The secondary poststimulative phase after rapid atrial pacing: its importance in the diagnosis of sinus node dysfunction.

L Szatmáry, G Veress, J Borbola, A Elkafarna, A Zorándy, M Czapko
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Abstract

The effect of atropine and the beta-blocker Tobanum was studied on intrinsic heart rate (IHR) and on rapid atrial pacing carried out before and after administration of the drugs. The primary and secondary postpacing parameters were examined in both circumstances. In patients with normal IHR, return to the basic heart frequency after the drugs showed an exponential characteristic while in patients with abnormal IHR, the cycles of PPC 2-10 have lost this characteristic feature. The latter was a more characteristic electrophysiological sign of sinus node dysfunction than the recovery time of the sinus node. In patients with abnormal IHR, maximum CPPC1 is sometimes normal.

快速心房起搏后继发性刺激期:在窦房结功能障碍诊断中的重要性。
研究了阿托品和β受体阻滞剂托巴纳姆在给药前后对内在心率(IHR)和快速心房起搏的影响。检查了两种情况下的主要和次要后起搏参数。在IHR正常的患者中,药物作用后心脏基本频率恢复呈指数特征,而在IHR异常的患者中,PPC 2-10周期失去了这一特征。后者是比窦结恢复时间更特征性的窦结功能障碍电生理征象。在IHR异常患者中,CPPC1最大值有时是正常的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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