Objective To observe the effect of blood pressure reduction induced with high epidural anesthesia and general anesthesia in patent ductus arteriosus (PDA) ligation operation.

• 摘要目的观察高位硬膜外麻醉和全麻异氟烷吸入在婴幼儿动脉导管未闭(PDA)手术降压中的临床应用。