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Helicobacter pylori seropositivity in subjects with acute myocardial infarction.
  1. B. Rathbone,
  2. D. Martin,
  3. J. Stephens,
  4. J. R. Thompson,
  5. N. J. Samani
  1. Department of Gastroenterology, Leicester Royal Infirmary, UK.


    OBJECTIVE: To determine whether Helicobacter pylori infection increases the risk of myocardial infarction. DESIGN: Case-control study. SETTING: University teaching hospital. METHODS: Serological evidence of H pylori infection was determined in 342 consecutive patients with acute myocardial infarction admitted into the coronary care unit and in 236 population-based controls recruited from visitors to patients on medical and surgical wards. RESULTS: 206/342 (60.2%) of cases were H pylori positive compared with 132/236 (55.9%) of controls (P = 0.30). Age and sex stratified odds ratio for myocardial infarction associated with H pylori seropositivity was 1.05 (95% CI 0.7 to 1.53, P = 0.87) and this remained non-significant (P = 0.46) when other risk factors for ischaemic heart disease were taken into account using logistic regression analysis. H pylori seropositivity was not associated with several coronary risk factors in either cases or controls. CONCLUSION: No increase was found in H pylori seropositivity in subjects with acute myocardial infarction. This suggests that previous H pylori infection is not a major risk factor for acute myocardial infarction.

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