• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

echanical thrombectomy in acute ischemic stroke patients with a left ventricular assist device

Research Project

Project/Area Number 19K20729
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 90140:Medical technology assessment-related
Research InstitutionOsaka University

Principal Investigator

KITANO TAKAYA  大阪大学, 医学系研究科, 招へい教員 (70772193)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords血栓 / 人工心臓 / 脳卒中 / 脳梗塞 / 塞栓 / 血栓回収 / 再開通 / 線溶 / 心移植 / LVAD / 心不全 / 病理
Outline of Research at the Start

左室補助人工心臓(LVAD)の開発により重症心不全患者の予後は改善し、LVAD装着患者数は増加の一途にある。一方で深刻な合併症である脳梗塞の増加が喫緊の課題となっているが、有効な治療法は確立していない。脳梗塞超急性期治療として経カテーテル的脳血栓回収術の有用性が期待されているが、LVAD患者特有の手技の難しさや周術期合併症が問題となる。そこで本研究は、LVAD関連脳梗塞に対する最適な急性期治療法の確立を目的として、①多施設共同レジストリの構築、②症例対照研究、③血栓病理・脳画像解析による検討を行う。

Outline of Final Research Achievements

As the number of patients with left ventricular assist device (LVAD) implantation has been increasing, treatment of LVAD-related ischemic stroke is becoming a critical issue. We sought to clarify the features of mechanical thrombectomy in LVAD-related stroke with large vessel occlusion. In a multi-center, retrospective case-control study, we compared 20 LVAD-related strokes with 33 non-LVAD strokes, all of which had large vessel occlusion in anterior circulation treated with mechanical thrombectomy. A comparative histopathological examination of the retrieved thrombi was also performed. Mechanical thrombectomy is feasible in patients with LVAD-related stroke. However, repetitive device passes is needed to achieve successful reperfusion mainly because of the structurally organized thrombi, and the higher risk of hemorrhagic complications should be considered, while offering this therapeutic alternative.

Academic Significance and Societal Importance of the Research Achievements

臓器移植の限られている本邦において、人工心臓は重症心不全において非常に重要な治療法の一つである。一方で、人工心臓装着患者は脳梗塞を発症するリスクが高く、脳梗塞後遺症が問題となっていた。近年、脳梗塞の治療法としてカテーテルを用いて血栓を脳血管から取り除く血栓回収術が可能となった。人工心臓を装着していても安全にこの治療を行うことが出来るのかは明らかでなかったため、本研究はこれまでの最大の症例数を集めて解析し、人工心臓装着患者でも血栓回収術が有用なことを示した。ただし、一般の患者よりもLVAD装着患者では周術期の出血性合併症が多く、慎重な治療を要することも明らかとなった。

Report

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

    (6 results)

All 2021 2020 2019

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (4 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results)

  • [Journal Article] An Older Thrombus Delays Reperfusion after Mechanical Thrombectomy for Ischemic Stroke2021

    • Author(s)
      Kitano Takaya、Hori Yumiko、Okazaki Shuhei、Murayama Shigeo、Morii Eiichi、Sakaguchi Manabu、Yagita Yoshiki、Shimazu Takeshi、Mochizuki Hideki、Todo Kenichi
    • Journal Title

      Thrombosis and Haemostasis

      Volume: 122 Issue: 03 Pages: 415-426

    • DOI

      10.1055/a-1522-4507

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Mechanical thrombectomy in acute ischemic stroke patients with left ventricular assist device2020

    • Author(s)
      Kitano Takaya、Sakaguchi Manabu、Yamagami Hiroshi、Ishikawa Tatsuya、Ishibashi-Ueda Hatsue et al.
    • Journal Title

      Journal of the Neurological Sciences

      Volume: 418 Pages: 117142-117142

    • DOI

      10.1016/j.jns.2020.117142

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] An Older Thrombus Delays Reperfusion in Mechanical Thrombectomy for Ischemic Stroke2021

    • Author(s)
      Kitano Takaya、Hori Yumiko、Shimada Yuki、Iwamoto Takanori、Okazaki Shuhei、Nakamura Hajime、Kanki Hideaki、Sasaki Tsutomu、Beck Goichi、Kishima Haruhiko、Murayama Shigeo、Morii Eiichi、Sakaguchi Manabu、Yagita Yoshiki、Mochizuki Hideki、Todo Kenichi
    • Organizer
      International Stroke Conference 2021
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Mechanical thrombectomy in acute ischemic stroke patients with a left ventricular assist device: A multicenter study2019

    • Author(s)
      Takaya Kitano, Kenichi Todo, et al.
    • Organizer
      European Stroke Organization Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 左室補助人工心臓装着患者における脳血栓回収術の有効性と安全性の検討-血栓病理 に着目して2019

    • Author(s)
      北野貴也 藤堂謙一 岡崎周平 佐々木勉 角野喜則 高垣匡寿 西田武生 中村元 貴島晴彦 望月秀樹
    • Organizer
      日本脳卒中学会学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] LVAD装着患者における脳血栓回収術2019

    • Author(s)
      北野貴也 坂口学 山上宏 植田初枝 岡崎周平 石川達也 川俣貴一 福嶌敎偉 簗瀨正伸 吉岡大輔 戸田宏一 澤芳樹 中村元 貴島晴彦 望月秀樹 藤堂謙一
    • Organizer
      日本臨床補助人工心臓研究会
    • Related Report
      2019 Research-status Report
    • Invited

URL: 

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

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi