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Best ventilatory strategy with evaluating renal blood flow in acute respiratory distress syndrome

Research Project

Project/Area Number 16H05458
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Anesthesiology
Research InstitutionOsaka University

Principal Investigator

Fujino Yuji  大阪大学, 医学系研究科, 教授 (50252672)

Co-Investigator(Kenkyū-buntansha) 内山 昭則  大阪大学, 医学系研究科, 准教授 (00324856)
井口 直也  大阪大学, 医学系研究科, 助教 (00372623)
Research Collaborator YOSHIDA Takeshi  
KOYAMA Yukiko  
YAMASHITA Tomonori  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2016: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
Keywords急性呼吸不全 / PEEP / 人工呼吸関連肺傷害 / 筋弛緩 / 人工呼吸 / 急性肺傷害 / 急性腎傷害 / 急性肺障害 / 不同調 / 腎血流 / 急性腎障害 / 経肺圧 / 食道内圧 / 換気モード
Outline of Final Research Achievements

In acute respiratory distress syndrome, atelectatic lung tissue impairs transmission of negative swings in pleural pressure (Ppl) that result from diaphragmatic contraction. Localized more negative Ppl increases dependent lung stretch by drawing gas either from other lung regions or from ventilator. In this study we aimed to evaluate the effect of PEEP recruiting atelectasis on lung injury using PET scan and so on in animals and patients. Although injury during muscle paralysis was predominantly in nondependent and middle lung regions at low PEEP, strong inspiratory effort increased injury indicated by PET scan in dependent lung. Stronger effort caused overstretch and greater tidal recruitment in dependent lung compared with muscle paralysis. In contrast, high PEEP minimized lung injury by more uniformly distributing negative Ppl, and lowering the magnitude of spontaneous effort. High PEEP minimized effort-dependent lung injury in severe ARDS, which may offset need for paralysis.

Academic Significance and Societal Importance of the Research Achievements

重症急性呼吸不全の死亡率は30~50%と現在でも以前高率である。救命するためには陽圧人工呼吸が必須であるが、人工呼吸により肺をさらに痛めてしまう危険性があるため検討が続けられている。呼吸不全の際には強い呼吸困難から頻呼吸となるため人工呼吸器による補助が行われてきた。そのために自発呼吸に同調できる人工呼吸器の改良が行われてきた。しかし重症度が高くなると自発呼吸により発生する圧力そのものが肺傷害を悪化させ予後を悪化させることが判明した。筋弛緩薬を投与し自発呼吸を止めることで自発呼吸による肺傷害を避けることはできるが、呼吸筋の廃用性萎縮を招く。本研究によりPEEPによる予後改善の可能性が示唆された。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (18 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (1 results) Journal Article (9 results) (of which Int'l Joint Research: 8 results,  Peer Reviewed: 8 results,  Open Access: 7 results) Presentation (7 results) (of which Int'l Joint Research: 3 results,  Invited: 4 results) Remarks (1 results)

  • [Int'l Joint Research] トロント大学(カナダ)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] Impact of spontaneous breathing during mechanical ventilation in acute respiratory distress syndrome2019

    • Author(s)
      Yoshida T, Amato MBP, Kavanagh BP, Fujino Y
    • Journal Title

      Current Opinion in Critical Care

      Volume: 25 Issue: 2 Pages: 192-198

    • DOI

      10.1097/mcc.0000000000000597

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Guiding ventilation with transpulmonary pressure2019

    • Author(s)
      Yoshida T,Grieco DL, Brochard L
    • Journal Title

      Intensive Care Medicine

      Volume: 45 Issue: 4 Pages: 535-538

    • DOI

      10.1007/s00134-018-5483-3

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Reverse Triggering Causes Injurious Inflation during Mechanical Ventilation.2018

    • Author(s)
      Yoshida T,Nakamura MAM,Morais CCA, AmatoMBP, Kavanagh BP
    • Journal Title

