Automated external defibrillator AED O Ventricular fibrillation may be used by 200J*3 times 0r200J200300J、300J OIf polymorphic ventricular tac hycardia can not be er distinguished from ventricular fibrillation pearl treatment would refer to be as VE B Atrial fibrillation 100-200J synchronized 4 Atrial flutter or supraventricular tachycardia 50-100J synchronized 6 Ventricular tachycardia 100J synchronizedAutomated external defibrillator --- AED ① Ventricular fibrillation : may be used by 200J*3 times) or 200J、200-300J、300J ② If polymorphic ventricular tachycardia can not be clearly distinguished from ventricular fibrillation (VF), treatment would refer to be as VF ③ Atrial fibrillation :100-200J synchronized ④ Atrial flutter or supraventricular tachycardia 50- 100J synchronized ⑤ Ventricular tachycardia 100J synchronized