Atrial Fibrillation Definition
noun
Fibrillation in which the normal rhythmical contractions of the cardiac atria are replaced by rapid irregular twitchings of the muscular wall that cause the ventricles to respond irregularly.
American Heritage Medicine
A cardiac arrhythmia (abnormal heart rhythm) that involves the two upper chambers (atria) of the heart.
Wiktionary
Other Word Forms of Atrial Fibrillation
Noun
Singular:
atrial fibrillationPlural:
atrial-fibrillationsAtrial Fibrillation Is Also Mentioned In
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