1. Objective:To evaluate the effects of the anesthesia method used during the operation of Patent ductus arteriosis(PDA)through cardic catheter without thoracotomy.
   目的:评价小儿经皮心导管动脉导管封堵术的麻醉方法及效果。
2. Abstract： Objective:To evaluate the effects of the anesthesia method used during the operation of Patent ductus arteriosis(PDA)through cardic catheter without thoracotomy.
   摘 要： 目的：评价小儿经皮心导管动脉导管封堵术的麻醉方法及效果。

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