Document Detail

Measurement of acid exposure of proximal esophagus: a better tool for diagnosing non-erosive reflux disease.
MedLine Citation:
PMID:  21595802     Owner:  NLM     Status:  Publisher    
Background  The sensitivity of 24-h pH monitoring is poor in non-erosive reflux disease (NERD). In NERD patients, the proximal extent of acid reflux is one of the main determinants of reflux perception. The present study was aimed to compare the diagnostic accuracy of acid exposure time (AET), at 5 cm above the lower esophageal sphincter, with those at 10 cm and at 3 cm below the upper esophageal sphincter as well as the reproducibility of these parameters. Methods  A total of 93 consecutive NERD patients, with typical symptoms responsive to proton pump inhibitor treatment, and 40 controls underwent esophageal manometry and multi-channel 24-h pH-test; 13 patients underwent the same study on two occasions. Symptom association probability (SAP) values were evaluated at each esophageal level. Key Results  The ROC curve indicates that the area under the curve was 0.79 at distal (SE = 0.039), 0.87 (SE = 0.032) at proximal (P = 0.029 vs distal), and 0.85 (SE = 0.033) at very proximal esophagus (P = 0.148). AET showed a reproducibility of 61% (Kappa 0.22) at distal esophagus, 77% (Kappa 0.45) at proximal and 53% (Kappa 0.05) at very proximal esophagus. The percentage of patients with a positive SAP was not significantly different when assessed at the distal compared with the proximal esophagus. Conclusions & Inferences  In NERD patients, the diagnostic yield of the pH test is significantly improved by the assessment of AET at the proximal esophagus. As this variable seems to be less affected by the day to day variability, it could be considered a reliable and useful diagnostic tool in NERD patients.
S Emerenziani; M Ribolsi; P Pasqualetti; M Cicala
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-5-20
Journal Detail:
Title:  Neurogastroenterology and motility : the official journal of the European Gastrointestinal Motility Society     Volume:  -     ISSN:  1365-2982     ISO Abbreviation:  -     Publication Date:  2011 May 
Date Detail:
Created Date:  2011-5-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9432572     Medline TA:  Neurogastroenterol Motil     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2011 Blackwell Publishing Ltd.
Department of Digestive Disease, Campus Bio Medico University, Rome, Italy Medical Statistics & Information Technology, SeSMIT Fatebenefratelli, Association for Research-AFaR, Isola Tiberina, Rome, Italy.
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