脊髓诱发电位的实验研究

An experimental study of spinal cord evoked potentials in rabbits

中文关键词:  脊髓诱发电位,牵张性脊髓损伤,术中监测

英文关键词:Spinal cord evoked potential,Traction spinal cord injury,Intraoperative monitoring,

中文摘要:

  为探索脊髓诱发电位（Spinalcordevokednotentials，SCEP）在术中监测的安全范围，将刺激和记录线电极分别置于24只大耳白兔T7～T8、L4～L5间隙硬障外，记录正常电位后对脊髓施加纵向牵张力，至实验要求的波幅。波幅下降至正常的80％组脊髓组织结构轻微改变，脊髓功能正常；下降至50％组及＜50％组则出现不可逆损害。结果表明，SCEP波形稳定，其波幅下降至80％是脊髓损伤的危险信号，下降至50％或50％以下将产生不可逆的脊髓损伤。

英文摘要:

  Stimu1us and record bipolar catheter electrodes were inserted at the midline of the dorsalepidural space of T7-T8 and L4-L5 of twenty-four rabbits,spectively,for intraoperative monitoring toconfirm the safety range of the SCEP changes. The SCEP amplitude