与AAI起搏器一样,VVI起搏器的心室感知系统的感知不应期也从心室起搏脉冲发放后,或有效感知心室自身心电信号为起点,触发进入心室感知系统的不应期(VRP)。落入此期的心室自身电信号将不被感知,而落入此期之外的自身心室除极信号将被有效感知,并重整起搏器的基础起搏间期。近年来设计与生产的VVI起搏器中,又将心室感知不应期(VRP)进一步分成两个亚期,一 As with the AAI pacemaker, the perceptual refractory period of the ventricular sensing system of a VVI pacemaker also triggers the refractory period of entry into the ventricular sensing system (ie, starting from the ventricular pacing pulse, or effectively sensing the ventricular self-ECG signal VRP). The electrical signals of the ventricle that fall into this period will not be sensed, and the ventricular destatic signals falling outside this period will be effectively sensed and the pacemaker interval will be resumed. In recent years, the VVI pacemaker designed and manufactured has further divided the ventricular perceptual refractory period (VRP) into two sub-phases: one