Acta Neurochir (2015) 157:1505–1512 DOI 10.1007/s00701-015-2492-7
CLINICAL ARTICLE - FUNCTIONAL
Free-running EMG monitoring during microvascular decompression for hemifacial spasm Masafumi Fukuda 1 & Tetsuro Takao 1 & Tetsuya Hiraishi 1 & Yukihiko Fujii 1
Received: 23 April 2015 / Accepted: 18 June 2015 / Published online: 5 July 2015 # Springer-Verlag Wien 2015
Abstract Background The aim of this work is to determine if freerunning electromyography (frEMG) can detect activity before and after microvascular decompression (MVD) treatment for hemifacial spasm (HFS), and to evaluate correlations of frEMG findings with abnormal muscle responses (AMRs) or facial motor-evoked potentials (FMEPs). Methods To elicit nerve responses while carrying out frEMG recording before and after MVD, saline, a lactic solution, or artificial cerebrospinal fluid was injected onto the root exit zone of the facial nerve. Results Significantly higher frEMG activity was observed following saline injection than for the other solutions (p
CLINICAL ARTICLE - FUNCTIONAL
Free-running EMG monitoring during microvascular decompression for hemifacial spasm Masafumi Fukuda 1 & Tetsuro Takao 1 & Tetsuya Hiraishi 1 & Yukihiko Fujii 1
Received: 23 April 2015 / Accepted: 18 June 2015 / Published online: 5 July 2015 # Springer-Verlag Wien 2015
Abstract Background The aim of this work is to determine if freerunning electromyography (frEMG) can detect activity before and after microvascular decompression (MVD) treatment for hemifacial spasm (HFS), and to evaluate correlations of frEMG findings with abnormal muscle responses (AMRs) or facial motor-evoked potentials (FMEPs). Methods To elicit nerve responses while carrying out frEMG recording before and after MVD, saline, a lactic solution, or artificial cerebrospinal fluid was injected onto the root exit zone of the facial nerve. Results Significantly higher frEMG activity was observed following saline injection than for the other solutions (p
