タムラ　マナブ   Tamura Manabu   田村　学    所属   研究施設 研究施設    職種   准教授
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	Monitoring Cortico-cortical Evoked Potentials Using Only Two 6-strand Strip Electrodes for Gliomas Extending to the Dominant Side of Frontal Operculum During One-step Tumor Removal Surgery.
掲載誌名	正式名：World neurosurgery 略　 称：World Neurosurg ISSNコード：18788769/18788750
掲載区分	国外
巻・号・頁	165,pp.e732-e742
著者・共著者	SAITO Taiichi†, MURAGAKI Yoshihiro, TAMURA Manabu, MARUYAMA Takashi, NITTA Masayuki, TSUZUKI Shunsuke, FUKUI Atsushi, KORIYAMA Shunichi, KAWAMATA Takakazu
発行年月	2022/09
概要	OBJECTIVE:Resection of the dominant side of gliomas extending to the frontal operculum has high risk of severe language dysfunction. Here, we report recording cortico-cortical evoked potentials (CCEP) using only two 6-strand strip electrodes to monitor language-related fibers intraoperatively. We examined whether this simple procedure is useful for removing gliomas extending to the dominant side of frontal operculum.METHODS:This study included 7 cases of glioma extending to the left frontal operculum. The frontal language area (FLA) was first identified by functional mapping during awake craniotomy. Next, a 6-strand strip electrode was placed on the FLA, while on the temporal side, an electrode was placed so as to slide parallel to the sylvian fissure toward the posterior language area. Electrical stimulation was performed using the electrode on the frontal side, and CCEPs were measured from the electrode on the temporal side.RESULTS:CCEPs were detected in all cases. Immediately after surgery, all patients demonstrated language dysfunction to varying degree. CCEP decreased to 10% in 1 patient, who recovered language function after 24 months. CCEP decreased slightly 80% in 1, and, in the 5 other cases, CCEPs did not change. These 5 patients soon recovered language function within 2 weeks to 1 month.CONCLUSIONS:This study confirmed the utility of CCEP monitoring using only two 6-strand strip electrodes during one-step surgery. We believe this simple method helped in monitoring intraoperative language function and predicting its postoperative recovery in patients with gliomas extending to the dominant side of frontal operculum.
DOI	10.1016/j.wneu.2022.06.141
PMID	35798294