Second Degree Block During Reciprocal Atrioventricular Nodal Tachycardia
Second Degree Block During Reciprocal Atrioventricular Nodal Tachycardia
复制标题
房室结性心动过速期间的二度传导阻滞
DOI：
10.1161/01.cir.53.4.595
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发表时间：
1976
期刊：
影响因子：
37.8
通讯作者：
K. Lie
中科院分区：
文献类型：
--
作者：
H. Wellens;J. Wesdorp;Donald R. Doren;K. Lie
通过对心脏进行程序性电刺激连续研究了 67 名患有相互房室 (A-V) 结性心动过速的患者，其中 9 名患者在心动过速期间表现出向心室的二度传导阻滞，一名患者在心动过速期间表现出向心房的二度传导阻滞。在四名患者中，传导阻滞的发生与过早启动心动过速的测试刺激密切相关。三名患者在心动过速发生率增加后出现传导阻滞。在两名患者中，心动过速期间引入室性早搏刺激可引起传导阻滞。我们的观察表明，不同的机制可能导致相互室上性心动过速期间的二度传导阻滞。在相互室上性心动过速期间发现二度传导阻滞排除了 A-V 结 - His 通路上的 A-V 传导和辅助 A-V 通路上的 V-A 传导的心动过速。
Of 67 patients with reciprocal atrioventricular (A-V) nodal tachycardia consecutively studied by programmed electrical stimulation of the heart, nine patients showed second degree block toward the ventricle and one patient toward the atrium during tachycardia. In four patients the occurrence of block was critically related to the prematurity of the test stimulus initiating the tachycardia. In three patients block developed following increase in rate of tachycardia. In two patients block could be elicited by introducing premature ventricular stimuli during tachycardia. Our observations indicate that different mechanisms may be responsible for second degree block during reciprocal supraventricular tachycardia. The finding of second degree block during reciprocal supraventricular tachycardia excludes a tachycardia with A-V conduction over the A-V node - His pathway and V-A conduction over an accessory A-V pathway.