Objective:To investigate whether monitored anesthetical care（MAC） is better than traditional regional anesthesia in mammary augmentation surgery.Methods:Thirty two patients

American Society Anesthesia （ASA） Ⅰ～Ⅱ

undergoing mammary augmentation surgery were randomly divided into two groups

either MAC or control.MAC group was administered with Fentanyl and Propofol plus regional anesthesia.Control group was administered with traditional regional anesthesia only.Results:The efficacy of anesthetization in MAC group was better than that in control group（P

<

0.01）.There were no significant difference in mean artery pressure （MAP） and heart rate （HR） between the MAC and control group

but MAP and HR were significantly higher in control group compare the base rate of pre-operation with during the operation and post operation（P

<

0.05）.The rate of breath and percentage of saturation pulse oxygen（SpO

2

） showed no significant differences between two groups.The rate of toxic reaction of local anesthetics was lower in MAC group than that of control group（P

<

0.01）.The patients were assessed for the length of time from the end of operation to the discharge from hospital

（PAOSS Score≥9

time≤120 min）.The results showed no significant difference.Conclusion:MAC is better than traditional regional anesthesia.