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  • Title: Comparison of 10-day levofloxacin bismuth-based quadruple therapy and levofloxacin-based triple therapy for Helicobacter pylori.
    Author: Wu TS, Hsu PI, Kuo CH, Hu HM, Wu IC, Wang SSW, Chen YH, Wu DC, Su WW, Kuo FC.
    Journal: J Dig Dis; 2017 Sep; 18(9):537-542. PubMed ID: 28644575.
    Abstract:
    OBJECTIVE: This was a prospective study aiming to investigate whether levofloxacin plus bismuth-based quadruple therapy was more effective than levofloxacin-based triple therapy after failed first-line eradication therapies for Helicobacter pylori (H. pylori) infection. METHODS: Sixty-seven patients infected with H. pylori were randomly assigned to two groups; the levofloxacin plus bismuth-based quadruple therapy group (RBAL [n = 33]; rabeprazole 20 mg twice daily, bismuth subcitrate 120 mg four times daily, amoxicillin 1 g twice daily and levofloxacin 500 mg once daily, for 10 days) and the levofloxacin-based triple therapy group (RAL [n = 34]; rabeprazole 20 mg twice daily, amoxicillin 1 g twice daily and levofloxacin 500 mg once daily, for 10 days). Endoscopy was performed 4-8 weeks after H. pylori eradication to assess treatment response. We followed up patient response and compliance and checked their resistance to antibiotics. RESULTS: Intention-to-treat analysis revealed that both groups had similar eradication rates (RBAL vs RAL: 84.8% [95% confidence interval {CI} 72.6-97.1%] vs 67.6% [95% CI 51.9-83.4%], P = 0.0987). No significant differences in compliance or adverse events were found (P = 0.9829 and 0.0720). Epsilometer test showed that most eradication failure cases were levofloxacin-resistant. CONCLUSIONS: Adding bismuth subcitrate to levofloxacin-based triple therapy was not more effective than not doing so, but no further side effects were noted. Both eradication therapies were equally safe and patients had the same tolerance to both regimens. Resistance rate to levofloxacin may be important when choosing second-line therapy.
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