Kai Y, Owen J H, Allen B T, Dobras M, Davis C
Department of Orthopaedic Surgery, Fukuoka City Hospital, Japan.
Spine (Phila Pa 1976). 1995 Feb 1;20(3):291-6. doi: 10.1097/00007632-199502000-00006.
Sciatic neurogenic motor-evoked potentials, spinal evoked potentials, and somatosensory-evoked potentials were recorded in 12 anesthetized dogs that had arterial ischemia of the lumbar cord produced by ligation of segmental arteries. The presence or absence of the above-mentioned potentials was compared with the clinical status of repeated wake-up tests.
Although these results were complicated, sciatic neurogenic motor-evoked potential was more sensitive to the spinal cord ischemia and was a better predictor of clinical outcome than spinal evoked potential and somatosensory-evoked potential. However, the presence was not a guarantee of normal function. The initial morphologic change of these potentials secondary to ischemia consisted of a decrease in amplitude and in the number of peaks without a shift of latency.
The present study suggests that the peripheral neurogenic motor-evoked potential is a better warning system for spinal cord ischemia and that its adoption may contribute to the prevention of cord ischemia during spinal surgery, whereas somatosensory-evoked potential and spinal evoked potential cannot be indices.
对12只麻醉犬进行记录，这些犬通过结扎节段动脉造成腰髓动脉缺血。将上述电位的有无与重复唤醒试验的临床状态进行比较。
尽管这些结果较为复杂，但坐骨神经源性运动诱发电位对脊髓缺血更敏感，并且比脊髓诱发电位和体感诱发电位更能预测临床结果。然而，其存在并不能保证功能正常。缺血继发的这些电位的初始形态学改变包括波幅降低和峰数减少，潜伏期无移位。
本研究表明，周围神经源性运动诱发电位是脊髓缺血更好的预警系统，采用该电位可能有助于预防脊柱手术期间的脊髓缺血，而体感诱发电位和脊髓诱发电位则不能作为指标。
