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A new criterion for detection of radiculopathy based on motor evoked potentials and intraoperative nerve root monitoring.

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1388-2457

http://hdl.handle.net/10641/1676

10.1016/j.clinph.2018.07.005

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(Repositorio Institucional de la Universidad Francisco de Vitoria)

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Title:: A new criterion for detection of radiculopathy based on motor evoked potentials and intraoperative nerve root monitoring.
Tema:: Transcranial electrical stimulation; Motor evoked potential; Intraoperative radiculopathy
Description:: Objective Our objective is to use the area of the motor evoked potential (MEP) as a diagnostic tool for intraoperative radicular injury. Methods We analyzed the intraoperative neurophysiological monitoring data and clinical outcomes of 203 patients treated for dorsolumbar spine deformity. The decrease in amplitude was compared with the reduction in the MEP area. Results In 11 cases, new intraoperative injuries occurred, nine of them were lumbar radiculopathies. Our new criteria, a decrease MEP area of 70%, yielded a sensitivity and specificity of 1, since it detected all the radicular injuries, with no false positive cases. Using a 70% amplitude decrease criteria, we obtained a sensitivity of 0,89 and a specificity of 0,99. A lower threshold (65% amplitude reduction) yielded a higher number of false positives, whereas a higher threshold (75 and 80%) gave rise to a higher number of false negatives. Conclusions The measurement of the MEP area gave evidence to be more reliable and accurate than the measurement of the amplitude reduction in order to assess and detect intraoperative radicular injuries.; pre-print; 960 KB
Idioma:: English
Autor/Productor:: Traba, Alfredo; Romero Muñoz, Juan Pablo; Arranz, Beatriz; Vilela, Concepción
Publisher:: Clinical Neurophysiology
Rights:: Atribución-NoComercial-SinDerivadas 3.0 España; http://creativecommons.org/licenses/by-nc-nd/3.0/es/; openAccess
Date:: 2019-09-10T11:49:59Z; 2018
Tipo de recurso:: article

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9. <dcterms:abstract>Objective Our objective is to use the area of the motor evoked potential (MEP) as a diagnostic tool for intraoperative radicular injury. Methods We analyzed the intraoperative neurophysiological monitoring data and clinical outcomes of 203 patients treated for dorsolumbar spine deformity. The decrease in amplitude was compared with the reduction in the MEP area. Results In 11 cases, new intraoperative injuries occurred, nine of them were lumbar radiculopathies. Our new criteria, a decrease MEP area of 70%, yielded a sensitivity and specificity of 1, since it detected all the radicular injuries, with no false positive cases. Using a 70% amplitude decrease criteria, we obtained a sensitivity of 0,89 and a specificity of 0,99. A lower threshold (65% amplitude reduction) yielded a higher number of false positives, whereas a higher threshold (75 and 80%) gave rise to a higher number of false negatives. Conclusions The measurement of the MEP area gave evidence to be more reliable and accurate than the measurement of the amplitude reduction in order to assess and detect intraoperative radicular injuries.</dcterms:abstract>
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  1. <dc:title>A new criterion for detection of radiculopathy based on motor evoked potentials and intraoperative nerve root monitoring.</dc:title>
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  9. <dc:description>Objective Our objective is to use the area of the motor evoked potential (MEP) as a diagnostic tool for intraoperative radicular injury. Methods We analyzed the intraoperative neurophysiological monitoring data and clinical outcomes of 203 patients treated for dorsolumbar spine deformity. The decrease in amplitude was compared with the reduction in the MEP area. Results In 11 cases, new intraoperative injuries occurred, nine of them were lumbar radiculopathies. Our new criteria, a decrease MEP area of 70%, yielded a sensitivity and specificity of 1, since it detected all the radicular injuries, with no false positive cases. Using a 70% amplitude decrease criteria, we obtained a sensitivity of 0,89 and a specificity of 0,99. A lower threshold (65% amplitude reduction) yielded a higher number of false positives, whereas a higher threshold (75 and 80%) gave rise to a higher number of false negatives. Conclusions The measurement of the MEP area gave evidence to be more reliable and accurate than the measurement of the amplitude reduction in order to assess and detect intraoperative radicular injuries.</dc:description>
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        <field name="value">Arranz, Beatriz</field>
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        <field name="value">1388-2457</field>
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        <field name="value">Objective Our objective is to use the area of the motor evoked potential (MEP) as a diagnostic tool for intraoperative radicular injury. Methods We analyzed the intraoperative neurophysiological monitoring data and clinical outcomes of 203 patients treated for dorsolumbar spine deformity. The decrease in amplitude was compared with the reduction in the MEP area. Results In 11 cases, new intraoperative injuries occurred, nine of them were lumbar radiculopathies. Our new criteria, a decrease MEP area of 70%, yielded a sensitivity and specificity of 1, since it detected all the radicular injuries, with no false positive cases. Using a 70% amplitude decrease criteria, we obtained a sensitivity of 0,89 and a specificity of 0,99. A lower threshold (65% amplitude reduction) yielded a higher number of false positives, whereas a higher threshold (75 and 80%) gave rise to a higher number of false negatives. Conclusions The measurement of the MEP area gave evidence to be more reliable and accurate than the measurement of the amplitude reduction in order to assess and detect intraoperative radicular injuries.</field>
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      1. <field name="value">Clinical Neurophysiology</field>
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