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Establishment of minimally invasive, safe, and reliable bronchoscopy by various devices and anesthesia methods

Research Project

Project/Area Number 19K16966
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 52010:General internal medicine-related
Research InstitutionNational Cancer Center Japan (2021)
University of Occupational and Environmental Health, Japan (2019-2020)

Principal Investigator

Uchimura Keigo  国立研究開発法人国立がん研究センター, 中央病院, 医員 (00822553)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2021: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords気管支鏡 / 超音波内視鏡 / 肺癌 / 麻酔 / EBUS
Outline of Research at the Start

気管支鏡検査は呼吸器疾患の診療において不可欠であるが、診断率と合併症、患者の苦痛が問題となる。また、近年超音波内視鏡が普及しているが、穿刺針や生検鉗子の種類等、各デバイスが診断率に与える影響は不明な点が多い。国内外で検査時における鎮静剤の使用が推奨されているが、咽頭麻酔法の工夫による苦痛度評価の報告はない。我々は低侵襲で安全かつ苦痛の小さい気管支鏡検査(①気管支鏡検査の診断率向上に寄与する因子と合併症発症のリスク因子の探索、②超音波気管支鏡ガイド下針生検における最適な穿刺針の探索、③気管支鏡検査の低侵襲性を目指した麻酔・鎮静方法の確立)について研究を行う。

Outline of Final Research Achievements

We analyzed elastographic images of hilar and mediastinal lymph nodes without significant enlargement on CT, which may contribute to the diagnostic yield of endobronchial ultrasound-guided transbronchial needle aspiration(EBUS-TBNA), and found that even in lymph nodes without significant enlargement on CT, elastographic findings had a negative predictive value of more than 90%, suggesting that elastography may be a useful tool in the diagnosis. We had a presentation at a conference and our original paper was accepted for publication in an international journal. In order to minimize patient distress during bronchoscopy, it is necessary to use sedatives in combination with medical narcotics. In this study, it was considered that bronchoscopy could be performed as safely in patients over 75 years old as in those under 75 years old, if the indications for bronchoscopy were determined, including the patient's general condition.

Academic Significance and Societal Importance of the Research Achievements

超音波気管支鏡ガイド下針生検は多くの施設で局所麻酔下に行われるが、しばしば検査時間の長さが適切な検体採取を妨げる。リアルタイムに検査中にエラストグラフィ画像を評価し、対象リンパ節が悪性もしくは良性であるかを検討しながら、処置を行うことで、効率的な検体採取が可能になると考えられる。また、近年日本も高齢化が進んでいるが、本研究に75歳以上であっても75歳未満同様に鎮静薬と鎮咳薬の併用を行っても安全に気管支鏡検査が行えることが証明された。本研究は、低侵襲で安全かつ確実な気管支鏡検査法の確立に寄与することができたと考えられる。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (12 results)

All 2022 2021 2020

All Journal Article (7 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results,  Open Access: 6 results) Presentation (5 results) (of which Invited: 1 results)

  • [Journal Article] Intravascular Lymphoma Diagnosed by "Hot Lung" Sign2022

    • Author(s)
      Keigo Uchimura, Tatsuya Imabayashi, Yuji Matsumoto, Takaaki Tsuchida
    • Journal Title

      Internal Medicine

      Volume: 61 Issue: 5 Pages: 761-762

    • DOI

      10.2169/internalmedicine.8087-21

    • NAID

      130008165930

    • ISSN
      0918-2918, 1349-7235
    • Year and Date
      2022-03-01
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Clinical factors influencing infectious complications after endobronchial ultrasound-guided transbronchial needle aspiration2022

    • Author(s)
      Keigo Uchimura, Hideaki Furuse, Tatsuya Imabayashi, Yuji Matsumoto, Takaaki Tsuchida
    • Journal Title

      Lung Cancer

      Volume: - Pages: 106876-106876

    • DOI

      10.1016/j.lungcan.2021.11.019

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Emerald Sign for Diagnosing Tracheobronchial Amyloidosis2021

    • Author(s)
      Keigo Uchimura, Kazuki Nemoto, Taiki Manabe, Kazuhiro Yatera
    • Journal Title

