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Ken Yamaura Last modified date：2023.01.25

Professor / Surgery
Department of Clinical Medicine
Faculty of Medical Sciences


Undergraduate School
Department of Medicine
School of Medicine


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Homepage
https://kyushu-u.pure.elsevier.com/en/persons/ken-yamaura
　Reseacher Profiling Tool　Kyushu University Pure
https://www.kuaccm.med.kyushu-u.ac.jp/
Department of Anesthesiology and Critical Care Medicine, Graduate School of Medical Sciences, Kyushu University .
Academic Degree
Medical Doctor
Country of degree conferring institution (Overseas)
Yes　Doctor
Field of Specialization
Anesthesia
ORCID(Open Researcher and Contributor ID)
0000-0001-9392-1746
Total Priod of education and research career in the foreign country
02years00months
Outline Activities
Cardiovascular Anesthesia
Research
Research Interests
  • Anesthetic management in patients with left ventricular dysfunction
    keyword : LV diastolic function, anesthesia
    2012.04～2020.03.
  • Neuropathic pain
    keyword : neuropathic pain
    2012.04～2025.03.
  • postoperative cognitive dysfunction
    keyword : surgery anesthesia cognitive dysfunction
    2014.04～2025.03.
  • Circulation and coagulation control during operative period
    keyword : Circulation coagulation Anesthesia
    2010.04～2011.05.
  • Evaluation of the perioperative cardiac function using transesophageal echocardiaography
    keyword : Transesophageal echocardiography cardiac function perioperqative
    1996.04～2010.03Evaluation of cardiac function using transesophageal echocardiography.
Academic Activities
Books
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Reports
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Papers
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1. Midoriko Higashi, Kenji Shigematsu, Kenji Tominaga, Kazuya Murayama, Daisuke Seo, Toshikazu Tsuda, Gen Maruta, Kohei Iwashita, Ken Yamaura, Preoperative elevated E/e' (≥ 15) with preserved ejection fraction is associated with the development of postoperative heart failure in intermediate-risk non-cardiac surgical patients., Journal of anesthesia, 10.1007/s00540-019-02728-z, 34, 2, 250-256, 2020.04, PURPOSE: Left ventricular diastolic dysfunction is an independent risk factor for adverse cardiovascular morbidities and mortalities in cardiovascular and high-risk surgical patients. However, there were only a few investigations among intermediate-risk surgical patients. This study aimed to investigate postoperative heart failure (HF) in intermediate-risk surgical patients who had preoperative diastolic dysfunction with preserved ejection fraction (EF). METHODS: Consecutive patients underwent intermediate-risk surgery between January 2016 and December 2018 were retrospectively evaluated. Patients with preserved EF were divided into three groups using one of the parameters of diastolic function: the ratio of early diastolic filling velocity to the peak diastolic velocity of mitral medial annulus (E/e') ≥ 15, E/e' between 8 and 15, and E/e' < 8. Postoperative HF was defined as clinical symptoms and radiological evidence and low SpO2 less than 93%. The primary outcome was the incidence of postoperative HF and its relation to preoperative E/e'. Chi-squared test, unpaired t test with Welch's correction, and multivariate logistic regression were used for analysis. RESULTS: In total, 965 patients were included in the final analysis. Postoperative HF developed in 36/965 (3.7%) patients with preserved EF. The incidence of postoperative HF was stratified according to the E/e', and the rates of HF occurrence in patients with E/e' < 8, 8-15, and ≥ 15 were 1.8%, 2.7%, and 15%, respectively (P < 0.01). CONCLUSION: Preoperative elevated E/e' (≥ 15) was associated with the development of postoperative HF in intermediate-risk surgical patients with preserved EF..
Presentations
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Membership in Academic Society
  • American Society of Anesthesiologists
  • Japanese Society od Medical Instrumentation
  • Japan Association for Perinatal Anestheisolgy
  • 日本麻酔科学会
  • 日本集中治療医学会
  • 日本蘇生学会
  • 日本老年麻酔学会
  • 日本神経麻酔集中治療学会
  • 日本手術医学会
  • 日本心臓血管麻酔学会
  • 日本循環制御医学会
  • 日本区域麻酔学会
  • 日本ペインクリニック学会
  • The Japan Society for Clinical Anesthesia
  • Japanese Society of Medical Instrumentation
  • Japan Society for Obstetric Anesthesia and Perinatology
  • EUROPEAN SOCIETY OF ANAESTHESIOLOGY AND INTENSIVE CARE
  • American Society of Anesthesiologist
Educational
Educational Activities
Clinical Cardiovascular Anesthesia


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