The number of patients with accessory pathway (AVRT) and AV nodal reentrant tachycardia (AVNRT) were 8344 and 4822 respectively.

• 各类心律失常中房室折返性心动过速(AVRT)为8344例(57 。2%25 ),房室结折返性心动过速(AVNRT) 4822例(33%25 )。