title: Symptoms associated with hypersensitivity to gastric distention in functional dyspepsia.
abstract: OBJECTIVE
  Hypersensitivity to gastric distention has been reported in functional dyspepsia, but its characteristics and relevance to symptoms remain unclear. The aim of this study was to define hypersensitivity to gastric distention and its association to specific symptoms in functional dyspepsia.
  
  
  METHODS
  We used a gastric barostat to study sensitivity to gastric distention in 80 healthy subjects and in 160 functional dyspepsia patients. Demographic characteristics, gastric emptying, Helicobacter pylori status, gastric accommodation, and a dyspepsia symptom score were obtained from all patients and the relationship with visceral sensitivity was assessed using univariate and multivariate analysis.
  
  
  RESULTS
  The increase of intra-balloon pressure over intra-abdominal pressure needed to induce discomfort or pain is the most appropriate expression of sensitivity to gastric distention because it yields a meaningful lower range of normal and it is independent from age and body mass index. Hypersensitivity to gastric distention was found in 34% of the patients, who did not differ from the other patients in demographic and other pathophysiological characteristics. Hypersensitivity to distention was associated with a higher prevalence of postprandial pain, belching, and weight loss.
  
  
  CONCLUSIONS
  Hypersensitivity to gastric distention is present in a subset of functional dyspepsia patients. It is associated with symptoms of postprandial epigastric pain, belching, and weight loss.
authors.affiliation: Division of Gastroenterology, Department of Internal Medicine, University Hospital Gasthuisberg, University of Leuven, Leuven, Belgium. Jan.Tack@med.kuleuven.ac.be
authors.forename: J
authors.initials: J
authors.lastname: Tack
authors.forename: P
authors.initials: P
authors.lastname: Caenepeel
authors.forename: B
authors.initials: B
authors.lastname: Fischler
authors.forename: H
authors.initials: H
authors.lastname: Piessevaux
authors.forename: J
authors.initials: J
authors.lastname: Janssens
mesh_terms: D015746:Abdominal Pain / Q000175:diagnosis / Q000453:epidemiology / Q000503:physiopathology; D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D002404:Catheterization; D004415:Dyspepsia / Q000175:diagnosis* / Q000453:epidemiology / Q000503:physiopathology*; D005260:Female; D013271:Gastric Dilatation / Q000175:diagnosis* / Q000453:epidemiology / Q000503:physiopathology*; D005746:Gastric Emptying; D006801:Humans; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D015995:Prevalence