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자료유형
학술저널
저자정보
저널정보
대한재활의학회 Annals of Rehabilitation Medicine Annals of Rehabilitation Medicine 제35권 제2호
발행연도
2011.1
수록면
236 - 242 (7page)

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Objective To establish reference data for dermatomal somatosensory evoked potentials (DSEP) using a stimulation intensity lower than what is conventionally utilized. Method Fifty subjects (25 older adults>48 years old; 25 younger adults<32 years old) without history of neck pain or cervical spine surgery were enrolled. The DSEP study was performed with stimulation intensities of 1.0, 1.5, and 2.5 times sensory threshold (ST) on right arms for C5, C6, C7, and C8 dermatomes. Results The mean latencies of DSEP stimulating C5, C6, C7, and C8 dermatomes with 1.5 times ST intensity were 17.6±1.7 ms, 22.2±2.1 ms, 22.8±1.4 ms, and 22.6±1.8 ms, respectively. The mean amplitude (N1P1) of DSEP stimulating C5, C6, C7, and C8 dermatomes with 1.5 times ST intensity were 0.9±0.4 μV, 0.9±0.5 μV, 1.0±0.6 μV, and 1.1±0.8 μV, respectively. The C5, C6, C7, and C8 DSEP were evoked in 84%, 98%, 100%, and 96% of cases with 2.5 times ST compared to 64%, 56%, 60%, and 62% with 1.5 times ST, respectively. When one DSEP was not evoked, the DSEP of the opposite side was evoked only in 2 subjects. Conclusion This study provides the reference data of DSEP with lower stimulation intensities than are conventionally utilized. Additionally, two cases of clinical significance were reported.

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