[ Abstract ]Objective: To evaluate the effect of continuous paravertebral analgesia after Method:Chose 60 patients who only did nephrectomy,aged between 30 and 65, and weighed from 45kg to 80kg in both The ASA was I or II The patients were also divided into two groups randomly: The control group (CEA group ) and the continuous paravertebral nerve block group (PVB group ) and each group has 30 Both groups were injected with 250ml 2% ropivacaine continuously, and adopted the intravenous morphine patient-controlled analgesia Their blood was tested, the VAS in still and in movement was evaluated seperatedly after 6/12/24/48 hours of teh nephrectomy, and the accumulated marphine usage and the cases of complication of the patients after 48 hours were Result: Compared with CEA, PVB has significant higher PaO2, has the same VAS in still state with the CEA while different VAS in movement, and the accumulated usage of marphine is Second, the PVB has less patients showing nausea,vomiting,pruritus and In addition, the patients in PVB have short interval (P＜05) for the first Conclusion: Compared with CEA, using PVB for analgesia after the nephrectomy can reduce marphine usage and reduce related Keywords:next thoracic , amides ; pain after surgery ; analgesic我觉得我今天一定是心情大好不然怎么会这么花时间去做这个呢要不要用，你自己看着办吧
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