title: The efficacy of bismuth containing quadruple therapy as a first-line treatment option for Helicobacter pylori.
abstract: BACKGROUND
  Helicobacter pylori eradication rates have tended to decrease recently, mostly due to increasing antibiotic-resistance. The present study aimed to compare the efficacy of bismuth-based quadruple regimen with proton pump inhibitor-based triple regimen for eradication of H. pylori.
  
  
  METHODS
  Consecutive H. pylori-positive patients with non-ulcer dyspepsia were randomized into one of two regimens: (i) bismuth subsalicylate 300 mg q.i.d., lansoprazole 30 mg b.i.d., tetracycline 500 mg q.i.d. and metronidazole 500 mg t.i.d. (BLTM group) for 14 days; (ii) lansoprazole 30 mg b.i.d., amoxicillin 1 g b.i.d and clarithromycin 500 mg b.i.d. (LAC) for 14 days. Gastroscopy and (14)C-Urea breath test (UBT) were performed before enrollment, and UBT only was repeated for 6 weeks after treatment.
  
  
  RESULTS
  A total of 240 patients were randomized into groups and 212 of them completed the protocols. The 'intention-to-treat' (ITT) and 'per protocol' (PP) H. pylori eradication rates were 70% (95%CI 61-78) and 82.3% (95%CI 74-89) in the BLTM group, and 57.5% (95%CI 48-66) and 62.7% (95%CI 53-71) in the LAC group. The BLTM treatment achieved a significantly better eradication rate compared with LAC treatment in PP analysis (82.3% vs. 62.7%, P = 0.002). Mild to severe side-effects, which were more frequent in the BLTM group, were reported in 18.2% of the patients.
  
  
  CONCLUSIONS
  The bismuth-based quadruple regimen achieved a better eradication rate compared with proton pump inhibitor-based triple regimens as a first-line eradication option for H. pylori in our population.
authors.affiliation: Department of Gastroenterology, Gulhane Military Medical Academy, Ankara, Turkey.
authors.forename: Ahmet
authors.initials: A
authors.lastname: Uygun
authors.forename: Abdurrahman
authors.initials: A
authors.lastname: Kadayifci
authors.forename: Mukerrem
authors.initials: M
authors.lastname: Safali
authors.forename: Seyfettin
authors.initials: S
authors.lastname: Ilgan
authors.forename: Sait
authors.initials: S
authors.lastname: Bagci
mesh_terms: D053799:2-Pyridinylmethylsulfinylbenzimidazoles / Q000008:administration & dosage / Q000009:adverse effects; D000328:Adult; D000368:Aged; D000658:Amoxicillin / Q000008:administration & dosage / Q000009:adverse effects; D000900:Anti-Bacterial Agents / Q000008:administration & dosage* / Q000009:adverse effects; D000897:Anti-Ulcer Agents / Q000008:administration & dosage* / Q000009:adverse effects; D001729:Bismuth / Q000008:administration & dosage* / Q000009:adverse effects; D001944:Breath Tests; D017291:Clarithromycin / Q000008:administration & dosage / Q000009:adverse effects; D004359:Drug Therapy, Combination; D004415:Dyspepsia / Q000188:drug therapy* / Q000209:etiology / Q000382:microbiology; D005773:Gastroscopy; D016481:Helicobacter Infections / Q000150:complications / Q000188:drug therapy*; D016480:Helicobacter pylori / Q000302:isolation & purification*; D006801:Humans; D064747:Lansoprazole; D008795:Metronidazole / Q000008:administration & dosage / Q000009:adverse effects; D008875:Middle Aged; D016037:Single-Blind Method; D018709:Statistics, Nonparametric; D013752:Tetracycline / Q000008:administration & dosage / Q000009:adverse effects; D016896:Treatment Outcome
chemical_list: D053799:2-Pyridinylmethylsulfinylbenzimidazoles; D000900:Anti-Bacterial Agents; D000897:Anti-Ulcer Agents; D064747:Lansoprazole; D008795:Metronidazole; D000658:Amoxicillin; D013752:Tetracycline; D017291:Clarithromycin; D001729:Bismuth