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Effects of Anesthetics on Somatosensory Evoked Potentials (SEPs) in Dogs  

Hong, Yeon-Jung (College of Veterinary Medicine, Seoul National University)
Jeong, Seong-Mok (College of Veterinary Medicine, Seoul National University)
Nam, Tchi-Chou (College of Veterinary Medicine, Seoul National University)
Publication Information
Journal of Veterinary Clinics / v.19, no.3, 2002 , pp. 277-282 More about this Journal
Abstract
This study was designed to evaluate the effects of anesthetics on waveform of SEPs and to authorize possible anesthetic protocol for measurement of the somatosensory evoked potentials (SEPs). Thirteen anesthetic methods were used. The SEPs were recorded on two channels (between the 5th and 6th lumbar vertebra as the channel 1 and between the 11th and 12th thoracic vertebra as the channel 2) following stimulation of posterior tibial nerve. ID analyze SEPs wave, latency and conduction velocity were measured. Among thirteen anesthetic methods, standard SEPs waveforms were observed in dogs anesthetized with following six methods: Acepromazine + Thiepfntal Na + Isoflurane, Acepronazine + Propofol + Isoflurane, Diazepam + Xylazine, Xylazine + Ketamine, Acepromazine + Propofol infusion and Propofol infusion. Above six methods could be used with sufficient anesthetic depth. The differences of latency and conduction velocity among six groups were minimal compared to general waveform of SEPs. These results indicate that the six anesthetic methods can be used for recording SEPs in the dog. In particular, Diazepam + Xylazine and XylaBine + Ketamine as injectable anesthesia are considered more convenient than other four methods in veterinary medicine.
Keywords
dog; somatosensory; evoked potentials; anesthetics;
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