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  • Title: [Intraoperative motor evoked potential monitoring: a review of 115 cases].
    Author: Kakimoto M, Inoue S, Sakamoto T, Kawaguchi M, Kitaguchi K, Furuya H.
    Journal: Masui; 2000 Mar; 49(3):240-4. PubMed ID: 10752314.
    Abstract:
    We reviewed our experiences of intraoperative motor evoked potentials (MEPs) monitoring for 115 operations on the spine or spinal cord. We observed compound muscle action potentials from bilateral anterior tibial muscles by electrical transcranial stimulation of the motor cortex under general anesthesia induced and maintained with intravenous anesthetics (ketamine, propofol, or droperidol), fentanyl, and 50% nitrous oxide. Partial neuromuscular blockade was obtained with continuous infusion of vecuronium. MEPs were recorded bilaterally in 91 cases (79%) and laterally in 18 cases (16%). Postoperative deterioration of motor function was observed in 2 cases and amplitude of MEPs decreased more than 50% of control values in both cases. Intraoperative monitoring of MEPs might be a reliable indicator of spinal cord motor function.
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