This normal variation in rhythm is known as sinus arrhythmia. 節律的這種正常變化稱(chēng)為竇性心律失常。
AF is a common supraventricular arrhythmia that is characterized by chaotic and uncoordinated contraction of the atrium. 房顫是一種以心房混亂不協(xié)調的收縮為特征的常見(jiàn)的室上性心律失常。