Please use this identifier to cite or link to this item: https://hdl.handle.net/2440/7626
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dc.contributor.authorOmari, T.en
dc.contributor.authorBarnett, C.en
dc.contributor.authorSnel, A.en
dc.contributor.authorGoldsworthy, W.en
dc.contributor.authorHaslam, R.en
dc.contributor.authorDavidson, G.en
dc.contributor.authorKirubakaron, C.en
dc.contributor.authorBakewell, M.en
dc.contributor.authorFraser, R.en
dc.contributor.authorDent, J.en
dc.date.issued1998en
dc.identifier.citationJournal of Pediatrics, 1998; 133(5):650-654en
dc.identifier.issn0022-3476en
dc.identifier.issn1097-6833en
dc.identifier.urihttp://hdl.handle.net/2440/7626-
dc.description.abstract<h4>Objectives</h4>The aim of this study was to characterize the motor events responsible for gastroesophageal reflux (GER) and esophageal acid clearance in a cohort of healthy preterm infants.<h4>Study design</h4>Esophageal motility was recorded for 2 to 3 hours after a feeding in 24 preterm infants, 31 to 38 weeks' postmenstrual age, by using a sleeveside hole micromanometric assembly incorporating a pH probe.<h4>Results</h4>Sixty acid GER episodes were recorded by pH probe, and 133 non-acid GER episodes were recorded manometrically by the presence of esophageal common cavities. Of the 193 GER episodes, 159 (82%) were associated with transient lower esophageal sphincter relaxation (TLESR). TLESRs were significantly longer in duration than single swallows (15.1 seconds vs 5.6 seconds, P < .001) and had lower nadir pressures (0.8 mm Hg vs 2.3 mm Hg, P < .001). A total of 3216 esophageal body pressure waves were analyzed; 70% of swallow-induced pressure waves were peristaltic in sequence compared with 5% of swallow-unrelated pressure waves. During periods of esophageal acidification (pH below 4), peristaltic esophageal body pressure wave sequences cleared acid refluxate more effectively than nonperistaltic pressure wave sequences.<h4>Conclusions</h4>In healthy preterm infants, TLESRs are the predominant mechanism underlying GER, and esophageal clearance mechanisms are well developed by at least 31 weeks' postmenstrual age.en
dc.description.statementofresponsibilityTaher I. Omari, Christopher Barnett, Antonie Snel, Wendy Goldsworthy, Ross Haslam, Geoff Davidson, Chellam Kirubakaran, Malcolm Bakewell, Robert Fraser and John Denten
dc.language.isoenen
dc.publisherMOSBY-ELSEVIERen
dc.subjectEsophagus; Esophagogastric Junction; Gastric Acid; Humans; Gastroesophageal Reflux; Infant, Premature, Diseases; Gastric Acidity Determination; Cohort Studies; Manometry; Peristalsis; Infant, Newborn; Female; Maleen
dc.titleMechanisms of gastroesophageal reflux in healthy premature infantsen
dc.typeJournal articleen
dc.identifier.doi10.1016/S0022-3476(98)70106-4en
pubs.publication-statusPublisheden
dc.identifier.orcidOmari, T. [0000-0001-5108-7378]en
dc.identifier.orcidBarnett, C. [0000-0003-1717-3824]en
Appears in Collections:Paediatrics publications

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