At present ,the His signal is detected universally by double polarity conduit at home and the method has traumatic and dangerous peculiarity and can not detect the dynamic variation repetitively.

• 目前，国内普遍采用双极导管在心脏内检测的方法，该方法属创伤检测，有一定的危险性，并且不能反复测量动态变化。