Both groups were assisted midazolam for sedation.Recording the BP, HR, SpO2 and RR.Recording the quantity of intravenous anesthetics, awaking time and side effects.

• 记录患儿血压、心率、脉搏血氧饱和度、呼吸频率，记录使用静脉药的剂量，苏醒时间及不良反应。