Modified quadruple therapy after Helicobacter pylori eradication failure

Abstract

Objective To evaluate the efficacy of modified quadruple therapy for patients who were failed in previous Helicobacter pylori (Hp) eradication treatment. Methods A total of 86 patients with confirmed Hp infection and failed in previous Hp eradication treatment were collected from Qingdao Municipal Hospital during January 2012 and January 2014. Patients were randomly assigned into two group: 43 patients in control group were given conventional quadruple therapy (rabeprazole + colloidal bismuth pectin + amoxicillin + clarithromycin for 14 d), and 43 patients in test group were given modified quadruple therapy (rabeprazole + colloidal bismuth pectin + amoxicillin + clarithromycin for 7 d, and lansoprazole + colloidal bismuth pectin + levofloxacin+ metronidazole for 7 d). Chi square test was performed to analyze per-protocol (PP) eradication rates, intent-to-treat (ITT) eradication rates, and Hp recurrence rates between two groups. Results Among 43 patients in test group, 42 completed treatments with PP eradication rate of 100.00% and ITT eradication rate of 97.67%. All patients in control group completed treatments, and Hp eradication was observed in 24 patients, and both PP and ITT eradication rates were 55.81%. The differences in PP and ITT eradication rates between two groups were of statistical significance (χ2=23.90 and 21.11, P 0.05). Conclusion The efficacy of modified quadruple therapy for patients who were failed in the previous Hp eradication treatment is satisfactory. Key words: Helicobacter pylori; Therapy; Eradication rate; Recurrence