      Internal Medicine

      Volume: 60 Issue: 16 Pages: 2703-2704

    • DOI

      10.2169/internalmedicine.6738-20

    • NAID

      130008074657

    • ISSN
      0918-2918, 1349-7235
    • Year and Date
      2021-08-15
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Impact of Core Tissues on Successful Next-Generation Sequencing Analysis of Specimens Obtained through Endobronchial Ultrasound-Guided Transbronchial Needle Aspiration2021

    • Author(s)
      Keigo Uchimura, Komei Yanase, Tatsuya Imabayashi, Yuki Takeyasu, Hideaki Furuse, Midori Tanaka, Yuji Matsumoto, Shinji Sasada, Takaaki Tsuchida
    • Journal Title

      Cancers (Basel)

      Volume: 13 Issue: 23 Pages: 5879-5879

    • DOI

      10.3390/cancers13235879

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Novel device to prevent droplets in bronchoscopy during the SARS-CoV-2 pandemic2021

    • Author(s)
      Keigo Uchimura, Kei Yamasaki, Toshinori Kawanami, Hideki Kanda, Hideki Sakakibara, Kazuhiro Yatera
    • Journal Title

      Thoracic Cancer

      Volume: 12 Issue: 1 Pages: 137-139

    • DOI

      10.1111/1759-7714.13729

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Influential Factors for Assessing Endobronchial Ultrasound Elastography2020

    • Author(s)
      Keigo Uchimura, Kei Yamasaki, Toshinori Kawanami, Kazuhiro Yatera
    • Journal Title

      Respiration

      Volume: 12 Issue: 12 Pages: 1154-1155

    • DOI

      10.1159/000510643

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Quantitative analysis of endobronchial ultrasound elastography in computed tomography-negative mediastinal and hilar lymph nodes2020

    • Author(s)
      Keigo Uchimura, Kei Yamasaki, Shinji Sasada, Sachika Hara, Issei Ikushima, Yosuke Chiba, Takashi Tachiwada, Toshinori Kawanami, Kazuhiro Yatera
    • Journal Title

      Thoracic Cancer

      Volume: 9 Issue: 9 Pages: 2590-2599

    • DOI

      10.1111/1759-7714.13579

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 胸部CTで短径1cm未満のリンパ節におけるEBUSエラストグラフィの定量分析-既往歴・職業歴を含めた検討2022

    • Author(s)
      内村圭吾、山﨑啓、笹田真滋、赤池幸歌、生嶋一成、千葉要祐、立和田隆、川波敏則、矢寺和博
    • Organizer
      第45回日本呼吸器内視鏡学会学術集会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 胸部CTで短径1cm未満のリンパ節におけるEBUSエラストグラフィの定量分析 既往歴・職業歴を含めた検討2021

    • Author(s)
      内村圭吾、山﨑啓、笹田真滋、赤池幸歌、生嶋一成、千葉要祐、立和田隆、川波敏則、矢寺和博
    • Organizer
      第44回日本呼吸器内視鏡学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 胸部CTで短径1cm未満のリンパ節におけるEBUSエラストグラフィの定量分析-既往歴・職業歴を含めた検討2021

    • Author(s)
      内村圭吾,山﨑啓,笹田真滋,赤池幸歌,生嶋一成,千葉要祐,立和田隆,川波敏則,矢寺和博
    • Organizer
      第44回日本呼吸器内視鏡学会学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] 高齢者への気管支鏡検査における ミダゾラム・塩酸ペチジン併用鎮静法の安全性の検討2020

    • Author(s)
      内村圭吾,原幸歌,神田英樹,榊原秀樹,立和田隆,山﨑啓,川波敏則,矢寺和博
    • Organizer
      第61回日本呼吸器学会学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] 高齢者への気管支鏡検査における ミダゾラム・塩酸ペチジン併用鎮静法の安全性の検討2020

    • Author(s)
      内村圭吾、原幸歌、神田英樹、榊原秀樹、立和田隆、山﨑啓、川波敏則、矢寺和博
    • Organizer
      第60回日本呼吸器学会学術講演会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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