一、S径与F径传导有何特点,应怎样选择消融? 答:单向传导并不是异常现象,很多人AP只能单向传导,并不能逆向传导。没有心动过速者,大约50％的人正道具有逆向传导功能。逆向传导从His束→结希区→浅表束的结房组织→心房,称为逆向快道。正向快道是由一大片传导组织构成,而逆向快道是由一小片传导组织构成。因此,要选择性消融正向快道除要消融大片传导组织外,还要消融由左房深部延伸来的那块组织,是很困难的。我在大量的临床实践中,阻断F径(不管是前传还是逆传)仅有3 First, what are the characteristics of S and F diameter conduction, how to choose ablation? A: Unidirectional conduction is not an anomalous phenomenon, many AP can only be one-way conduction, and can not reverse conduction. Without tachycardia, about 50% of people have reverse conduction function. Reverse conduction from the bundle of His → junction → superficial bundle of superficial organization of the atria, known as the reverse fast track. The forward track is made up of a large tract of conductive tissue, whereas the reverse track is made of a small piece of conductive tissue. Therefore, to selectively ablate forward fast in addition to ablating large tracts of tissue, but also to ablate the deep left extending from the left part of the organization, it is very difficult. In a large number of clinical practice, I block only the F-path (whether it is an antecedent or an antecedent) with only three