Continuous Lumbar Epidural and Caudal Anesthesia with small dose of morphine for lumbar laminectomy and the Effect of Postanesnesthetic Pain Relief / 대한마취과학회지

From September 1979 through April 1980, we had carried out continuous lumbar epidural anesthesia(2% lidocaine, 20ml) with small dose of morphine and single dose caudal anesthesia(2% lidocaine, 15-20ml) for 16 cases of lumbar laminectomy,And also we observed the effects of postanesthetic pain relief by administered morphine(2mg) into lumbar epidural space, The results of this study were as follows: 1) Age distribution was from 20 to 60 years, sex distribution was 14 in man and 2 in woman, and physical status was in ASA class I in all cases. 2) The site of herniated intervertebral disc was L4~5 in 15 cases and L3~4 in one, The epidural puncture site was selected 2~3 vertebral segments cephalad from the lesion, 3) The morphine amount administered with lidocaine into lumbar epidural space was 2mg in all cases. 4) The duration of pain relief from the induction of anesthesia was average 17. 5 hours, and from the additional epidural injection of morphine(2mg) in ward was average 13.5 hours. 5) There was no neurological deficit or sequele except nausea in one case postoperatively. Therefore this anesthetic method was not only satisfactory for laminectomy but also safer and simpler in the fixation of spinal anesthetic level by patient's position change than spinal anesthesia, and faster in the postanesthetic ambulation than general anesthesia. Moreover, surgeon's acceptability.

Clinical Study of Postoperative Pain Relief after Regional Anesthesia with a Small Dose of Morphine / 대한마취과학회지

In an attempt to relieve postoperative pain after lumbar epidural anesthesia, a small dose of morphine with lidocaine was administered into the lumbar epidural space. It is suggested that the morphine reaehed the subarachnoidal space and produced its effect by direct action on the specific opiate receptors in the substantia gelatinosa of the posterior horn of the spinal cord. Epidural anesthesia was done in l25 cases from June 1979 through March 1980. These cases were divided into two groups (Control group and Morphine group). The Control group was 46 cases which were injected with 2% lidocaine, and the Morphine group was 79 cases which west injected with 2% lidocaine and morphine (3. 5~6. 5mg). 0.1% epinephrine 0.1mL was mixed to each 10ml of 2% lidocaine in all of both groups, The results of this study were as follows: 1) The cases complaining pain within 12 hours after epidural anesthesia were 36/46(78.2 %) in the Control group and 11/79(13.9%) in the Morphine group. 2) A variable single dose of morphine did not affect the duration of postoperative pain relief. 3) The time of recovery of spontaneous voiding was similar in Control and Morphine groups. Within 24 hours, spontaneous voiding was recovered in 34/46(73,9%) of the Control group and in 64/79(81.0%) of the Morphine group. 4) Blood pressure changed a little within 30 minutes after epidural anesthesia in both groups(56.5% in the Control group and 54.4% in the Morphine group). 5) Complications were similar in both groups except for nausea and vomiting, which occurred more in the Morphine group(8.9% & 7. 6) than in the control group (4.4% & none).