title: Helicobacter pylori is a risk factor for peptic ulcer disease in cirrhotic patients. A meta-analysis.
abstract: BACKGROUND
  Peptic ulcer disease is highly prevalent in cirrhosis, and ulcer complications are a major cause of morbidity in these patients. Helicobacter pylori infection is considered the chief aetiological factor of ulcer disease. However, in cirrhotic patients the role of H. pylori in the pathogenesis of peptic ulcer remains uncertain.
  
  
  OBJECTIVE
  To evaluate the evidence of the pathogenic role of H. pylori infection in peptic ulcer disease in patients with cirrhosis.
  
  
  METHODS
  An extensive MEDLINE search of the literature was performed. Studies reporting the prevalence of H. pylori infection in cirrhotic patients with and without ulcers were selected. Meta-analysis was conducted using RevMan 4.0.3. Pooled odds ratios were calculated for each comparison, using a fixed model analysis.
  
  
  RESULTS
  The search identified seven studies with a total of 976 patients with cirrhosis (275 cases with ulcer disease and 701 controls). The prevalence of H. pylori infection in patients with peptic ulcer disease was higher than in those without. The pooled odds ratio was 2.70 (95% CI, 1.91-3.82). H. pylori infection was associated more or less equally with duodenal and gastric ulcers.
  
  
  CONCLUSIONS
  H. pylori infection increases the risk of peptic ulcer disease in patients with cirrhosis.
authors.affiliation: Unitat de Malalties Digestives, Corporació Parc Taulí, Parc Tauli s/n, 08208 Sabadell, Barcelona, Spain.
authors.forename: Mercedes
authors.initials: M
authors.lastname: Vergara
authors.forename: Xavier
authors.initials: X
authors.lastname: Calvet
authors.forename: Marta
authors.initials: M
authors.lastname: Roqué
mesh_terms: D004381:Duodenal Ulcer / Q000150:complications / Q000382:microbiology; D016481:Helicobacter Infections / Q000150:complications*; D016480:Helicobacter pylori; D006801:Humans; D008103:Liver Cirrhosis / Q000150:complications*; D016017:Odds Ratio; D010437:Peptic Ulcer / Q000150:complications / Q000382:microbiology*; D012307:Risk Factors; D013276:Stomach Ulcer / Q000150:complications / Q000382:microbiology