• J Clin Neurophysiol · Feb 2008

    Successful intraoperative spinal cord monitoring during scoliosis surgery using a total intravenous anesthetic regimen including dexmedetomidine.

    • David J Anschel, Andrew Aherne, Roy G Soto, Wesley Carrion, Carl Hoegerl, Palgun Nori, and Peggy A Seidman.
    • Department of Neurology, Stony Brook University Medical Center, Stony Brook, New York, USA. danschel@yahoo.com
    • J Clin Neurophysiol. 2008 Feb 1;25(1):56-61.

    AbstractIntraoperative neurophysiological monitoring (IONM) during corrective spinal surgery is widely used. Because of the possible interference with the recording of evoked potentials by inhalational anesthetics, total intravenous anesthetic (TIVA) regimens have been advocated. TIVA regimens may be difficult to use in pediatric populations due to metabolic factors. We report on the results of multimodality IONM during 18 cases in which a TIVA regimen incorporating dexmedetomidine (Precedex, Hespira, Lake Forest, IL) was used. Monitoring techniques included sensory (SSEP) and motor evoked potentials (MEP), as well as pedicle screw stimulation. SSEPs were maintained within an acceptable range of baseline amplitude (50%) and latency (10%), and MEPs remained elicitable throughout each case. We therefore found that the anesthetic regimen did not significantly interfere with any of the monitoring modalities used and conclude that IONM in the presence of dexmedetomidine is feasible under appropriate conditions.

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