ObjectiveTo study the clinical effects of using the portable patient-controlled analgesic pump for patients with abdominal operation. Methods Divided 42 patients with abdominal operation into PCA group and B group randomly, there were 21 cases in the each group. The patient-controlled analgesic pump was used in the PCA group to ameliorate the postoperative pain, the dolantin was used in the B group. Compared the effects of the analgesia in the 2 groups. Results There were no significant differences between the 2 group in the blood pressure, heart rate and the respiratory frequence,P
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