1930年,Wolff、parkinson 及 White 三氏描述了一组心电图改变,主要特点是:(1)P—R 间期缩短在0.12秒以内;(2)QRS 间期延长至0.11秒以上,QRS 波群起始部有一明显粗钝、模糊、切迹的波,称为预激波(delta 波);(3)常易发生阵发性室上性心动过速。因此,以往简称为 W、P、W 综合征。近年来认为这组心电图表现是由于房室间存在着异常的、不同类型的附加传导束,使窦房结发出的激动, In 1930, Wolff, Parkinson and White describe a group of ECG changes, the main features are: (1) P-R shortening within 0.12 seconds; (2) QRS interval extended to 0.11 seconds or more, QRS complex The beginning of a clear blunt, fuzzy, notch the wave, known as the pre-shock (delta wave); (3) Often prone to paroxysmal supraventricular tachycardia. Therefore, the past referred to as W, P, W syndrome. In recent years that this group of ECG performance is due to the presence of an abnormal room, different types of additional conductive bundles, the sinus node issued by the excitement,