Document Detail

Impact of acid suppression on upper gastrointestinal pH and motility.
MedLine Citation:
PMID:  21086166     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Proton pump inhibitors (PPIs), widely prescribed to patients with upper gastrointestinal symptoms, alter intragastric pH, and may affect upper gastrointestinal transit and motility parameters in addition to affecting the ability to determine Wireless Motility Capsule (WMC) gastric emptying time.
AIM: To assess PPI effect on motility parameters of the upper gastrointestinal tract and to determine if PPIs confound ability of WMC to measure gastric emptying time.
METHODS: Twenty healthy subjects were treated with esomeprazole 40 mg bid for 1 week. Another 50 healthy subjects underwent evaluation in absence of PPIs. All subjects underwent WMC test after meal ingestion. After a rapid, sustained luminal pH rise ≥ 0.5 pH units, marking potential gastric emptying time of WMC, an abdominal X-ray (KUB) was taken for gastric emptying time confirmation. Mean pH, pressure and transit time were compared between PPI-treated and untreated groups.
RESULTS: There was no difference in gastric emptying time, small bowel transit time (SBTT), or pressure profiles between the groups. The pH in all cases rose ≥ 0.5 pH units. Distal small bowel pH was significantly lower in subjects on PPIs. Gastric emptying time was identified in all subjects treated with PPIs. Pressure and slope criteria were developed to confirm the time of emptying.
CONCLUSION: PPI therapy does not have a significant impact on upper gastrointestinal transit and motility but it does decrease distal small bowel pH. The medication reduced the magnitude of pH change at gastric emptying time but using additional criteria based on slope and contraction frequency, WMC was able to measure gastric emptying time in all patients treated with PPIs.
Whitney Michalek; John R Semler; Braden Kuo
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-11-18
Journal Detail:
Title:  Digestive diseases and sciences     Volume:  56     ISSN:  1573-2568     ISO Abbreviation:  Dig. Dis. Sci.     Publication Date:  2011 Jun 
Date Detail:
Created Date:  2011-05-19     Completed Date:  2011-07-28     Revised Date:  2013-01-07    
Medline Journal Info:
Nlm Unique ID:  7902782     Medline TA:  Dig Dis Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1735-42     Citation Subset:  AIM; IM    
Massachusetts General Hospital, 55 Fruit St GRJ 274, Boston, MA 02114, USA.
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MeSH Terms
Capsule Endoscopy
Esomeprazole Sodium / pharmacology*
Gastrointestinal Motility / physiology*
Hydrogen-Ion Concentration
Proton Pump Inhibitors / pharmacology*
Upper Gastrointestinal Tract / drug effects*,  physiology*
Reg. No./Substance:
0/Proton Pump Inhibitors; L2C9GWQ43H/Esomeprazole Sodium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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