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外傷性脊髓損傷之體感覺誘發電位與預後關係

Somatosensory Evoked Potentials in Acute Traumatic Spinal Cord Injury and Its Prognostic Value

摘要


本研究利用18位急性外傷性脊髓損傷病患,在受傷後3至5週內接受後脛神經的體感覺誘發電位檢查(SEP),並觀察其臨床上神經恢復情形,以探討該檢查是否能作為脊髓受傷程度的定量或恢復可能性的早期預測。結果發現兩者均與SEP數值沒有正向相關。分析結果是因為SEP主要靠感覺輸入,對感覺、運動功能幾乎相同受損的病例可能可以相當準確地預測預後;但為那些感覺、運動損傷程度不相等的病人則無法作任何有效的預估。而脊髓的感覺與運動區域分佈不同,血液循環供給亦不盡相同,受傷時無法知道兩者的相關性,故SEP能在急性期提供的參考價值相當有限。

關鍵字

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並列摘要


The somatosensory evoked potentials following tibial nerve stimulation were recorded in 18 patients with acute traumatic spinal cord injuries at 3 to 5 weeks. The results were correlated with the patient's neurological recovery. One cervical case had absent transmission in unilateral cortical SEP but still with good neurological recovery later on, one lumbar case had no recorded SEP either at L2 or cortical level got complete recovery within 3 months. Two thoracic SCI had only prolong latencies in SEP, but no any neurological recovery at all. There was no constant rule between prolong latencies to severity of dysfunction or degree of recoveries in all cases. It is concluded that the SEP recorded from tibial nerve in predicting recovery of motor function remains limited because it only reflects the sensory imput route in spinal cord trauma.

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