extrasystole

名词 extrasystole:

1. a premature systole resulting in a momentary cardiac arrhythmia

ex.tra.sys.to.le

n.Medicine （名词）【医学】
A premature contraction of the heart, resulting in momentary cardiac arrhythmia.
期外收缩：心脏房室的过早心搏，导致短暂的心律不齐