Objective to determine the minimum effective concentration of ropivacaine in thoracic epidural analgesia after surgical incision into the chest wall.
目的探讨开胸手术后罗哌卡因胸段硬膜外镇痛的最低有效浓度。
Objective to determine the minimum effective concentration of ropivacaine in thoracic epidural analgesia after surgical incision into the chest wall.
目的探讨开胸手术后罗哌卡因胸段硬膜外镇痛的最低有效浓度。
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