布比卡因、左旋布比卡因和罗哌卡因在下腹部手术中硬膜外阻滞效果比较
포비잡인、좌선포비잡인화라고잡인재하복부수술중경막외조체효과비교
The anesthetic effects reactions of epidural bupivacaine,levobupivacaine and ropivacaine for underbelly surgery