H. pylori eradication therapy vs. antisecretory non-eradication therapy (with or without long-term maintenance antisecretory therapy) for the prevention of recurrent bleeding from peptic ulcer.

BACKGROUND: Peptic ulcer is the main cause for upper gastrointestinal haemorrhage, and Helicobacter pylori infection is the main etiologic factor for peptic ulcer disease. Maintenance antisecretory therapy has been the standard long-term treatment for patients with bleeding ulcers to prevent recurrent bleeding. On the other hand, the precise efficacy of H. pylori eradication for the prevention of rebleeding from peptic ulcer is unknown.
OBJECTIVES: To compare the efficacy of H. pylori eradication therapy vs. antisecretory non-eradication therapy (with or without long-term maintenance antisecretory therapy) for the prevention of recurrent bleeding from peptic ulcer. SEARCH STRATEGY: We searched the Cochrane Controlled Trials Register (the Cochrane Library issue 4, 2003), MEDLINE (January 1966 to January 2004), EMBASE (January 1988 to January 2004), CINAHL (January 1982 to January 2004), and reference lists of articles. We also conducted a manual search from several congresses. SELECTION CRITERIA: Controlled clinical trials comparing the efficacy of H. pylori eradication therapy vs. antisecretory non-eradication therapy (with or without long-term maintenance antisecretory therapy) for the prevention of recurrent bleeding from peptic ulcer. DATA COLLECTION AND ANALYSIS: Extraction and quality assessment of studies were done by two reviewers. Study authors were contacted for additional information. MAIN
RESULTS: Seven studies with a total of 578 patients were included in the first meta-analysis: mean percentage of rebleeding in H. pylori eradication therapy group was 2.9%, and in the non-eradication therapy group without subsequent long-term maintenance antisecretory therapy it was 20% (OR 0.17, 95% CI 0.10 to 0.32; there was no statistical evidence of heterogeneity; NNT was 7, 95% CI 5 to 11). Three studies with a total of 470 patients were included in the second meta-analysis: mean percentage of rebleeding in H. pylori eradication therapy group was 1.6%, and in non-eradication therapy group with long-term maintenance antisecretory therapy it was 5.6% (OR 0.25, 95% CI 0.08 to 0.76; heterogeneity was not demonstrated; NNT was 20, 95% CI 12 to 100). SUBANALYSIS: Excluding patients taking non-steroidal anti-inflammatory drugs (NSAIDs) at the time of recurrent bleeding resulted in a rebleeding rate of 2.7% (first meta-analysis) or 0.78% (second meta-analysis) in the group receiving H. pylori eradication therapy. When only patients with H. pylori eradication success were included, rebleeding rate was 1.1% in H. pylori eradication therapy group, and NNT decreased from 7 to 6. In some cases, recurrence of H. pylori infection seemed to be responsible for recurrence of bleeding. REVIEWERS'
CONCLUSIONS: Treatment of H. pylori infection is more effective than antisecretory non-eradicating therapy (with or without long-term maintenance antisecretory therapy) in preventing recurrent bleeding from peptic ulcer. Consequently, all patients with peptic ulcer bleeding should be tested for H. pylori infection, and eradication therapy should be prescribed to H. pylori-positive patients.