atrial extrasystole

n.

A premature contraction of the heart arising from an ectopic atrial focus.

Words nearby atrial extrasystole

atrial auricle, atrial chaotic tachycardia, atrial complex, atrial conduction, atrial dissociation, atrial extrasystole, atrial fibrillation, atrial flutter, atrial fusion beat, atrial natriuretic factor, atrial septal defect