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- Title
Evaluation of the analgesic effect of lidocaine and bupivacaine used to provide a brachial plexus block for forelimb surgery in 10 dogs.
- Authors
Wenger, S.; Moens, Y.; Jäggin, N.; Schatzmann, U.
- Abstract
Twenty adult dogs weighing between 1.4 and 53.5 kg and aged between six months and nine years were anaesthetised and the brachial plexus was localised with the aid of a nerve stimulator. In 10 of the dogs a brachial plexus block was induced with a mixture of lidocaine and bupivacaine and the other 10 each received 0-25 ml/kg saline as a control. The end-tidal isoflurone concentration was maintained between 1.3 and 1.4 per cent during surgery for carpal arthrodesis or a fracture of the radius or ulna. Acute heart rate or blood pressure increases of 20 per cent or more were treated with 1 μg/kg fentanyl intravenously. Postoperatively, signs of pain were scored by a single blinded observer at hourly intervals until eight hours after the block had been induced, on a scale from 0 to 18. Dogs with pain scores above 5 received 0.1 to 0.2 mg/kg methadone intravenously, repeated as necessary. During surgery the control dogs received significantly more fentanyl (median 0.05 μg/kg/minute, range 0.02 to 0.20 μg/kg/minute) than the group given local anaesthetic (median 0 μg/kg/minute, range 0 to 0.02 μg/kg/minute). Postoperatively, the control group required significantly more methadone (median 0.2 mg/kg, range 0.1 to 1 mg/kg) than the treated group (median 0 mg/kg, range 0 to 0.13 mg/kg).
- Subjects
CLINICAL drug trials; LIDOCAINE; DOGS; BRACHIAL plexus diseases; EXTREMITIES (Anatomy) -- Surgery; FORELIMB; VETERINARY medicine
- Publication
Veterinary Record: Journal of the British Veterinary Association, 2005, Vol 156, Issue 20, p639
- ISSN
0042-4900
- Publication type
Article
- DOI
10.1136/vr.156.20.639