As an update to previously published recommendations for the management of
Helicobacter pyloriinfection, an evidence-based appraisal of six topics was undertaken in a consensus conference sponsored by the Canadian Helicobacter Study Group. The issues addressed and recommendations made were: bismuth-containing quadruple therapy is appropriate as an alternative first-line eradication strategy for H pyloriinfection; searching for and treating H pyloriinfection is warranted in patients considered to be at high risk for gastric cancer; H pyloriinfection should be eradicated before initiating long-term treatment with nonsteroidal anti-inflammatory drugs or acetylsalicylic acid; the stool antigen test has a limited role in the diagnosis of H pyloriinfection; the benefits of H pylorieradication in patients on long-term proton pump inhibitor therapy are not sufficient to warrant recommending a strategy of searching for and eradicating the infection among these patients; and a strategy of 'test and eradicate' for H pyloriinfection in patients with uninvestigated dyspepsia is cost-effective in Canada relative to a trial of proton pump inhibitor therapy. The goal was to establish guidelines on the best evidence using the same structure to address and formulate recommendations for each issue. The degree of consensus for each issue is presented.