Development of the estimate method of the anesthesia depth using the Poincare plot analysis of the electroencephalogram

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K10518
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Anesthesiology
• Research Institution: Kyoto Prefectural University of Medicine
• Principal Investigator: Hayashi Kazuko 京都府立医科大学, 医学(系)研究科(研究院), 客員講師 (40285276)
• Research Collaborator: SAWA Teiji 京都府立医科大学, 麻酔科学教室, 教授
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: ポアンカレ プロット / 複雑系 / 脳波 / 麻酔深度 / モニタリング / 周波数解析 / bispectral analysis / 筋電図

Outline of Final Research Achievements

We conducted a study to apply the quantification of the electroencephalographic Poincare plot distribution to a depth of anesthesia estimate (Poincare index). As the results, we found that Poincare index reflected depth of anesthesia well in the different anesthetic agent of various kinds of mechanisms, and in the wide age groups. The Poincare index could become a candidate for the depth of anesthesia index.
On the other hand, the relations between a BIS level and the Poincare index had two levels characteristics and the Poincare index became estranged from the BIS values in the shallow anesthesia depth. By adjustment of electroencephalographic Poincare plot index with the certain high frequency band, the BIS values will be more precisely estimated by Poincare index.

Free Research Field

麻酔科学、神経科学