title: Observational survey of NSAID-related upper gastro-intestinal adverse events in Belgium.
abstract: OBJECTIVE
  To evaluate the impact of NSAID use on current routine upper GI endoscopy (UGIE) and to compare the lesions found in NSAID users and non-users.
  
  
  METHODS
  Participating gastroenterologists consecutively documented outpatients with and without suspicion of bleeding, referred for upper gastrointestinal endoscopy. Patient characteristics, presence of risk factors, NSAID use and endoscopic findings were reported on standard data collection forms.
  
  
  RESULTS
  A total of 2685 non-bleeding and 159 bleeding patients were enrolled within a time period of 2 months. NSAID therapy was present in 20% of the non-bleeding patients and at least 9% of referrals for endoscopy were directly related to suspected NSAID adverse events. Nearly half of acute bleeding patients (42%) were NSAID users, including aspirin for cardioprevention. Warning digestive symptoms prior to acute bleeding were frequently absent (56%). Oesophagitis was the main endoscopic diagnosis (51% of patients). Gastroduodenal (GD) ulcer was significantly more frequent in NSAID users, whereas oesophagitis and bleeding oesophageal varices were more frequent among non-users. Analysis of odds ratio's demonstrated NSAID use to significantly increase the risk for gastric ulcer in the whole patient group (OR = 2.73; 95% confidence interval (CI): 1.98-3.77; p < 0.001) and, in addition, for duodenal ulcer in the elderly (> 65 y) subgroup (OR = 2.91; 95% CI: 1.52-5.59; p < 0.05).
  
  
  CONCLUSIONS
  This survey confirms the high incidence of GD ulcers in NSAID users and the risk for serious gastrointestinal complications, often occurring without warning symptoms. It underlines the impact of NSAID use on the routine endoscopy load, the necessity of careful selection of patients for NSAID prescriptions and the need for gastropreventive measures, particularly in elderly patients and patients associating multiple risk factors.
authors.affiliation: Department of Gastroenterology, CHU Sart-Tilman, Liège, Belgium.
authors.forename: J
authors.initials: J
authors.lastname: Belaiche
authors.forename: A
authors.initials: A
authors.lastname: Burette
authors.forename: M
authors.initials: M
authors.lastname: De Vos
authors.forename: E
authors.initials: E
authors.lastname: Louis
authors.forename: M
authors.initials: M
authors.lastname: Huybrechts
authors.forename: M
authors.initials: M
authors.lastname: Deltenre
mesh_terms: D000328:Adult; D017677:Age Distribution; D000368:Aged; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000009:adverse effects* / Q000627:therapeutic use; D001530:Belgium / Q000453:epidemiology; D016001:Confidence Intervals; D003625:Data Collection; D004305:Dose-Response Relationship, Drug; D016099:Endoscopy, Gastrointestinal; D005260:Female; D005753:Gastric Mucosa / Q000187:drug effects; D006471:Gastrointestinal Hemorrhage / Q000139:chemically induced* / Q000175:diagnosis / Q000453:epidemiology*; D006801:Humans; D015994:Incidence; D007413:Intestinal Mucosa / Q000187:drug effects; D008297:Male; D008875:Middle Aged; D016017:Odds Ratio; D012016:Reference Values; D012307:Risk Factors; D017678:Sex Distribution; D011795:Surveys and Questionnaires
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal