Abstract
There are suggestions of effects of marine omega-3 polyunsaturated fatty acids (PUFAs) in relation to ventricular arrhythmia and sudden cardiac death and, more recently, also of possible effects related to atrial fibrillation. On the basis of the recently published human studies, this article not only focusses primarily on recent developments and current knowledge on the effect of marine omega-3 PUFAs on atrial fibrillation, but also provides a status for their effects on ventricular arrhythmias. Marine omega-3 PUFAs may protect against ventricular arrhythmias, and there is growing evidence for an effect of marine omega-3 PUFAs in the prevention and treatment of atrial fibrillation. Further studies are needed to establish which patients are more likely to benefit from omega-3 PUFAs, the timing of treatment, and the dosages.
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