近年来,国内外有关窦房结电图(简称SNE)报道日增。在经静脉心内导管法记录SNE的基础上,国内已发展到用食道电极法,甚至体表C导联通过普通前置放大的方法记录到SNE,据报告重复性和可靠性均属理想。假如这些实验无误,用无创伤性方法记录“P前波”确是一项有意义的工作。1986年4月起我院参照文献报道的方法试图进一步证实食道电极法记录SNE的可靠性,并用以指导临床诊断。然而实验结果却未能获得真正的P前波,反而发现了不少伪 In recent years, domestic and international reports about the increase of sinoatrial node (SNE) reported. On the basis of recording the SNE by intravenous intracardiac catheterization, SNE has been developed in China with esophageal electrode method and even surface C lead by normal preamplification. It is reported that the repeatability and reliability are ideal. If these experiments were correct, recording “P anterior waves” with a noninvasive approach was indeed a meaningful exercise. In April 1986, our hospital tried to confirm the reliability of SNE by esophageal electrode method and used it to guide the clinical diagnosis. However, the experimental results failed to obtain a real P wave, but found a lot of pseudo