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  • Title: The effect of culture results for Helicobacter pylori on the choice of treatment following failure of initial eradication.
    Author: Avidan B, Melzer E, Keller N, Bar-Meir S.
    Journal: Isr Med Assoc J; 2001 Mar; 3(3):163-5. PubMed ID: 11303370.
    Abstract:
    BACKGROUND: Current treatment for the eradication of Helicobacter pylori in patients with peptic disease is based on the combination of antibiotic and anti-acid regimens. Multiple combinations have been investigated, however no consensus has been reached regarding the optimal duration and medications. OBJECTIVES: To assess the efficacy of two treatment regimens in patients with peptic ulcer disease and non-ulcer dyspepsia, and to determine the need for gastric mucosal culture in patients failing previous treatment. METHODS: Ninety patients with established peptic ulcer and NUD (with previously proven ulcer) were randomly assigned to receive either bismuth-subcitrate, amoxycillin and metrnidazole (BAM) or lansoprasole, clarithromycine and metronidazole (LCM) for 7 days. Patients with active peptic disease were treated with ranitidine 300 mg/day for an additional month. RESULTS: Eradication failed in 8 of the 42 patients in the BAM group and in 2 of the 43 patients in the LCM group, as determined by the 13C urea breath test or rapid urease test (19% vs. 5%, respectively, P = 0.05). Five of these 10 patients were randomly assigned to treatment with lansoprazole, amoxycillin and clarithromycin (LAC) regardless of the culture obtained, and the other 5 patients were assigned to treatment with lansoprazole and two antibacterial agents chosen according to a susceptibility test. Eradication of H. pylori was confirmed by the 13C urea breath test. The same protocol (LAC) was used in all patients in the first group and in four of the five patients in the second group. The culture results did not influence the treatment protocol employed. CONCLUSIONS: Combination therapy based on proton pump inhibitor and two antibiotics is superior to bismuth-based therapy for one week. Gastric-mucosal culture testing for sensitivity of H. pylori to antibiotics is probably unnecessary before the initiation of therapy for patients with eradication failure.
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