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Canadian Journal of Anesthesia, Vol 35, 249-254, Copyright © 1988 by Canadian Anesthesiologists' Society
ARTICLES |
DR Gambling, P Yu, C Cole, GH McMorland and L Palmer
Department of Anaesthesia, University of British Columbia, Vancouver.
In a randomised, single-blinded, placebo-controlled study, 27 parturients in labour receiving epidural 0.125 per cent bupivacaine, were assessed to evaluate the efficacy of patient-controlled epidural analgesia (PCEA) compared with continuous infusion epidural analgesia (CIEA). Group A (n = 14) received a background infusion of 4 ml.hr-1 0.125 per cent bupivacaine, with further 4 ml aliquots, self-administered, as required (up to 16 ml.hr-1). Group B (n = 11) received a continuous infusion of 12 ml.hr-1 through the same PCA apparatus, but with the demand-button deactivated. Both groups were similar in respect to age, height, weight, duration and outcome of labour, birthweight and neonatal Apgar scores. Patients in Group A (PCEA) received significantly less local anaesthetic than those in Group B (11.2 vs 15.2 mg.hr-1). Pain relief was similar in both groups. Patients expressed overall satisfaction with PCEA, appreciating control over their own pain relief and less reliance on medical staff. PCEA is a safe, effective means of providing optimal analgesia during labour, with minimal local anaesthetic requirement.
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