代表心房除极和复极化过程的心电向量图 P 环和 Ta 向量以往研究甚少,主要是由于图形太小,难以分析。随着仪器的改进,现在可用高增益放大来研究心房除极和复极化过程,已逐渐成为临床心血管病诊断的重要手段之一。熟悉正常 P 环和 Ta 向量特点是进一步识别病理变化的基础。用 Frank 导联连接法描记正常成人 P 环的研究,国内外均有 ECG on behalf of the atrial depolarization and repolarization process vector P ring and Ta vector little research in the past, mainly due to the graphics is too small, difficult to analyze. With the improvement of the instrument, high-gain amplification can now be used to study the process of atrial depolarization and repolarization, which has gradually become one of the important means of diagnosis of clinical cardiovascular disease. Familiar with the normal P-ring and Ta vector features is the basis for further identification of pathological changes. Using the Frank lead connection method to describe the study of normal adult P-ring, both at home and abroad