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心率减慢时,1:1房室传导突然转变成完全性房室传导阻滞;室性逸搏后,P波如能在适当的时相内抵达,房室传导便可重新恢复,这称为四相阵发性房
Heart rate slowed down, 1: 1 atrioventricular conduction suddenly transformed into a complete atrioventricular block; ventricular escape, P wave, such as arrived in an appropriate time phase, atrioventricular conduction can be restored, this is called For the four-phase paroxysmal room