(27-03-08) Omega-3 fatty acid supplementation reduces one-year risk of atrial fibrillation in patients hospitalized with myocardial infarction.

Macchia A, Monte S, Pellegrini F, Romero M, Ferrante D, Doval H, D'Ettorre A, Maggioni AP, Tognoni G.
Department of Clinical Pharmacology and Epidemiology, Santa Maria Imbaro, Chieti, Italy, [email protected].

PURPOSE: Current strategies for avoiding atrial fibrillation (AF) are of limited value. We aim to assess the relationship between omega-3 fatty acids (n-3 PUFA) and AF occurrence in post-myocardial infarction (MI) patients. METHODS: A population study, linking hospital discharge records, prescription databases, and vital statistics, was conducted and included all consecutive patients with MI (ICD-9: 410) in six Italian local health authorities over a 3-year period. A propensity score (PS)-based, 5-to-1, greedy 1:1 matching algorithm was used to check consistency of results. Sensitivity analysis was performed to assess the robustness of findings. RESULTS: N-3 PUFA reduced the relative risk of the hospitalization for AF [hazard ratio (HR) 0.19, 95% CI 0.07-0.51] and was associated with a further and complementary reduction in all-cause mortality (HR 0.15, 95% CI 0.05-0.46). PS-based matched analysis and sensitivity analysis confirmed the main results. CONCLUSION: n-3 PUFA reduced both all-cause mortality and incidence of 1-year AF in patients hospitalized with MI.

Source: Eur J Clin Pharmacol. 2008 Feb 29

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