux burden in pediatric patients undergoing transpyloric feeding.
- To evaluate the effect of transpyloric feeding on gastroesophageal reflux.
Main Methods:
- Retrospective review of multichannel intraluminal impedance (MII) tracings in pediatric patients.
- Comparison of reflux profiles during feeding versus nonfeeding periods.
- Analysis of reflux-related hospitalizations before and after transpyloric feeding initiation.
Main Results:
- A trend towards more reflux events per hour during feeding periods (1.4) versus nonfeeding periods (0.8) was observed (P=0.06).
- No significant difference in esophageal bolus presence time between feeding (1.0%) and nonfeeding (0.6%) periods (P=0.5).
- No significant change in mean reflux-related hospitalizations before (1.2) and after (1.4) transpyloric feeding (P=0.7).
Conclusions:
- Transpyloric feeding periods are associated with a higher reflux burden.
- This increased reflux may contribute to persistent reflux-related hospitalizations in some pediatric patients.
- Further investigation into optimizing transpyloric feeding strategies for reflux control is warranted.
Objectives:
Transpyloric feeding has been proposed as an alternative method for controlling gastroesophageal reflux, but there have been no pediatric studies to determine how transpyloric feeding affects reflux burden. The aim of the present study was to determine the reflux burden in patients receiving transpyloric feeds.
Patients And Methods:
We reviewed the multichannel intraluminal impedance tracings of patients who had persistent symptoms and were fed transpylorically during the multichannel intraluminal impedance recording. We compared the reflux profiles during feed and nonfeed periods. We also compared the number of reflux-related hospitalizations at Children's Hospital Boston in the year before and the year after the initiation of transpyloric feeds.
Results:
The mean number of reflux events per hour was 1.4 ± 1.3 and 0.8 ± 1.1 during feed and nonfeed periods, respectively (P = 0.06). There was no significant difference in the percentage of time that boluses were present in the esophagus during feed periods (1.0% ± 1.4%) compared with the nonfeed periods (0.6% ± 1.1%, P = 0.5). There was no significant difference in the mean number of reflux-related hospitalizations in the year before (1.2 ± 1.4) or after (1.4 ± 1.2, P = 0.7) the initiation of transpyloric feeds.
Conclusions:
There is more reflux during transpyloric feeding periods than nonfeeding periods, which may explain why some patients continue to have reflux-related hospitalizations even after the initiation of transpyloric feeds.
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