Effects of spinal cord lesioning on somatosensory and neurogenic-motor evoked potentials

Jeffrey H. Owen; Arthur B. Jenny; Masatoshi Naito; Kristy Weber; Keith H. Bridwell; Ronald McGhee

doi:10.1097/00007632-198907000-00005

Effects of spinal cord lesioning on somatosensory and neurogenic-motor evoked potentials

Jeffrey H. Owen, Arthur B. Jenny, Masatoshi Naito, Kristy Weber, Keith H. Bridwell, Ronald McGhee

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Abstract

Somatosensory (SEPs) and neurogenic-motor evoked potentials (NMEPs) were elicited from 16 hogs and two humans before, during, and after spinal cordotomy, dorsal, or ventral root rhizotomy. Results indicated that SEPs appear to be insensitive to the effects of motor tract lesioning in hogs and humans. In every case of motor paraplegia, SEPs remained unchanged in the presence of abnormal ischiatic/sciatic NMEPs. These results suggesit that SEPs are not adequately sensitive to the functional status of the motor system in hogs and humans. Ischiatic/sciatic NMEPs remained unchanged after sensory tract lesioning, suggesting that these NMEPs are insensitive to the functional status of the sensory system. These results suggest that SEPs and NMEPs should be used in combination when monitoring spinal cord function during surgeries that place that structure at risk.

Original language	English
Pages (from-to)	673-682
Number of pages	10
Journal	Spine
Volume	14
Issue number	7
DOIs	https://doi.org/10.1097/00007632-198907000-00005
State	Published - Jul 1989

Keywords

Combined monitoring
Neuroablation
Neurogenic-motor evoked potential
Somatosensory evoked potential

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title = "Effects of spinal cord lesioning on somatosensory and neurogenic-motor evoked potentials",

abstract = "Somatosensory (SEPs) and neurogenic-motor evoked potentials (NMEPs) were elicited from 16 hogs and two humans before, during, and after spinal cordotomy, dorsal, or ventral root rhizotomy. Results indicated that SEPs appear to be insensitive to the effects of motor tract lesioning in hogs and humans. In every case of motor paraplegia, SEPs remained unchanged in the presence of abnormal ischiatic/sciatic NMEPs. These results suggesit that SEPs are not adequately sensitive to the functional status of the motor system in hogs and humans. Ischiatic/sciatic NMEPs remained unchanged after sensory tract lesioning, suggesting that these NMEPs are insensitive to the functional status of the sensory system. These results suggest that SEPs and NMEPs should be used in combination when monitoring spinal cord function during surgeries that place that structure at risk.",

keywords = "Combined monitoring, Neuroablation, Neurogenic-motor evoked potential, Somatosensory evoked potential",

author = "Owen, {Jeffrey H.} and Jenny, {Arthur B.} and Masatoshi Naito and Kristy Weber and Bridwell, {Keith H.} and Ronald McGhee",

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T1 - Effects of spinal cord lesioning on somatosensory and neurogenic-motor evoked potentials

AU - Owen, Jeffrey H.

AU - Jenny, Arthur B.

AU - Naito, Masatoshi

AU - Weber, Kristy

AU - Bridwell, Keith H.

AU - McGhee, Ronald

PY - 1989/7

Y1 - 1989/7

N2 - Somatosensory (SEPs) and neurogenic-motor evoked potentials (NMEPs) were elicited from 16 hogs and two humans before, during, and after spinal cordotomy, dorsal, or ventral root rhizotomy. Results indicated that SEPs appear to be insensitive to the effects of motor tract lesioning in hogs and humans. In every case of motor paraplegia, SEPs remained unchanged in the presence of abnormal ischiatic/sciatic NMEPs. These results suggesit that SEPs are not adequately sensitive to the functional status of the motor system in hogs and humans. Ischiatic/sciatic NMEPs remained unchanged after sensory tract lesioning, suggesting that these NMEPs are insensitive to the functional status of the sensory system. These results suggest that SEPs and NMEPs should be used in combination when monitoring spinal cord function during surgeries that place that structure at risk.

AB - Somatosensory (SEPs) and neurogenic-motor evoked potentials (NMEPs) were elicited from 16 hogs and two humans before, during, and after spinal cordotomy, dorsal, or ventral root rhizotomy. Results indicated that SEPs appear to be insensitive to the effects of motor tract lesioning in hogs and humans. In every case of motor paraplegia, SEPs remained unchanged in the presence of abnormal ischiatic/sciatic NMEPs. These results suggesit that SEPs are not adequately sensitive to the functional status of the motor system in hogs and humans. Ischiatic/sciatic NMEPs remained unchanged after sensory tract lesioning, suggesting that these NMEPs are insensitive to the functional status of the sensory system. These results suggest that SEPs and NMEPs should be used in combination when monitoring spinal cord function during surgeries that place that structure at risk.

KW - Combined monitoring

KW - Neuroablation

KW - Neurogenic-motor evoked potential

KW - Somatosensory evoked potential

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Effects of spinal cord lesioning on somatosensory and neurogenic-motor evoked potentials

Abstract

Keywords

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