Stimulation threshold potentials of intraoperative cortical motor mapping using monopolar trains of five in pediatric epilepsy surgery.

Child's Nervous System : ChNS : Official Journal of the International Society for Pediatric Neurosurgery
Wai Hoe NgHiroshi Otsubo

Abstract

Direct cortical stimulation in commonly used for the accurate localization of the motor cortex but the electrical threshold stimulation parameters with this technique had not been fully established. A retrospective review of 15 cases of pediatric surgical cases were performed. The patients consisted of nine male patients and six female patients with age range from 2 to 18 years (mean: 10.8 years; median: 14 years). The most common pathology was cortical dysplasia (nine cases). Stimulation was performed with a train of five stimulations (range five-seven stimulations; <5% of stimulations required more than five stimulations) applied, each train of 50 micros pulse duration, with an interstimulus interval of 1.1 msec. Stimulation intensity commenced at 25 V and this was increased at 5-10 V increments until motor evoked potentials waveforms of sufficient duration and morphology were consistently generated. Monopolar electrical stimulation threshold for intraoperative motor cortical mapping were found to be more consistent in the upper limb compared to lower limb and facial muscles. Evoked responses from the extensor digitorium communis had the highest recorded rate (83.7%) and required the lowest stimulation voltage (36.0 V). The s...Continue Reading

References

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Aug 23, 2001·Pediatric Neurology·S ChitokuO C Snead
Aug 2, 2002·Journal of Child Neurology·Takuya AkaiO Carter Snead
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Citations

Mar 19, 2014·Journal of Neurosurgery. Pediatrics·Philippe SchuchtJürgen Beck
Mar 24, 2012·Neurosurgery Clinics of North America·Bryan D ChoiJohn H Sampson
Jul 5, 2011·Epilepsy Research·Ismail S MohamedDouglas Cheyne
Mar 3, 2018·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·Prasanna Jayakar
Mar 15, 2011·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·Sonya G WangMirela V Simon
Oct 15, 2019·Advanced Materials·Florian FalleggerStéphanie P Lacour
Dec 8, 2011·Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society·Stjepana KovacBeate Diehl
Jun 30, 2019·Journal of Neurosurgery. Pediatrics·Eisha A ChristianJames T Rutka
Jun 23, 2021·Physics in Medicine and Biology·Joseph Yuan-Mou YangFernando Calamante

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