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Type: Journal article
Title: Mechanism of gastroesophageal reflux in premature infants with chronic lung disease
Author: Omari, T.
Barnett, C.
Snel, A.
Davidson, G.
Haslam, R.
Bakewell, M.
Dent, J.
Citation: Journal of Pediatric Surgery, 1999; 34(12):1795-1798
Issue Date: 1999
ISSN: 0022-3468
Statement of
T. Omari, C. Barnett, A. Snel, G. Davidson, R. Haslam, M. Bakewell, and J. Dent
Abstract: BACKGROUND/PURPOSE:The aim of this study was to characterize the motor events responsible for gastroesophageal reflux (GER) and esophageal acid clearance in a cohort of preterm infants with chronic lung disease (CLD). METHODS:Esophageal motility was recorded for 2 to 3 hours postprandially in 14 preterm infants with mild-moderate or moderate-severe CLD at 33 to 39 weeks postmenstrual age using a sleeve-side hole micromanometric assembly into which a pH probe had been installed. RESULTS:Twenty-six acid GER episodes were recorded by pH probe. Of these, 22 (85%) were associated with transient lower esophageal sphincter (LES) relaxation. Transient LES relaxations were significantly longer in duration than single swallows (13.7 seconds v 4.6 seconds, P < .001) and had lower nadir pressures (1.1 mm Hg v 2.5 mm Hg, P < .001). During periods of esophageal acidification (pH below 4), peristaltic esophageal body pressure wave sequences cleared acid refluxate more effectively than nonperistaltic pressure wave sequences. CONCLUSIONS:In preterm infants with CLD, transient LES relaxations are the predominant mechanism underlying GER, and esophageal clearance mechanisms are fully functional, which is similar to that seen in healthy preterm infants.
Keywords: Chronic lung disease
preterm neonate
acid gastroesophageal reflux
esophageal motility
esophageal acid clearance
transient lower esophageal sphincter relaxation.
Rights: Copyright © 1999 Published by Elsevier Inc.
DOI: 10.1016/S0022-3468(99)90315-9
Appears in Collections:Aurora harvest
Paediatrics publications

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