The Veterinary record
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The Veterinary record · Jun 1996
Clinical TrialSufentanil and nitrous oxide anaesthesia for the recording of transcranial magnetic motor evoked potentials in dogs.
Transcranial magnetic motor evoked potentials were recorded from the extensor carpi radialis muscle of the forelimbs and from the cranial tibial muscle of the hindlimbs of anaesthetised dogs. The dogs were premedicated with droperidol and fentanyl and a light plane of anaesthesia was induced and maintained with sufentanil and nitrous oxide. ⋯ However, the potentials could be recorded reliably in all the dogs and with very good reproducibility. This narcotic anaesthesia also allowed sensory evoked potentials to be recorded reliably.
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The Veterinary record · Jul 1995
A field study of the effect of lameness on mechanical nociceptive thresholds in sheep.
Threshold responses to a mechanical pressure test were measured in two groups of adult female sheep taken from 27 flocks in north Devon. The first group consisted of 470 healthy sheep and the second of 139 sheep suffering from obvious lameness, clinically diagnosed as foot rot. ⋯ In flocks with sheep with a severe degree of lameness, the sheep had a significantly lower threshold to a mechanical nociceptive stimulus than their matched sound controls and their thresholds remained low when tested three months later, after the apparent resolution of the foot rot lesion. In flocks where the lame sheep were less severely affected there was no difference in the threshold responses to a mechanical stimulus between the sound and lame sheep.