Pehrsson K, Lentell J, Levander-Lindgren M, Svensson B
Pacing Clin Electrophysiol. 1979 Nov;2(6):560-7. doi: 10.1111/j.1540-8159.1979.tb04274.x.
In order to avoid the potential risk of a short refractory period and the inconvenience of the electronic blocking mechanism at the highest synchronous rate with the conventional atrial triggered pulse generator, two more functions have been added to the normal atrial triggered (VAT) pulse generator. First, it has been designed to be ventricular inhibited; second, a highest synchronous rate detector has been added. When the highest synchronous rate of about 140 is exceeded, the atrial signals are blocked and the frequency of the basic rate generator is increased to about 130. Two patients could hardly feel the change from atrial triggered pacing to ventricular inhibited stimulation, and both were able to work at higher loads with this type of pacing compared with the conventional atrial triggered pulse generator.
为避免传统心房触发式脉冲发生器在最高同步率时出现短不应期的潜在风险以及电子阻断机制带来的不便，普通心房触发式（VAT）脉冲发生器增加了另外两项功能。其一，设计使其具备心室抑制功能；其二，增加了最高同步率检测器。当超过约140次/分钟的最高同步率时，心房信号被阻断，基础心率发生器的频率增加到约130次/分钟。两名患者几乎感觉不到从心房触发起搏到心室抑制刺激的变化，与传统心房触发式脉冲发生器相比，两人在此种起搏方式下均能承受更高负荷的工作。
