随着药物学迅速发展及心外膜标测的临床应用,对预激症候群内、外科治疗起到了推进作用。而电生理研究对理解预激症群某些特殊类型的临床表现奠定了基础。但间位性预激的临床表现与心电图表现具有特殊性而心电图表现与室性早搏的鉴别,国外也认为存在着一定困难,并且 With the rapid development of pharmacology and the clinical application of epicardial mapping, the pre-shock syndrome within the surgical treatment has played a catalytic role. The electrophysiological study to understand the pre-shock group of some special types of clinical manifestations of the foundation. However, the clinical manifestations of intermittent pre-excitation and ECG performance is specific and the performance of ECG and ventricular premature be identified, foreign also think there are some difficulties, and