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Epidemiology of Adverse Event in Elderly Patients

Research Project

Project/Area Number 20K07839
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52010:General internal medicine-related
Research InstitutionDepartment of Clinical Research, National Hospital Organization Kyoto Medical Center (2023-2024)
Hyogo Medical University (2020-2022)

Principal Investigator

Ohta Yoshinori  独立行政法人国立病院機構(京都医療センター臨床研究センター), 臨床研究企画運営部, 研究員 (10516404)

Co-Investigator(Kenkyū-buntansha) 森本 剛  兵庫医科大学, 医学部, 教授 (30378640)
作間 未織  兵庫医科大学, 医学部, 准教授 (60349587)
Project Period (FY) 2020-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords医療の質 / 臨床疫学研究 / 医原性有害事象研究 / 高齢者 / 医療・福祉 / 医原性有害事象
Outline of Research at the Start

高齢者を対象とした周術期を含む入院診療中の医原性有害事象並びにエラーを網羅的に評価した臨床疫学研究は、世界的にも類を見ない。高齢者は多種類の薬剤投与に加えて、全身臓器の機能低下の併存が認められ、医原性有害事象を発症しやすいという背景がある。高齢者の医療需要が高まる中、医療の質の向上のためには、周術期を含めた医原性有害事象並びにエラーの分析、検討が不可欠である。本研究では、本邦の高齢者の医原性有害事象並びにエラーの現状、これらが転帰に及ぼす影響を明らかにする。これにより、本邦の高齢者診療における治療成績向上や、健康寿命の延長並びに安全対策の推進に貢献する。

Outline of Final Research Achievements

To evaluate the epidemiology of adverse events (AEs) in elderly patients aged 65 years and older, we conducted a multicenter cohort study, the Japan Adverse Event Study.
A total of 704 patients were included, and 831 AEs were identified.Among all AEs, the most frequent type of medical care involved was drug therapy, accounting for 41% (344/831), followed by diagnostic examinations and procedures (149, 18%), surgery (132, 16%), and nursing care (126, 15%). Among the 443 patients who were discharged to their homes, 168 experienced AEs (38%). In contrast, among the 261 patients who were discharged to facilities other than their homes, 150 experienced AEs (57%), which was significantly higher (P < .0001).
These findings suggest that elderly patients who experience AEs are less likely to be discharged to their homes.

Academic Significance and Societal Importance of the Research Achievements

高齢者に発生する医原性有害事象は、死亡や重篤な健康被害を引き起こすことが少なくない。さらに、中等度あるいは軽微な健康被害であっても、フレイル状態から要介護状態への移行を促す可能性がある。本研究では、高齢者を対象に質の高い臨床疫学研究を実施し、医原性有害事象の詳細を明らかにした。加えて、これらの事象を経験した高齢者では、自宅への退院率が有意に低下することを示した。
医原性有害事象の効果的な予防策を講じるため、その特徴を詳細に分析し、原因別および重症度別の発生割合を提示した。今後は、高齢者における医原性有害事象の発生を低減するため、具体的な介入方法の開発に向けたさらなる研究が求められる。

Report

(6 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (18 results)

All 2025 2024 2023 2022 2021 2020

All Journal Article (13 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 13 results,  Open Access: 13 results) Presentation (5 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Time to administer polymyxin B hemoperfusion and hemodynamics in patients with septic shock requiring high-dose norepinephrine: a predetermined analysis of a prospective cohort study.2025

    • Author(s)
      Miyamoto K, Kawazoe Y, Miyagawa N, Yamamura H, Ohta Y, Kimura T, Toyoda Y, Kyo M, Sato T, Kinjo M, Takahashi M, Maruyama J, Matsuura H, Fukushima K, Murata S, Okazaki T, Suzuki T, Sakurai T, Takahashi G, Hanajima T, Morimoto T.
    • Journal Title

      Crit Care.

