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碎裂QRS波(图1)定义为[1]:相邻的两个或以上导联存在多相的QRS波
包括>1个R波或R、S波存在多个顿挫或切迹
S波切迹多发生在S波底部
经典的f-QRS波的心电图特征还包括:1QRS时限<120ms;2伴或不伴有Q波
Q波可能存在单个或多个切迹或顿挫
可形成Qr或QR型QRS波;3除外完全性或不完全行束支传导阻滞;这种f-QRS波常出现在冠状
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