Evaluating postoperative analgesia in abdominal floor with spinal morphine injection method under 2 previous injections and injections after surgery, 60 patients were divided into 2 groups: Group T: Spinal morphine injection immediately before surgery. Group S: Parenteral morphine after spinal surgery. The results are as follows: - Duration of analgesic effect of group was 8.07 + or - 3.75 before injection lasted later than the injection group was 5.76 + or - 0.96 hours. - The amount of morphine used previous group titration of 3.27 + or - 3.30 is lower than the latter group was 7.29 + or - 3.38 mg. - The amount of morphine consumption after 12 h and 24 h before injection group was 4.66 + or - 2.24 and 9.12 + or - 3.21 mg mg lower than after injection group was 6.67 + or - 2.03 mg and 12.76 + or - 2.96 mg.
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