      Volume: 29(1) Issue: 1 Pages: 187-187

    • DOI

      10.1186/s13054-025-05422-7

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Adverse Events in Pediatric Inpatients: The Japan Adverse Event Study2024

    • Author(s)
      Sakuma Mio、Ohta Yoshinori、Takeuchi Jiro、Yuza Yuki、Ida Hiroyuki、Bates David W.、Morimoto Takeshi
    • Journal Title

      Journal of Patient Safety

      Volume: 20 Issue: 1 Pages: 38-44

    • DOI

      10.1097/pts.0000000000001180

    • Related Report
      2024 Annual Research Report 2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Monitoring for adverse drug events of high-risk medications with a computerized clinical decision support system: a prospective cohort study2023

    • Author(s)
      Nezu Mari、Sakuma Mio、Nakamura Tsukasa、Sonoyama Tomohiro、Matsumoto Chisa、Takeuchi Jiro、Ohta Yoshinori、Kosaka Shinji、Morimoto Takeshi
    • Journal Title

      International Journal for Quality in Health Care

      Volume: 35 Issue: 4

    • DOI

      10.1093/intqhc/mzad095

    • Related Report
      2023 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effectiveness of a computerized clinical decision support system for prevention of glucocorticoid-induced osteoporosis2022

    • Author(s)
      Morikawa Toru、Sakuma Mio、Nakamura Tsukasa、Sonoyama Tomohiro、Matsumoto Chisa、Takeuchi Jiro、Ohta Yoshinori、Kosaka Shinji、Morimoto Takeshi
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 14967-14967

    • DOI

      10.1038/s41598-022-19079-7

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of Gram Stain-Guided Initial Antibiotic Therapy on Clinical Response in Patients With Ventilator-Associated Pneumonia:The GRACE-VAP Randomized Clinical Trial2022

    • Author(s)
      Yoshimura Jumpei、Yamakawa Kazuma、Ohta Yoshinori、Nakamura Kensuke、Hashimoto Hideki、Kawada Masahiro、Takahashi Hiroki、Yamagiwa Takeshi、Kodate Akira、Miyamoto Kyohei、Fujimi Satoshi、Morimoto Takeshi
    • Journal Title

      JAMA Network Open

      Volume: 5 Issue: 4 Pages: e226136-e226136

    • DOI

      10.1001/jamanetworkopen.2022.6136

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comparison between midazolam and propofol in acute phase for ventilated patients with sepsis: a post‐hoc analysis of the DESIRE trial2022

    • Author(s)
      Miyagawa Noriko、Kawazoe Yu、Sato Tetsuya、Kushimoto Shigeki、Miyamoto Kyohei、Ohta Yoshinori、Morimoto Takeshi、Yamamura Hitoshi、DESIRE Trial Investigators
    • Journal Title

      Acute Medicine & Surgery

      Volume: 9 Issue: 1

    • DOI

      10.1002/ams2.746

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Differences in adverse drug events and medication errors among pediatric inpatients aged <3 and ≧3 years: The JADE study2021

    • Author(s)
      Takeuchi Jiro、Sakuma Mio、Ohta Yoshinori、Ida Hiroyuki、Morimoto Takeshi
    • Journal Title

      Journal of Patient Safety and Risk Management

      Volume: 26 Issue: 6 Pages: 261-266

    • DOI

      10.1177/25160435211046764

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of age on dexmedetomidine treatment for ventilated patients with sepsis: a post‐hoc analysis of the DESIRE trial2021

    • Author(s)
      Sato Tetsuya、Kawazoe Yu、Miyagawa Noriko、Yokokawa Yuta、Kushimoto Shigeki、Miyamoto Kyohei、Ohta Yoshinori、Morimoto Takeshi、Yamamura Hitoshi
    • Journal Title

      Acute Medicine & Surgery

      Volume: 8 Issue: 1

    • DOI

      10.1002/ams2.644

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of dexmedetomidine on inflammation in patients with sepsis requiring mechanical ventilation: a sub-analysis of a multicenter randomized clinical trial2020

