Owen J H, Naito M, Bridwell K H
Division of Orthopedic Surgery, Washington University School of Medicine, St. Louis, Missouri.
Spine (Phila Pa 1976). 1990 Sep;15(9):852-7. doi: 10.1097/00007632-199009000-00003.
Somatosensory evoked potentials (SEPs) and neurogenic-motor evoked potentials (NMEPs) were recorded after overdistraction of the spinal cord at T5-T6, T12-L1, or L3-L4. Measures of spinal cord perfusion and clinical status were also administered. Results indicated that stiffer spinal segments allowed less distraction than more flexible segments. SEPs and NMEPs were lost quickly after overdistraction in stiff segments and slowly in more flexible segments. However, SEPs were less sensitive than NMEPs to effects from overdistraction. Spinal cord perfusion and integrity were consistent with reduced perfusion and structural damage after overdistraction in stiff segments; extremely reduced perfusion but no structural changes in more flexible segments. The application of these results to the clinical situation was provided.
在T5 - T6、T12 - L1或L3 - L4节段脊髓过度牵张后记录体感诱发电位（SEP）和神经源性运动诱发电位（NMEP）。同时也进行了脊髓灌注和临床状况的测量。结果表明，较僵硬的脊髓节段比更灵活的节段允许的牵张更少。在僵硬节段过度牵张后，SEP和NMEP迅速消失，而在更灵活的节段则消失较慢。然而，SEP对过度牵张的影响不如NMEP敏感。脊髓灌注和完整性与僵硬节段过度牵张后灌注减少和结构损伤一致；在更灵活的节段灌注极度减少但无结构变化。还提供了这些结果在临床情况中的应用。
