Trial reportBMC gastroenterology2015
Volume, distribution and acidity of gastric secretion on and off proton pump inhibitor treatment: a randomized double-blind controlled study in patients with gastro-esophageal reflux disease (GERD) and healthy subjects.
Trial report in BMC gastroenterology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01212614 (A Study for Measurement of Gastric Secretion by Magnetic Resonance Imaging), which is not on this map. Cited by 8 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
A Study for Measurement of Gastric Secretion by Magnetic Resonance Imaging (MRI) Under Inhibition of Gastric Secretion by Proton Pump Inhibitors in Healthy Subjects and Patients With Reflux Disease
Who cites it
8 citing papers in PubMed, 1 synthesis or guideline pooled it, 34 citations in OpenAlex.
- Impact of Gastroesophageal Reflux Disease on Salivary Flow Rate, pH and Buffer Capacity: A Systematic Review and Meta-Analysis.Journal of oral rehabilitation · 2025Pooled it
- Gastric Mixing and Acid Diffusion in a Human Stomach Simulated Using Smoothed Particle Hydrodynamics.Journal of food science · 2025Article
- Why think twice before prescribing proton pump inhibitors.European journal of pediatrics · 2025Review
- Review
- Article
- Non-tuberculous mycobacterial lung disease due to multiple "minor" risk factors: an illustrative case and a review of these "lesser elements".Journal of thoracic disease · 2020Article
- Adult and paediatric GERD: diagnosis, phenotypes and avoidance of excess treatments.Nature reviews. Gastroenterology & hepatology · 2016Review
- Gastric Volume and Its Relationship to Underlying Pathology or Acid-suppressing Medication.Anesthesia, essays and researchesArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundPostprandial accumulation of gastric secretions in the proximal stomach above the meal adjacent to the esophagogastric junction (EGJ), referred to as the 'acid pocket', has been proposed as a pathophysiological factor in gastro-esophageal reflux disease (GERD) and as a target for GERD treatment. This study assessed the effect of proton pump inhibitor (PPI) therapy on the volume, distribution and acidity of gastric secretions in GERD and healthy subjects (HS).
methodsA randomized, double blind, cross-over study in 12 HS and 12 GERD patients pre-treated with 40 mg pantoprazole (PPI) or placebo b.i.d. was performed. Postprandial secretion volume (SV), formation of a secretion layer and contact between the layer and the EGJ were quantified by Magnetic Resonance Imaging (MRI). Multi-channel pH-monitoring assessed intragastric pH.
resultsA distinct layer of undiluted acid secretion was present on top of gastric contents in almost all participants on and off high-dose acid suppression. PPI reduced SV (193 ml to 100 ml, in HS, 227 ml to 94 ml in GERD; p < 0.01) and thickness of the acid layer (26 mm to 7 mm, 36 mm to 9 mm respectively, p < 0.01). No differences in secretion volume or layer thickness were observed between groups; however, off treatment, contact time between the secretion layer and EGJ was 2.6 times longer in GERD compared to HS (p = 0.012). This was not the case on PPI.
conclusionsMRI can visualize and quantify the volume and distribution dynamics of gastric secretions that form a layer in the proximal stomach after ingestion of a liquid meal. The secretion volume and the secretion layer on top of gastric contents is similar in GERD patients and HS; however contact between the layer of undiluted secretion and the EGJ is prolonged in patients. High dose PPI reduced secretion volume by about 50% and reduced contact time between secretion and EGJ towards normal levels.
trial registrationNCT01212614.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.