Transient Augmentation of Intraoperative Motor Evoked Potentials During Middle Cerebral Artery Aneurysm Surgery.

• Material Type: 博士論文
• Title: Transient Augmentation of Intraoperative Motor Evoked Potentials During Middle Cerebral Artery Aneurysm Surgery.
• Author/Editor: Gurung, Pritam; Motoyama, Yasushi; Takatani, Tsunenori; Takamura, Yoshiaki; Takeshima, Yasuhiro; Matsuda, Ryosuke; Tamura, Kentaro; Yamada, Shuichi; Nishimura, Fumihiko; Nakagawa, Ichiro; Park, Young-Su; Kawaguchi, Masahiko; Ohnishi, Hideyuki; Nakase, Hiroyuki
• Author Heading: Gurung, Pritam; Motoyama, Yasushi; Takatani, Tsunenori; Takamura, Yoshiaki; Takeshima, Yasuhiro; Matsuda, Ryosuke; Tamura, Kentaro; Yamada, Shuichi; Nishimura, Fumihiko; Nakagawa, Ichiro; Park, Young-Su; Kawaguchi, Masahiko; Ohnishi, Hideyuki; Nakase, Hiroyuki
• Publication, Distribution, etc.: Elsevier
• Publication Date: 2019-10
• Publication Date (W3CDTF): 2019-10
• Alternative Title: 中大脳動脈瘤手術における術中MEPの一過性増大に関する検討
• Periodical title: World neurosurgery
• No. or year of volume/issue: 130
• Volume: 130
• Pages: e127-e132
• ISSN (Periodical Title): ISSN : 1878-8750
• Degree grantor/type: 奈良県立医科大学
• Date Granted: 2019-12-05
• Dissertation Number: 乙第1445号
• Degree Type: 博士（医学）
• Text Language Code: eng
• Subject Heading: Augmentation of evoked potential; Middle cerebral artery aneurysm; Motor evoked potential; Temporary clipping
• Target Audience: 一般
• Note (General): type:Thesis; Objective: To study clinical significance of augmentation of intraoperative motor evoked potentials (MEPs) during direct open surgery for middle cerebral artery (MCA) aneurysms. Methods: Between 2009 and 2017, 134 MCA aneurysm surgeries were performed with intraoperative MEP monitoring. The frequency and cause of augmentation with >50% increase of MEP amplitude from baseline were studied. Factors associated with MEP augmentation were investigated. Results: MEP augmentation was demonstrated in 9 patients. All 9 events were observed just after application of the temporary clip to the parent artery. The ratio of the maximum amplitude to baseline was 2.6 ± 1.1 at an mean of 2.4 ± 1.1 minutes after parent artery occlusion. Ten patients who did not show MEP augmentation after parent artery occlusion were compared with the patients showing MEP augmentation. The distance of the temporary clip point from the midline was smaller in patients with MEP augmentation compared with patients without MEP augmentation (P = 0.033). Conclusions: MEP augmentation was thought to be an early ischemic sign preceding a significant decrease in MEPs during MCA aneurysm surgery. Transient augmentation of MEPs was more frequently observed in cases with a temporary clip applied to the more proximal part of the MCA.; 博士（医学）・乙第1445号・令和元年12月5日; © 2019 Elsevier Inc. All rights reserved.; identifier:World neurosurgery Vol.130 p.e127-e132 (2019 Oct); identifier:18788750; identifier:http://ginmu.naramed-u.ac.jp/dspace/handle/10564/3701; identifier:World neurosurgery, 130: e127-e132
• Access Restrictions: インターネット公開
• Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• Original Data Provider (Database): 奈良県立医科大学 : 奈良県立医科大学機関リポジトリ GINMU

Table of Contents

http://ginmu.naramed-u.ac.jp/dspace/bitstream/10564/3701/1/01%e4%b9%991445%e6%9c%ac%e6%96%87%e3%81%ae%e8%a6%81%e6%97%a8.pdf fulltext

http://ginmu.naramed-u.ac.jp/dspace/bitstream/10564/3701/2/02%e4%b9%991445%e5%af%a9%e6%9f%bb%e8%a6%81%e6%97%a8.pdf fulltext

http://ginmu.naramed-u.ac.jp/dspace/bitstream/10564/3701/3/03%e4%b9%991445%e6%9c%ac%e6%96%87.pdf fulltext