The OAC and OMC options

Publisher Website
Google Scholar
Abstract
In three studies, the two most successful regimens in the MACH1 study (omeprazole-amoxycillin-clarithromycin (OAC) and omeprazole-metronidazole-clarithromycin (OMC)) were investigated further. Double-blind, randomized, international, multi-centre studies with parallel groups. The studies were performed at centres in France, Germany, Ireland, Norway, Sweden and the UK (MACH2), Canada (DU-MACH) and Germany, Hungary and Poland (GU-MACH). In MACH2, the influence of omeprazole on eradication was investigated in patients with duodenal ulcers in remission, using OAC, AC, OMC and MC. In DU-MACH and GU-MACH, eradication and relapse rates were investigated in patients with active peptic ulcers, using: OAC, OMC and omeprazole alone. Eradication of Helicobacter pylori. In patients with active peptic ulcer, ulcer healing was also assessed. In MACH2 (n = 514, intention-to-treat (ITT) analysis), the addition of omeprazole to AC increased the eradication rate from 26 to 94%. The corresponding increase for MC/ OMC was from 69 to 87%. The efficacy of the AC and OAC regimens was unaffected by primary metronidazole resistance, while that of MC was halved and that of OMC reduced by 15%. Clarithromycin resistance was uncommon. In DU-MACH and GU-MACH (n = 146 and 145, ITT analysis), eradication rates were high with both regimens. Ulcer healing rates were also high in all treatment groups; ulcer relapse was significantly less frequent in the OAC and OMC groups. All regimens were well tolerated. Omeprazole triple therapy is highly effective in patients with active or healed peptic ulcer disease, and is well tolerated.

This publication has 0 references indexed in Scilit: