Influence of metronidazole resistance on efficacy of quadruple therapy for Helicobacter pylori eradication
Background—Metronidazole-containing eradication therapies are less effective for metronidazole resistantHelicobacter pylori. Although early data suggested improvement of the efficacy of bismuth triple therapy after the addition of acid suppressives, these findings were based on studies with small nu...
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Published in | Gut Vol. 42; no. 2; pp. 166 - 169 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
London
BMJ Publishing Group Ltd and British Society of Gastroenterology
01.02.1998
BMJ BMJ Publishing Group LTD |
Subjects | |
Online Access | Get full text |
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Summary: | Background—Metronidazole-containing eradication therapies are less effective for metronidazole resistantHelicobacter pylori. Although early data suggested improvement of the efficacy of bismuth triple therapy after the addition of acid suppressives, these findings were based on studies with small numbers of patients, incomplete post-eradication follow up, or omission of pretreatment susceptibility testing. Aims—To study the efficacy of quadruple therapy in the Amsterdam area, where the efficacy of bismuth triple therapy has been proved to be affected by metronidazole resistance. Patients and methods—Eighty two consecutive dyspeptic H pylori positive patients with either metronidazole susceptible (group I) or metronidazole resistant H pylori strains (group II) received quadruple therapy for one week: omeprazole 20 mg twice daily; colloidal bismuth subcitrate 120 mg four times a day; tetracycline 500 mg four times a day; metronidazole 500 mg three times a day. Susceptibility to metronidazole was determined by the E-test. Results—Intention to treat analysis showed thatH pylori infection had been cured in 42/43 patients (98%) in group I and 32/39 patients (82%) in group II (p = 0.02). Conclusion—The efficacy of quadruple therapy is significantly impaired in patients infected with metronidazole resistant H pylori. Therefore a non-metronidazole-containing regimen should preferably be used in areas known to have a high prevalence of pretreatment metronidazole resistance. |
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Bibliography: | PMID:9536938 ark:/67375/NVC-M98QJLCK-2 istex:C996C1B802031E87A9D2824D05E7EF17675CF9B2 local:gutjnl;42/2/166 Dr R W M van der Hulst, Department of Gastroenterology, Academic Medical Centre, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands. href:gutjnl-42-166.pdf ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0017-5749 1468-3288 1458-3288 |
DOI: | 10.1136/gut.42.2.166 |