Berenstein A, Young W, Ransohoff J, Benjamin V, Merkin H
J Neurosurg. 1984 Apr;60(4):777-85. doi: 10.3171/jns.1984.60.4.0777.
Somatosensory evoked potentials (SEP's) were monitored during 42 angiographic examinations and 33 therapeutic embolization procedures in 41 patients. The SEP amplitude decreased in 36 of the 42 angiographic techniques, but recovered to baseline within 2 to 4 minutes in all but one case. Angiographic opacification of the anterior spinal artery reduced SEP amplitude in all but two patients, who had lost their proprioceptive sense and had no recognizable SEP prior to the procedure. No neurological complications resulted from any of the angiography procedures. Of the 33 embolizations, 15 were performed in 12 patients with arteriovenous malformations (AVM's) and 18 in 17 patients with spinal canal tumors. There was only one complication associated with embolization: that occurred in a patient with an intramedullary spinal cord AVM. Monitoring SEP amplitude in this series of patients provided a means of rapidly and reliably identifying the anterior spinal artery, served to assess the potential risk of contemplated steps in embolization, and aided in the execution of the angiographic procedures.
在41例患者的42次血管造影检查和33次治疗性栓塞手术过程中监测体感诱发电位（SEP）。42次血管造影技术中有36次SEP波幅下降，但除1例患者外，其余所有患者的SEP波幅在2至4分钟内恢复至基线水平。除2例患者外，脊髓前动脉的血管造影显影均降低了SEP波幅，这2例患者在手术前已丧失本体感觉且无可识别的SEP。所有血管造影手术均未导致神经并发症。在33次栓塞手术中，12例患有动静脉畸形（AVM）的患者进行了15次栓塞，17例患有椎管肿瘤的患者进行了18次栓塞。栓塞仅发生1例并发症：发生在1例髓内脊髓AVM患者身上。在这组患者中监测SEP波幅提供了一种快速、可靠地识别脊髓前动脉的方法，有助于评估栓塞预期步骤的潜在风险，并辅助血管造影手术的实施。
