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KMID : 1130620220180040410
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Journal of Clinical Neurology
2022 Volume.18 No. 4 p.410 ~ p.420
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Advances in Intraoperative Neurophysiology During Microvascular Decompression Surgery for Hemifacial Spasm
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Joo Byung-Euk
Kim Jun-Soon
Deletis Vedran
Park Kyung-Seok
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Abstract
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Microvascular decompression (MVD) is a widely used surgical intervention to relieve the abnormal compression of a facial nerve caused by an artery or vein that results in hemifacial spasm (HFS). Various intraoperative neurophysiologic monitoring (ION) and mapping methodologies have been used since the 1980s, including brainstem auditory evoked potentials, lateral-spread responses, Z-L responses, facial corticobulbar motor evoked potentials, and blink reflexes. These methods have been applied to detect neuronal damage, to optimize the successful decompression of a facial nerve, to predict clinical outcomes, and to identify changes in the excitability of a facial nerve and its nucleus during MVD. This has resulted in multiple studies continuously investigating the clinical application of ION during MVD in patients with HFS. In this study we aimed to review the specific advances in methodologies and clinical research related to ION techniques used in MVD surgery for HFS over the last decade. These advances have enabled clinicians to improve the efficacy and surgical outcomes of MVD, and they provide deeper insight into the pathophysiology of the disease.
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KEYWORD
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microvascular decompression, hemifacial spasm, intraoperative neurophysiologic monitoring
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