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目的与方法：７例上肢感觉传导道无异常的病例，静脉注射硫喷妥钠５ｍｇ／ｋｇ后，分别观察注药前、注药后即刻、２、４和６ｍｉｎ上肢短潜伏期体感诱发电位，比较Ｐ１５、Ｎ２０、Ｐ２５各波的潜伏期以及Ｐ１５Ｎ２０、Ｎ２０Ｐ２５的峰间值。结果：各波潜伏期在注药后缩短，以注药后２、４ｍｉｎ最明显，６ｍｉｎ时已基本恢复，Ｐ１５Ｎ２０、Ｎ２０Ｐ２５峰间值在注药后减小，以２ｍｉｎ时减至最小，６ｍｉｎ时已基本恢复。结论：术中行体感诱发电位监测时，不宜使用硫喷妥钠。
PURPOSE AND METHODS: Seven cases of abnormal upper limb sensory conduction pathways were observed. After intravenous injection of 5mg / kg thiopental, the somatosensory evoked potentials of upper extremities short latency were observed before injection, immediately after injection, at 2,4 and 6 minutes respectively P15, N20, P25 wave latency and P15 N20, N20 P25 between peak values. Results: The latency of each wave was shortened after injection, the most obvious at 2,4min after injection, and basically recovered after 6 minutes. The peak value of P15N20 and N20P25 decreased after injection, and decreased to the minimum after 2 minutes , 6min has been basically restored. Conclusion: Intraoperative somatosensory evoked potential monitoring should not be used thiopental.