PT - JOURNAL ARTICLE AU - SJO. Veldhuyzen van Zanten AU - P. M. Sherman AU - R. H. Hunt TI - Helicobacter pylori: new developments and treatments DP - 1997 Jun 01 TA - Canadian Medical Association Journal PG - 1565--1574 VI - 156 IP - 11 4099 - http://www.cmaj.ca/content/156/11/1565.short 4100 - http://www.cmaj.ca/content/156/11/1565.full SO - CMAJ1997 Jun 01; 156 AB - The authors highlight new developments in research on Helicobacter pylori. There is now consensus that all patients with newly diagnosed or recurrent duodenal or gastric ulcers who have a positive test result for H. pylori should be treated for the infection. Patients presenting with complications of ulcers, such as bleeding, should also be treated. H. pylori has recently been classified as a definite human carcinogen by the International Agency for Research on Cancer. In treatment, new combination regimens, consisting of 3 or 4 different drugs, cure the infection in more than 80% of patients. Currently, the best combinations are: (1) omeprazole (or another proton-pump inhibitor), clarithromycin and metronidazole, (2) omeprazole (or another proton-pump inhibitor), clarithromycin and amoxicillin, (3) bismuth subsalicylate, tetracycline and metronidazole, and (4) omeprazole, bismuth subsalicylate, tetracycline and metronidazole.