Blanc J J, Germa D, Lamotte A, Penther P
Arch Mal Coeur Vaiss. 1978 Oct;71(10):1166-9.
It is rare to find 2:1 second degree block in paroxysmal junctional tachycardia. In the case described, atrial stimulation at 200/mn during supra-ventricular tachycardia triggered off simultaneous atrio-ventricular and ventriculo-atrial block. This unusual occurrence was very useful because it localised the re-entry circuit to the junctional region by excluding possible accessory pathways.
在阵发性交界性心动过速中很少见到2:1二度房室传导阻滞。在所描述的病例中，室上性心动过速时以每分钟200次的频率进行心房刺激引发了同时存在的房室传导阻滞和室房传导阻滞。这种不寻常的情况非常有用，因为它通过排除可能的附加通路将折返环定位在了交界区。
