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Development of mattress hardness and learning model effective for pressure ulcer prevention in prone position surgery using stress analysis

Research Project

Project/Area Number 21K17361
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 58060:Clinical nursing-related
Research InstitutionFukui Prefectural University

Principal Investigator

Kumagai Ayumi  福井県立大学, 看護福祉学部, 准教授 (30843916)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2023: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords褥瘡予防 / 腹臥位 / 皮膚軟部組織変形 / 体圧 / マットレス / 硬さ / 皮膚軟部組織 / 変形予測 / マットレス硬さ / 応力解析 / 学習モデル
Outline of Research at the Start

手術体位別褥瘡発生率は、腹臥位が一番高い。そのため、腹臥位手術の褥瘡予防に有効なマットレスを検討する。
褥瘡は骨突出部の皮膚軟部組織に高い外力が加わり、皮膚軟部組織が変形して発生する。これまでの自身の研究をもとに、マットレスの硬さに着目した。硬さの異なるマットレス上に腹臥位となり、外力が加わった皮膚軟部組織の変形の違いを、有限要素モデルによる応力解析を用いて解明する。そして、体型別に皮膚軟部組織の応力、ひずみ、変位が小さい褥瘡予防に有効なマットレスの硬さを明らかにする。さらに、応力解析データを構築し、患者個々の体型に応じたマットレスの硬さを提案するための機械学習モデルを開発する。

Outline of Final Research Achievements

This study clarified the hardness of mattresses that can effectively prevent pressure ulcers when lying in the prone position. Subsequently, the predictors of skin and soft tissue deformation of this hardness were identified based on external force applied in the prone position and physiological factors.
The hardness of mattresses that can effectively prevent pressure ulcers was 87.5 N and 175 N. The distance between the left and right greater trochanters, maximum interface pressure, and age were the significant predictors of skin and soft tissue compression. Furthermore, the distances between the left and right anterior superior iliac spines and greater trochanters were the significant predictors of internal soft tissue displacement. Meanwhile, no factors predicted skin surface displacement.

Academic Significance and Societal Importance of the Research Achievements

これまで、腹臥位で褥瘡予防に有効な硬さを明らかにした検討はなかった。また、腹臥位で皮膚軟部組織変形の予測因子を特定した検討もなかった。そのため、本研究は新規性がある。
臨床で簡便に使用できるこの皮膚軟部組織変形の予測モデルの活用が期待でき、腹臥位手術の褥瘡予防に貢献できると考える。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (5 results)

All 2024 2023 2022 2021

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 1 results) Presentation (3 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Prediction of tissue deformation based on mechanical and physiological factors in the prone position during surgery2024

    • Author(s)
      Kumagai Ayumi、Ohno Naoki、Miyati Tosiaki、Sugama Junko
    • Journal Title

      Journal of Tissue Viability

      Volume: - Issue: 2 Pages: 312-317

    • DOI

      10.1016/j.jtv.2024.02.004

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development of evaluation method of pressure redistribution function of pressure distribution mattress: Examination of magnetic resonance image method for visualizing deformation of urethane foam mattress2022

    • Author(s)
      熊谷 あゆ美、大野 直樹、須釜 淳子
    • Journal Title

      Journal of Nursing Science and Engineering

      Volume: 9 Issue: 0 Pages: 136-142

    • DOI

      10.24462/jnse.9.0_136

    • NAID

      130008165174

    • ISSN
      2188-4323, 2432-6283
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 腹臥位における腸骨部の皮膚に加わる外力と皮膚軟部組織変形の検討2023

    • Author(s)
      熊谷あゆ美, 須釜淳子
    • Organizer
      第11回看護理工学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 腹臥位手術における褥瘡予防のためのマットレスの硬さと圧力やずれ力の関係2022

    • Author(s)
      熊谷あゆ美
    • Organizer
      第52回日本創傷治癒学会
    • Related Report
      2022 Research-status Report
  • [Presentation] .Investigation of the effects of mattress shape and hardness on mattress deformation in prone position using magnetic resonance imaging2021

    • Author(s)
      Ayumi Kumagai, Junko Sugama
    • Organizer
      The 9th Asia Pacific Enterostomal Therapy Nurse Association Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research

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Published: 2021-04-28   Modified: 2025-01-30  

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