British Journal of Anaesthesia, Vol 76, Issue 2 209-213, Copyright © 1996 by The Board of Management and Trustees of the British Journal of Anaesthesia
A. Espinet, D. J. Henderson, K. A. Faccenda and LMM. Morrison
In a double-blind, randomized study, we investigated 40 patients undergoing
abdominal hysterectomy; patients received 0.5% plain bupivacaine 20 ml via
a low thoracic extradural catheter and a diclofenac suppository (100 mg),
either 30 min before incision (group 1) or 30 min after incision (group 2).
All patients received a standard general anaesthetic and no opioid was used
before or during operation. Postoperative analgesic requirements were
measured using a patient- controlled analgesia (PCA) system. Pain was
assessed using a visual analogue scale (VAS) and a verbal pain score (VPS)
on movement up to 48 h after operation. There was no significant difference
in the time to first request for morphine but consumption of morphine was
significantly greater in group 1 at all times except 24 h. There were no
significant differences in VAS and VPS pain scores, although both scores
were consistently higher in group 1. Patient satisfaction with the quality
of analgesia, at 24 h, demonstrated no significant difference between the
two groups. The combination of extradural block and diclofenac suppository
given before operation did not appear to produce a clinically effective
pre-emptive analgesic effect.
CLINICAL INVESTIGATIONS
Does pre-incisional thoracic extradural block combined with diclofenac reduce postoperative pain after abdominal hysterectomy?
Department of Anaesthetics, St John's Hospital at Howden, Howden Road West, Livingston EH54 6PP
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