Meij Björn P, Suwankong Niyada, van den Brom Walter E, Venker-van Haagen Anjop J, Hazewinkel Herman A W
Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, The Netherlands.
Vet Surg. 2006 Feb;35(2):168-75. doi: 10.1111/j.1532-950X.2006.00128.x.
To determine somatosensory evoked potentials (SEPs) in dogs with degenerative lumbosacral stenosis (DLS) and in healthy dogs.
Clinical and experimental study.
Dogs with DLS (n = 21) and 11 clinically normal dogs, age, and weight matched.
Under anesthesia, the tibial nerve was stimulated at the caudolateral aspect of the stifle, and lumbar SEP (LSEP) were recorded percutaneously from S1 to T13 at each interspinous space. Cortical SEP (CSEP) were recorded from the scalp.
LSEP were identified as the N1-P1 (latency 3-6 ms) and N2-P2 (latency 7-13 ms) wave complexes in the recordings of dogs with DLS and control dogs. Latency of N1-P1 increased and that of N2-P2 decreased as the active recording electrode was moved cranially from S1 to T13. Compared with controls, latencies were significantly delayed in DLS dogs: .8 ms for N1-P1 and 1.7 ms for the N2-P2 complex. CSEP were not different between groups.
Surface needle recording of tibial nerve SEP can be used to monitor somatosensory nerve function of pelvic limbs in dogs. In dogs with DLS, the latency of LSEP, but not of CSEP, is prolonged compared with normal dogs.
In dogs with lumbosacral pain from DLS, the cauda equina compression is sufficient to affect LSEP at the lumbar level.
测定患有退行性腰椎管狭窄症（DLS）的犬和健康犬的体感诱发电位（SEP）。
临床与实验研究。
患有DLS的犬（n = 21）和11只年龄、体重匹配的临床正常犬。
在麻醉状态下，于膝关节后外侧刺激胫神经，并在每个棘突间隙从S1至T13经皮记录腰SEP（LSEP）。从头皮记录皮质SEP（CSEP）。
在患有DLS的犬和对照犬的记录中，LSEP被识别为N1 - P1（潜伏期3 - 6毫秒）和N2 - P2（潜伏期7 - 13毫秒）波群。随着活动记录电极从S1向头侧移至T13，N1 - P1的潜伏期增加，N2 - P2的潜伏期缩短。与对照组相比，DLS犬的潜伏期显著延迟：N1 - P1为0.8毫秒，N2 - P2波群为1.7毫秒。两组之间的CSEP无差异。
胫神经SEP的表面针电极记录可用于监测犬盆腔肢体的体感神经功能。在患有DLS的犬中，与正常犬相比，LSEP的潜伏期延长，而CSEP的潜伏期未延长。
在因DLS导致腰骶部疼痛的犬中，马尾神经受压足以影响腰椎水平的LSEP。
