Poncelet L, Michaux C, Balligand M
Department of Small Animal Surgery, Faculty of Veterinary Medicine, University of Liège, Belgium.
Am J Vet Res. 1993 Jan;54(1):178-82.
Somatosensory evoked potentials in response to tibial nerve stimulation were recorded from the scalp of 31 clinically normal mixed-breed dogs. The latency and amplitude of a main positive potential (P18), recorded with a frontal electrode referenced to the nose, were measured in subjects with body length ranging from 316 to 962 mm. A linear relation to body size explained the variations in latency among dogs (r2 = 0.81); the amplitude variations were explained in part by body size (r2 = 0.44). Bilateral tibial nerve stimulation significantly (P < 0.05) increased the amplitude of P18, but its latency was unaffected, compared with unilateral stimulation. Results of unilateral right and left tibial nerve stimulation were compared and were not different. Replacing acepromazine with xylazine as premedication before thiopental anesthesia did not influence the recordings.
从31只临床正常的混血犬头皮记录了对胫神经刺激的体感诱发电位。在体长范围为316至962毫米的受试犬中，测量了以鼻尖为参考电极的额电极记录的主要正电位（P18）的潜伏期和波幅。与体型的线性关系解释了犬之间潜伏期的变化（r2 = 0.81）；波幅变化部分由体型解释（r2 = 0.44）。与单侧刺激相比，双侧胫神经刺激显著（P < 0.05）增加了P18的波幅，但潜伏期未受影响。比较了右侧和左侧单侧胫神经刺激的结果，两者无差异。在硫喷妥钠麻醉前，用赛拉嗪替代乙酰丙嗪作为术前用药不影响记录结果。
