Document Detail


24-h pH-metry and multichannel intraluminal impedance monitoring in obese patients with and without gastroesophageal reflux disease symptoms.
MedLine Citation:
PMID:  20835898     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
BACKGROUND: The 24-h ambulatory pH-metry with multichannel intraluminal impedance monitoring (24-h pH-metry+MII) allows the simultaneous assessment of chemical and physical properties of esophageal refluxes and the detection of its proximal migration.
METHODS: Gastroesophageal reflux (GER) was investigated in obese symptomatic (obese gastroesophageal reflux disease, GERD) and asymptomatic (obese non-GERD) patients. The data were compared with those obtained from non-obese GERD patients and a control group. Thirty-five (20 non-GERD, 15 GERD) obese patients and 15 non-obese GERD were investigated with 24-h pH-metry+MII. Ten normal weight subjects with normal 24-h pH-metry+MII were used as control group.
RESULTS: The percent time acid exposure was significantly higher in obese non-GERD than controls (p = 0.007). Acid reflux episodes were increased vs. controls in obese non-GERD (p = 0.005) and obese GERD (p = 0.034). Upright position showed a significant increase of reflux episodes in non-obese GERD (p = 0.034) and in obese non-GERD (p = 0.027) vs. controls. Recumbent position showed reflux episodes significantly increased vs. controls in obese non-GERD (p = 0.002), obese GERD (p = 0.021), and non-obese GERD (p = 0.033). In obese non-GERD, waist circumference (WC) correlated negatively with upright position episodes (r = -0.53; p = 0.043) and with proximal migration episodes, i.e., total (r = -0.60; p = 0.018), acid (r = -0.55; p = 0.033), and weakly acidic refluxes (r = -0.56; p = 0.031).
CONCLUSIONS: Obese patients showed an increased number of refluxes with acid content. Refluxes with proximal extent were significantly higher in obese non-GERD than in controls and non-obese GERD patients. No difference was observed between the two obese patient groups. In asymptomatic obese patients, the WC correlated with proximal extent episodes.
Authors:
Giorgio Ricci; Calogero Amella; Edoardo Forti; Angelo Rossi; Gianluca Bersani; Silvia Dari; Veronica Pasini; Antonella Maimone; Vittorio Alvisi
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Obesity surgery     Volume:  21     ISSN:  1708-0428     ISO Abbreviation:  Obes Surg     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2010-12-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9106714     Medline TA:  Obes Surg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  48-53     Citation Subset:  IM    
Affiliation:
Department of Clinical and Experimental Medicine, Postgraduate School of Gastroenterology, University of Ferrara, Ferrara, Italy. giorgio.ricci@unife.it
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