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用强烈刺激狗右颈迷走神经外周断端的方法可以造成急性、完全性、暂时性房室传导阻滞动物模型。在此背景上观察到使狗血压保持在接近原血压水平的适宜起搏频率为170次/分左右。在同一动物上还观察到起搏频率高于170次/分的竞争性起搏,造成室性心动过速,可使血压显著降低到心源性休克的水平。
Acute, complete and temporary atrioventricular block can be induced by the method of strongly stimulating the peripheral segment of the right vagus nerve of dogs. On this background, it is observed that a suitable pacing frequency for keeping dog blood pressure close to the original blood pressure level is about 170 beats / min. In the same animal, competitive pacing of more than 170 beats per minute was also observed, causing ventricular tachyarrhythmias that significantly reduced blood pressure to cardiogenic shock.