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atrial fibrillation

[ey-tree-uhl fib-ruh-ley-shuhn]

noun

Pathology.
  1. a cardiac arrhythmia, or irregular heartbeat, caused by rapid, chaotic electrical impulses to the atria. AF, AFib.



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Word History and Origins

Origin of atrial fibrillation1

First recorded in 1905–10

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atriaatrial natriuretic factor