Document Detail


The role of weakly acidic reflux in proton pump inhibitor failure, has dust settled?
MedLine Citation:
PMID:  20680164     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Patients that do not respond satisfactorily to standard proton pump inhibitor (PPI) treatment have become the most common presentation of gastro-esophageal reflux disease (GERD) in third referral gastrointestinal practices. The causes of refractory GERD include lack of compliance with treatment, residual acid reflux and weakly acidic reflux, esophageal hypersensitivity and persistent symptoms not associated with reflux. A role for weakly acidic reflux in symptom generation has been proposed since the availability of impedance-pH monitoring. The possible mechanisms by which persistent weakly acidic reflux might contribute to persistent symptoms in patients under PPI treatment may include esophageal distension by increased reflux volume, persistent impaired mucosal integrity (ie, dilation of intercellular spaces) and/or esophageal hypersensitivity to weakly acidic reflux events. To establish a definite role of weakly acidic reflux in refractory GERD, outcome studies targeting this type of reflux are still lacking. Treatment strategies to reduce the number or effect of weakly acidic reflux could involve drugs that decrease transient lower esophageal sphincter relaxations (ie, baclofen or similar), improve oesophageal mucosa resistance or visceral pain modulators. Finally, anti-reflux surgery can be considered, only if a clear symptom-weakly acidic reflux association was demonstrated.
Authors:
Emmanouela Tsoukali; Daniel Sifrim
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Publication Detail:
Type:  Journal Article     Date:  2010-07-27
Journal Detail:
Title:  Journal of neurogastroenterology and motility     Volume:  16     ISSN:  2093-0887     ISO Abbreviation:  J Neurogastroenterol Motil     Publication Date:  2010 Jul 
Date Detail:
Created Date:  2010-08-03     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101530189     Medline TA:  J Neurogastroenterol Motil     Country:  Korea (South)    
Other Details:
Languages:  eng     Pagination:  258-64     Citation Subset:  -    
Affiliation:
Barts and The London School of Medicine and Dentistry, Queen Mary, University of London, UK.
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