    • Author(s)
      Ohta Yoshinori、Miyamoto Kyohei、Kawazoe Yu、Yamamura Hitoshi、Morimoto Takeshi
    • Journal Title

      Critical Care

      Volume: 24 Issue: 1 Pages: 493-493

    • DOI

      10.1186/s13054-020-03207-8

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Clinical Decision Support System with Renal Dose Adjustment Did Not Improve Subsequent Renal and Hepatic Function among Inpatients: The Japan Adverse Drug Event Study2020

    • Author(s)
      Wada Ryuhei、Takeuchi Jiro、Nakamura Tsukasa、Sonoyama Tomohiro、Kosaka Shinji、Matsumoto Chisa、Sakuma Mio、Ohta Yoshinori、Morimoto Takeshi
    • Journal Title

      Applied Clinical Informatics

      Volume: 11 Issue: 05 Pages: 846-856

    • DOI

      10.1055/s-0040-1721056

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Utility of a prediction model for delirium in intensive care unit patients (PRE‐DELIRIC) in mechanically ventilated patients with sepsis2020

    • Author(s)
      Miyamoto Kyohei、Nakashima Tsuyoshi、Shima Nozomu、Kato Seiya、Kawazoe Yu、Morimoto Takeshi、Ohta Yoshinori、Yamamura Hitoshi、DESIRE Trial Investigators
    • Journal Title

      Acute Medicine & Surgery

      Volume: 7 Issue: 1

    • DOI

      10.1002/ams2.589

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Incidence, risk factors, and outcomes for sepsis-associated delirium in patients with mechanical ventilation: A sub-analysis of a multicenter randomized controlled trial.2020

    • Author(s)
      Yamamoto T, Mizobata Y, Kawazoe Y, Miyamoto K, Ohta Y, Morimoto T, Yamamura H.
    • Journal Title

      Journal of Critical Care

      Volume: 56 Pages: 140-144

    • DOI

      10.1016/j.jcrc.2019.12.018

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Adverse Drug Events due to Central Nervous System Depressant Drugs in Pediatric Patients With or Without Surgery2020

    • Author(s)
      Yamamoto Marumi、Ohta Yoshinori、Sakuma Mio、Matsumoto Chisa、Morimoto Takeshi
    • Journal Title

      The Journal of Pediatric Pharmacology and Therapeutics

      Volume: 25 Issue: 4 Pages: 295-302

    • DOI

      10.5863/1551-6776-25.4.295

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] ショック患者に対するノルアドレナリン投与経路の変遷2024

    • Author(s)
      吉田浩輔、太田好紀、藤沢聖哉、元濱啓介、日垣太希、橋本賢吾、増永直久、村田真紀、田中博之、趙晃済
    • Organizer
      第52回日本集中治療医学会学術集会
    • Related Report
      2024 Annual Research Report
  • [Presentation] The Incidence and characteristics of adverse events in pediatric inpatients in Japan: The JET Study2022

    • Author(s)
      Sakuma Mio、Takeuchi Jiro、Ohta Yoshinori、Morimoto Takeshi
    • Organizer
      38th International Conference of the International Society for Quality in Health Care
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] The Epidemiology of unidentified adverse events in Japan: The JET Study2022

    • Author(s)
      Ohta Yoshinori、Sakuma Mio、Nakamura Tsukasa、Morimoto Takeshi
    • Organizer
      38th International Conference of the International Society for Quality in Health Care
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 主要臨床医学雑誌への挑戦2021

    • Author(s)
      太田好紀
    • Organizer
      第48回日本集中治療医学会学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] Pragmatic trialで創出する集中治療におけるエビデンス2021

    • Author(s)
      吉村旬平,山川一馬,太田好紀,藤見聡,森本剛
    • Organizer
      第48回日本集中治療医学会学術集会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2026-01-16  

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