狗心脏窦结活动的电征。

F Solti, A Juhász-Nagy, E Czakó
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引用次数: 0

摘要

对22只犬进行了窦结电活动局部记录的可行性研究。在窦房结附近放置一个小的单极电极,并施加2-4倍的电放大,可以在P波前20-40 ms记录到一个早期的、缓慢的、低振幅的波。当电极移离窦房结时,早期波逐渐减弱,最终融合为局部P波。窦结动脉内注射腺苷暂时停止窦结活动,窦结区苯酚浸润电刺激迷走神经使局部P波消失。同样,如果窦房结是电驱动的,在P波出现之前也没有早期的作用。在窦房结附近记录的早期波代表窦房结去极化,适合结合耳窦传导研究窦房结起搏器活动。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Electric sign of the activity of the sinus node in the dog heart.

The possibility of local recording of the electrical activity of the sinus node was investigated on 22 dogs. Using a small unipolar electrode positioned at the proximity of the sinus node and applying a 2-4-fold electric amplification, an early, slow and low-amplitude wave could be recorded 20-40 ms before the P wave. This early wave gradually decreased when the electrode was moved away from the sinus node and finally fused into the local P wave. Temporary arrest of sinus node activity by injection of adenosine into the sinus node artery, electrical stimulation of the vagal nerve by infiltration with phenol of the sinus node region made the local P wave to disappear. Similarly, no early action before the P wave could be seen if the sinus node was driven electrically. The early wave recorded in the proximity of the sinus node represents the depolarization of the sinus node, and it is suitable to study the pacemaker activity of the sinus node together with sinoauricular conduction.

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