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Development of automatic infusion systems for sedatives and analgesics with surface EEGs and Auditory Evoked Potentials as Input Signals

Research Project

Project/Area Number 12671462
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Anesthesiology/Resuscitation studies
Research InstitutionHamamatsu University School of Medicine

Principal Investigator

DOI Matsuyuki  Hamamatsu University School of Medicine, Intensive Care Unit, Assistant Professor, 医学部附属病院, 講師 (10155616)

Co-Investigator(Kenkyū-buntansha) SATO Shigehito  Hamamatsu University School of Medicine, Department of Anesthesiology and Intensive Care, Professor, 医学部, 教授 (30143176)
MORITA Koji  Hamamatsu University School of Medicine, Surgical Center, Research Associate, 医学部附属病院, 助手 (30115513)
Project Period (FY) 2000 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2002: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2001: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2000: ¥2,100,000 (Direct Cost: ¥2,100,000)
Keywordsdepth of anesthesia / automatic infusion / electroencephalograph / auditory evoked potentials / target controlled infusion / Bispectral Index / Bispectral Indes
Research Abstract

The aim of this project was to develop automatic infusion systems which were able to control a sedative and an analgesic independently. We chose surface EEG variables and auditory evoked potentials as input signals to quantify levels of sedation and analgesia. We have performed following sub-studies to complete this project.
1) Development of target controlled infusion (TCI) systems for propofol and fentanyl
Using published pharmacokinetic models, we made up TCI systems which were able to control blood or effect site concentration of propofol and fentanyl independently.
2) Development of a computer system to integrate surface EEG variables and auditory evoked potentials
Bispectral Index (BIS) and auditory evoked potential index (AEPindex) were involved as numerical variables for surface EEG and auditory evoked potentials, respectively. BIS and AEPindex values were automatically recorded in the system.
3) Investigation of the interaction of propofol and fentanyl on EEG variables
We studied interaction of propofol and fentanyl on EEGs to develop an algorithm which could quantify level of sedation and analgesia independently.
4) Investigation of an algorithm to detect awareness using BIS and AEPindex
We could detect awareness more accurately using a combination of BIS and AEPindex
5) Effects of profound hypothermia on EEG variables
We investigated stability of EEG variables down to 22 degree centigrade. We found the AEPindex was most stable among the EEG variables studied during profound hypothermia.
In conclusions, we found that the combination of the surface EEG and auditory evoked potentials were useful to detect awareness more accurately, however the combination did not have enough ability to quantify level of analgesia.

Report

(4 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] 土井松幸: "皮質脳波,聴性誘発電位による鎮静度評価"ICUとCCU. 24・8. 591-598 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Matsuyuki Doi: "The interaction between propofol and fentanyl during ICU sedation : Effects on EEG variables"Journal of Clinical Monitoring and Computing. 16・8. 615 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 土井松幸: "聴性誘発電位(Auditory Evoked Potentials)による麻酔深度モニタリング"日本臨床麻酔学会誌. 21・2. 83-85 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Tadayoshi Kurita: "Auditory evoked potential index predicts the depth of sedation and movement in response to skin incision during sevoflurane anesthesia"Anesthesiology. 95・2. 364-370 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Matsuyuki Doi: "The combination of AEPex and BIS improves accuracy to detect awareness during propofol anaesthesia"Journal of Clinical Monitoring and Computing. 17・1. 79-80 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Matsuyuki Doi: "Analysis of the EEG bispectrum, auditory evoked potentials and the EEG power spectrum during sedation induced by propofol"ICU and CCU. 24(8). 591-598 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Matsuyuki Doi: "The interaction between propofol and fentanyl during ICU sedation : Effects on EEG variables"Journal of Clinical Monitoring and Computing. 16(8). 615 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Tadayoshi Kurita: "Auditory evoked potential index predicts the depth of sedation and movement in response to skin incision during sevoflurane anesthesia"Anesthesiology. 95(2). 364-370 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Matsuyuki Doi: "The combination of AEPex and BIS improves accuracy to detect awareness during propofol anaesthesia"Journal of Clinical Monitoring and Computing. 17(1), 2002. 79-80 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 土井松幸: "皮質脳波,聴性誘発電位による沈静度評価"ICUとCCU. 24・8. 291-598 (2000)

    • Related Report
      2002 Annual Research Report
  • [Publications] Matsuyuki Doi: "The interaction between propofol and fentanyl during ICU sedation : Effects on EEG variables"Journal of Clinical Monitoring and Computing. 16・8. 615 (2000)

    • Related Report
      2002 Annual Research Report
  • [Publications] 土井松幸: "聴性誘発電位(Auditory Evoked Potentials)による麻酔深度モニタリング"日本臨床麻酔学会誌. 21・2. 83-85 (2001)

    • Related Report
      2002 Annual Research Report
  • [Publications] Tadayoshi Kurita: "Auditory evoked potential index predicts the depth of sedation and movement in response to skin incision during sevoflurane anesthesia"Anesthesiology. 95・2. 364-370 (2001)

    • Related Report
      2002 Annual Research Report
  • [Publications] Matsuyuki Koi: "The conmbination of AEPex and BIS improves accuracy to detect awareness during propofol anaesthesia"Journal of Clinical Monitoring and Computing. 17・1. 79-80 (2002)

    • Related Report
      2002 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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