This reduces the heart's excitability and suppresses reentrant tachycardia.

这降低心脏的兴奋性和抑制折返性快速性心律失常。

Hence the use of these drugs for treating reentrant tachycardia x'.

因此这些药物可用于治疗折返性心动过速。

This type where it goes up from ventricle to atrium, is called Atrioventricular reentrant tachycardia (or AVRT) with orthodromic conduction, and can lead to very high ventricular rates, between 200 and 300 bpm.

这种电冲动从心室传导到心房的类型，称为顺向传导的房室折返性心动过速（AVRT）；它可以导致很快的心室率，达到每分钟200-300次。