The Efficacy of Serum Pepsinogen for Prediction of Metachronous Gastric Neoplasm

The regimen of H. pylori eradication was like that: 1-week conventional proton pump inhibitor (PPI) based triple therapy (lansoprazole 40 mg b.i.d., clarithromycin 500 mg b.i.d., and amoxicillin 1 g b.i.d. for a week) after confirmation of H. pylori infection. If the participants who initially failed to respond to the first eradication, they recommended to underwent second-line eradication therapy with the regimen of 7-day bismuth containing quadruple regimen \[lansoprazole 40 mg b.i.d., tripotassium dicitrate bismuthate (Denol; Greencross Co., Seoul, Korea) 300 mg q.i.d. (three tablets 30 min before meals and one tablet 2 hours after dinner), metronidazole 500 mg t.i.d., and tetracycline 500 mg q.i.d. for 1 week\]