      American Journal of Respiratory and Critical Care Medicine

      Volume: 198 Issue: 8 Pages: 1096-1099

    • DOI

      10.1164/rccm.201804-0649le

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Asynchrony Consequences & Management2018

    • Author(s)
      Pham T, Telias I, Piraino T, Yoshida T, Brochard L
    • Journal Title

      Critical Care Clinics

      Volume: 34 Issue: 3 Pages: 325-341

    • DOI

      10.1016/j.ccc.2018.03.008

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A Comparison of the Adjustable Ranges of Inspiratory Pressurization During Pressure Controlled Continuous Mandatory Ventilation of 5 ICU Ventilators.2018

    • Author(s)
      Koyama Y, Uchiyama A, Yoshida J, Yoshida T, Yamashita T, Fujino Y
    • Journal Title

      Respiratory Care

      Volume: 63 Issue: 7 Pages: 849-858

    • DOI

      10.4187/respcare.05286

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Understanding Spontaneous vs. Ventilator Breaths: Impact and Monitoring.2018

    • Author(s)
      Yoshida T,Amato MBP, Kavanagh BP
    • Journal Title

      Intensive Care Medicine

      Volume: 44 Issue: 12 Pages: 2235-2238

    • DOI

      10.1007/s00134-018-5145-5

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Esophageal Pressure Monitoring: Why, when and how?2018

    • Author(s)
      Yoshida T, Brochard L
    • Journal Title

      Current Opinion in Critical Care

      Volume: 24 Issue: 3 Pages: 216-222

    • DOI

      10.1097/mcc.0000000000000494

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 呼吸管理 人工呼吸管理下の自発呼吸と肺傷害の関係2018

    • Author(s)
      吉田健史
    • Journal Title

      分子呼吸器学

      Volume: 22 Pages: 56-59

    • Related Report
      2018 Annual Research Report
  • [Journal Article] High positive end-expiratory pressure renders spontaneous effort non-injurious2018

    • Author(s)
      Morais CCA, Koyama Y, Yoshida T, Plens GM, Gomes S, Ramos COP, Pereira SM, Kawaguchi N, Yamamoto H, Uchiyama A, Borges JB, Melo MFV, Tucchii MR, Amato MBP, Kavanagh BP, Costa ELV, Fujino Y
    • Journal Title

      American Journal of Respiratory and Critical Care Medicine

      Volume: 197

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Spontaneous breathing in ARDS2019

    • Author(s)
      Yoshida T
    • Organizer
      Mechanical Ventilation Symposium2019
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] The Darkside of spontaneous breathing in ARDS2019

    • Author(s)
      Yoshida T
    • Organizer
      The Royal Melbourne Hospital Ground Round
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] The Darkside of spontaneous breathing in ARDS2018

    • Author(s)
      Yoshida T
    • Organizer
      Critical Care Canada Forum2018
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Spontaneous breathing in ARDS2018

    • Author(s)
      Yoshida T
    • Organizer
      Mechanical Ventilation Symposium2018
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Current concept of mechanical ventilation in ARDS patients2017

    • Author(s)
      Fujino Y
    • Organizer
      World congress of surgery and anesthesia 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Spontaneous Breathing During Mechanical Ventilation Injures Dependent Lung2017

    • Author(s)
      Koyama Y, Yoshida T, Nakahashi S, Uchiyama A, Kawaguchi, Yamamoto H, Kavanagh P.B, Fujino Y
    • Organizer
      ATS(American Thoracic Society)International Conference
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of ventilatory settings on a pendelluft phenomenon during mechanical ventilation -a lung model study-2016

    • Author(s)
      Y Enokidani, A Uchiyama, T Yoshida, Y Fujino
    • Organizer
      American Thoracic Society annual meeting
    • Place of Presentation
      San Francisco
    • Year and Date
      2016-05-13
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 大阪大学大学院医学系研究科 生体統御医学講座 麻酔集中治療医学教室

    • URL

      http://www.med.osaka-u.ac.jp/pub/anes/www/home.htm

    • Related Report
      2016 Annual Research Report

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Published: 2016-04-21   Modified: 2020-03-30  

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