?????

??????N???????????????pre-excitation syndromWPWWolf-Parkinson-White?????????????
[?]
????????????????? ??????N????????????????QRS?????N???????????????????NQRS?????? ???????????????????QRS???N????QRS????????N????????N??????N?????QRS????????? ??????????????????????????? ????????Kent????????James?????????????Mahaim????????????
[?]??
???????????200/min???????????300/min????????????
[?]?
????????QRS?????0.08???????QRS??0.12??????mapping?????????? ??????????PR????????????????PR?QRS????????PR?????? ??...