Articles: analgesia.
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The aim of this study was to assess the efficacy of epidural morphine plus bupivacaine for post-operative pain control following Harrington rod insertion. In 22 scoliotic patients, studied prospectively, the epidural catheter was positioned under direct vision, intra-operatively before wound closure. Post-operatively, the patients received 2 mg morphine in 4 ml of 0.25% bupivacaine through the epidural catheter whenever they complained of pain. ⋯ The mean (+/- SD) pre-injection pain score decreased from 2.5 +/- 0.15 on the first post-operative day to 0.7 +/- 0.2 by the fourth day. The side-effects, including nausea, vomiting and pruritus, were minimal. It is concluded that morphine, in 0.25% bupivacaine administered through an intra-operatively placed epidural catheter, provides a safe and effective post-operative analgesia in patients undergoing Harrington rod insertion for idiopathic scoliosis.
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Randomized Controlled Trial Comparative Study Clinical Trial
Epidural infusion of alfentanil or diamorphine with bupivacaine in labour--a dose finding study.
Following induction of epidural analgesia with 0.375% bupivacaine, 120 healthy parturients were randomly assigned in a double blind fashion to one of eight infusion groups. All received 8 ml.h-1 of 0.125% bupivacaine either alone (control group), or with alfentanil at 133, 266 or 400 micrograms.h-1 (groups A1-A3) or with diamorphine at 133, 266, 400 or 533 micrograms.h-1 (groups D1-D4). Significantly longer top-up intervals were achieved with the two highest doses of both alfentanil and diamorphine when compared with bupivacaine alone (p < 0.01), making the minimum effective doses 266 micrograms.h-1 of alfentanil and 400 micrograms.h-1 of diamorphine. ⋯ The incidence of pruritus did not differ between groups. The highest dose of diamorphine caused significantly more nausea. No significant neonatal side-effects were demonstrated.