Factors associated with the development of reflux esophagitis after Helicobacter pylori eradication.

We investigated whether Helicobacter pylori (HP) eradication increases the incidence of reflux esophagitis (RE) in patients with peptic ulcers. From 2001-2005 consecutive out patients with peptic ulcers and HP received eradication and were followed endoscopically. HP was cured in 119 and RE developed in 33 of the 153 patients. RE developed in 24 of the 119 HP-eradicated patients and 9 of the 34 HP-persistent patients. The estimated RE occurrence rate within 1 year was higher in the HP-eradicated patients than in the HP-persistent patients, but it was reversed at 2 years by the Kaplan-Meier analysis. In 76 patients follow up for > or = 18 months, hiatal hernia, duodenal ulcer, and eradication failure were significantly associated with the increased RE rate by univariate and multivariate analysis. The follow-up period after HP eradication affected the RE occurrence rate, and eradication failure significantly increased the RE development in patients followed up for > or = 18 months.