Sasaki R, Tani H, Sugisawa K, Iwasaki T
First Department of Medicine, Hyogo College of Medicine.
Nihon Rinsho. 1995 Feb;53(2):360-6.
We investigated whether sinoatrial conduction can be evaluated by the initial potential (IP) on the P wave signal-averaged electrocardiogram (PSAE). We studied 61 patients who underwent electrophysiologic study. Programmed stimulation was performed to obtain the sinoatrial conduction time (SACT) and the maximal sinus node recovery time (SRTmax). The root mean square voltages for the initial 10 and 20 msec of the filtered P waves (IP10 and IP20) were calculated based on PSAE. The association between IP10 and IP20 with SACT or SRTmax was analyzed by linear regression analysis. The reduction of IP10 or IP20 was negatively correlated with the prolongation of SACT, but was not correlated with the prolongation of SRTmax. Our findings showed that IP on the PSAE can be used to estimate the status of sinoatrial conduction.
我们研究了是否可以通过P波信号平均心电图（PSAE）上的初始电位（IP）来评估窦房传导。我们研究了61例接受电生理研究的患者。进行程控刺激以获得窦房传导时间（SACT）和最大窦房结恢复时间（SRTmax）。基于PSAE计算滤波后P波最初10毫秒和20毫秒的均方根电压（IP10和IP20）。通过线性回归分析分析IP10和IP20与SACT或SRTmax之间的关联。IP10或IP20的降低与SACT的延长呈负相关，但与SRTmax的延长无关。我们的研究结果表明，PSAE上的IP可用于估计窦房传导状态。
