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Development of new hemodynamic variables using machine learning.

Research Project

Project/Area Number 20K09296
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55060:Emergency medicine-related
Research InstitutionNippon Medical School

Principal Investigator

Tagami Takashi  日本医科大学, 医学部, 准教授 (40626272)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords経肺熱希釈法 / DPCデータ / 心拍変動
Outline of Research at the Start

本臨床研究では、臨床情報に加え、経肺熱希釈法曲線と同時刻に記録された心電図の心拍変動変数データを紐付けた上で、それらを機械学習・深層学習で解析し、新たな病態生理の解明及び治療転帰や予後予測につながる新しい循環呼吸パラメータモデルの開発に挑戦する。
将来、心電図モニターを使用すると、経肺熱希釈法の連続心拍出量測定装置を実際には用いなくても、心拍変動変数のパラメータから精確なイベント予測(急変や患者予後予測)などが出来るようになる可能性がある。

Outline of Final Research Achievements

Heart rate and its variability (HRV) are reported to be associated with the activity of the autonomic nervous system. Additionally, the relationship between heart rate variability and respiratory states, such as cardiac function, stroke volume, changes in vascular permeability, and pulmonary edema, has been suggested but not clearly understood. In this study, we aimed to develop a new circulatory and respiratory parameter model that can provide insights into novel pathophysiology, aid in treatment response prediction, and contribute to prognosis. We integrated clinical information, transpulmonary thermodilution curves, and heart rate variability data, utilizing machine learning and deep learning analysis. To facilitate data collection and integration of clinical information, we developed an application. We then validated our hypotheses using machine learning and other techniques. Our findings are currently being prepared for publication.

Academic Significance and Societal Importance of the Research Achievements

これまで申請者は、経肺熱希釈法循環動態モニターから算出される、心拍出量や心臓張末期容量、肺血管外水分量や肺血管透過性係数等の循環呼吸動態のパラメータの妥性研究を 多く行ってきた。また、心電図モニターから算出される心拍変動(Heart Rate Variability, HRV)は、自律神経系の活動も反映し、敗血症や外傷症例の転帰を予測し得ることも発表してきた。しかし、これら別モニターの相互関係や組み合わせによる病態生理学的意義や転 予後予測に関しては、明らかになっていなかった。本研究は、上記の2つの関連の可能性を明らかにした。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (1 results)

All 2022

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results)

  • [Journal Article] Japanese Multicenter Research of COVID-19 by Assembling Real-world Data: A Study Protocol2022

    • Author(s)
      Tagami Takashi、Yamakawa Kazuma、Endo Akira、Hayakawa Mineji、Ogura Takayuki、Hirayama Atsushi、Yasunaga Hideo
    • Journal Title

      Annals of Clinical Epidemiology

      Volume: 4 Issue: 3 Pages: 92-100

    • DOI

      10.37737/ace.22012

    • ISSN
      2434-4338
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

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