Authors' Note: Atrial fib, also abbreviated to a-fib or AF, is medical jargon for atrial fibrillation. Causes for AF include various heart and lung conditions, particularly valvular heart disease, but half of cases occur spontaneously.
AF may be symptomatic or not, and may be intermittent rather than sustained, particularly in its earlier phase. In any case, it is associated with the formation of clots in the atria of the heart, leading to an increased risk of brain stroke, caused by emboli.
To reduce the risk of stroke, patients with AF may be asked to take blood thinners for life.
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