WHICH PEPTIC-ULCERS BLEED - RESULTS OF A CASE-CONTROL STUDY

Background: The incidence of ulcer bleeding has not decreased despite effective medical treatment of peptic ulcer disease. Numerous studies have been performed on risk factors for ulcer bleeding, but only a few studies have related the risk of developing ulcer bleeding to the ris k of developing uncomplicated ulcer disease. Methods: This study was p erformed as a multicenter interdisciplinary case-control study and was based on diagnosis by endoscopy, prospective data collection, and mul tivariate analysis. To every study patient with ulcer bleeding (case) one patient with uncomplicated peptic ulcer proven at endoscopy (contr ol) was assigned with regard to sex, ulcer localization, and age (+/- 5 years). The controls were randomly taken from three sources: inpatie nts, outpatients, and patients treated by a private physician. Results : Owing to strict inclusion and exclusion criteria, 209 matched pairs were available for evaluation out of 401 patients with peptic ulcer bl eeding. In univariate analysis the duration of ulcer pain and the numb er of previous ulcer treatments proved to be protective factors for ul cer bleeding. The intake of nonsteroidal anti-inflammatory drugs (NSAI D) as a whole, acetylsalicylic acid (aspirin), and paracetamol gave an increased risk for ulcer bleeding. Multivariate analysis identified f our risk factors for peptic ulcer bleeding: lung disease, NSAID intake , no pretreatment with Hz blockers, and acetylsalicylic acid intake. C onclusions: The following patient groups represent a risk for peptic u lcer bleeding: multimorbid patients, receiving NSAID and/or aspirin, a nd patients with no previous ulcer history.