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Factors influencing lower esophageal sphincter relaxation after deglutition
Linköping University, Department of Clinical and Experimental Medicine, Surgery. Linköping University, Faculty of Health Sciences.
Linköping University, Department of Clinical and Experimental Medicine, Surgery. Linköping University, Faculty of Health Sciences.
Linköping University, Department of Clinical and Experimental Medicine, Surgery. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Centre for Surgery, Orthopaedics and Cancer Treatment, Department of Surgery in Östergötland.
2011 (English)In: World Journal of Gastroenterology, ISSN 1007-9327, E-ISSN 2219-2840, Vol. 17, no 23, 2844-2847 p.Article in journal (Refereed) Published
Abstract [en]

AIM: To study the relationship between upper esophageal sphincter (UES) relaxation, peristaltic pressure and lower esophageal sphincter (LES) relaxation following deglutition in non-dysphagic subjects. METHODS: Ten non-dysphagic adult subjects had a high-resolution manometry probe passed transnasally and positioned to cover the UES, the esophageal body and the LES. Ten water swallows in each subject were analyzed for time lag between UES relaxation and LES relaxation, LES pressure at time of UES relaxation, duration of LES relaxation, the distance between the transition level (TL) and the LES, time in seconds that the peristaltic wave was before (negative value) or after the TL when the LES became relaxed, and the maximal peristaltic pressure in the body of the esophagus. RESULTS:Relaxation of the LES occurred on average 3.5 s after the bolus had passed the UES and in most cases when the peristaltic wave front had reached the TL. The LES remained relaxed until the peristaltic wave faded away above the LES. CONCLUSION: LES relaxation seemed to be caused by the peristaltic wave pushing the bolus from behind against the LES gate.

Place, publisher, year, edition, pages
Baishideng Publishing Group Co. Limited , 2011. Vol. 17, no 23, 2844-2847 p.
Keyword [en]
Deglutition; Lower esophageal sphincter; Peristalsis; Relaxation; Upper esophageal sphincter
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-69849DOI: 10.3748/wjg.v17.i23.2844ISI: 000292115500008OAI: oai:DiVA.org:liu-69849DiVA: diva2:433441
Available from: 2011-08-10 Created: 2011-08-08 Last updated: 2017-12-08

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Franzen, Thomas

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