脑卒中患者有25%~30%病因不明,研究认为其中部分是由于隐匿性的心房颤动(房颤)引起。近年来的研究显示频发房性期前收缩能增加房颤发生的风险,也有研究报道其与脑卒中存在相关性,但认为脑卒中是继发于房颤而发生的。目前尚不清楚频发房性期前收缩和脑卒中的风险以及在发生脑卒中 Stroke patients 25% to 30% of the etiology, the study concluded that part of it is due to occult atrial fibrillation (AF) caused. In recent years, studies have shown that the occurrence of atrial premature contraction can increase the risk of atrial fibrillation, there are studies reported its correlation with stroke, but that stroke is secondary to atrial fibrillation occurred. It is not clear at this time that the risk of premature systolic and stroke is high and in the event of a stroke