Wulff C H
Dan Med Bull. 1985 Oct;32(5):282-6.
Evoked potential studies were undertaken in nine patients with acute transverse myelopathy three to 25 weeks after onset. The visual evoked potentials (VEP), brain stem auditory evoked potentials (BAEP) or somato-sensory evoked potentials (SEP) after median nerve stimulation were normal in all but one with prolonged latency of VEP. The SEP after tibial nerve stimulation was abnormal in six patients--in three, there was no cortical potential from either side (total conduction block); in two, there was a block on one side and a slightly delayed latency on the other; and in one patient there was a slightly prolonged latency bilaterally. The degree of abnormality was related to the severity of the disease. The recovery was poor in four of five patients with a conduction block and good in three of four patients with a normal or slightly delayed SEP after tibial nerve stimulation. The findings are attributed to oedema and necrosis in the central nervous system, whereas demyelination probably plays a minor role in acute transverse myelopathy.
对9例急性横贯性脊髓炎患者在发病3至25周后进行了诱发电位研究。除1例视觉诱发电位（VEP）潜伏期延长外，其余患者的视觉诱发电位（VEP）、脑干听觉诱发电位（BAEP）或正中神经刺激后的体感诱发电位（SEP）均正常。6例患者胫神经刺激后的SEP异常——3例双侧均无皮质电位（完全传导阻滞）；2例一侧有阻滞，另一侧潜伏期稍有延迟；1例患者双侧潜伏期稍有延长。异常程度与疾病严重程度相关。5例传导阻滞患者中有4例恢复较差，4例胫神经刺激后SEP正常或稍有延迟的患者中有3例恢复良好。这些发现归因于中枢神经系统的水肿和坏死，而脱髓鞘在急性横贯性脊髓炎中可能起次要作用。
