Supraventricular tachycardia Also termed atrial tachycardia,this is a normal morphology mC:5 fClEdvi】 n.生物形tachycardia which is not driven by the SA node.The patient may feel dizzy,attack can last 小 for a few beats or for many hoursSupraventricular tachycardia Also termed atrial tachycardia, this is a normal morphology 【mC:5fClEdVi】 n.生物形tachycardia which is not driven by the SA node.The patient may feel dizzy,attack can last for a few beats or for many hours