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Research Aiming at the Development of Cardiac Resynchronization Therapy for Single Ventricles: Elucidation of the Conduction System Using Phase-Contrast X-ray CT

Research Project

Project/Area Number 21K08818
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55030:Cardiovascular surgery-related
Research InstitutionNiigata University

Principal Investigator

Shuichi Shiraishi  新潟大学, 医歯学系, 准教授 (00422600)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords単心室 / 位相差X線CT / 刺激伝導系 / 心臓再同期療法 / 複雑心奇形
Outline of Research at the Start

単心室疾患群は経時的な心機能低下に伴う心不全死が問題となることが多く、未だ確立した治療法はない。
CRT(心臓再同期療法)は心室同期障害が原因で低下した心機能を改善させる治療法であるが、単心室疾患群への適応は少なく、疾患ごとの至適なペーシング部位も明らかではない。
本研究の目的は、①単心室疾患群の刺激伝導系の走行の解明、②至適なCRTのペーシング部位の決定と検証である。研究方法は、単心室の心標本から位相差X線CTを用いて刺激伝導系を3次元的に描出しCRTの至適な装着部位を推定する。さらに手術時にペーシングを行い、経食道心エコーを用いた組織ドップラー法による心室壁運動と体・肺血流量の変化を観察する。

Outline of Final Research Achievements

We examined five human heart specimens with tricuspid atresia using phase-contrast X-ray CT with synchrotron radiation and created three-dimensional models for analysis. The median distance to the mitral valve annulus was 2.0 mm. In four autopsied hearts with normal great vessel relationships, the AV conduction axis was located below the commissure between the left and non-coronary cusps of the aortic valve, extending to the nadir of the non-coronary cusp.

There was a negative correlation between 3D EF and BNP, and the 3D EF in ccTGA was lower than that in the normal control group. It is necessary to adjust the lead position to support three-dimensional pacing. Pacing of the dorsal part of the right ventricular inflow tract and the anterior part of the right ventricular outflow tract, covering the right ventricle in both the longitudinal and anteroposterior directions, was effective.

Academic Significance and Societal Importance of the Research Achievements

これまで詳細が不明であった三尖弁閉鎖をはじめとした単心室疾患群の刺激伝導系が位相差X線CTにより詳細に描出され、3次元構築したモデルが作成されたことにより心臓再同期療法への可能性が広がっただけでなく、大動脈弁輪拡大術式の選択にも応用が可能となる。
開胸手術の際の心外膜電極の位置変更による心室壁運動の変化が組織ドップラー法などにより詳細に観察されたことにより、単心室疾患群へのより有効な心臓再同期療法が行い得る。

Report

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

    (25 results)

All 2024 2023 2022 2021

All Journal Article (11 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 11 results,  Open Access: 4 results) Presentation (14 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] Agitated saline test as a simple but reliable method of intraoperative diagnosis and evaluation of unroofed coronary sinus2024

    • Author(s)
      Yamamoto Tomohiro、Yamada Teppei、Seino Yutaka、Hayama Kyo、Shiraishi Shuichi
    • Journal Title

      JA Clinical Reports

      Volume: 10 Issue: 1 Pages: 28-28

    • DOI

      10.1186/s40981-024-00709-0

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Outcomes of thoracic endovascular aortic repair using fenestrated stent grafts in patients with thoracic aortic distal arch aneurysms2024

    • Author(s)
      Okamoto Takeshi、Yokoi Yoshihiko、Sato Noriaki、Suzuki Shuhei、Enomoto Takashi、Onishi Ryo、Nakamura Norihito、Okubo Yuka、Nagasawa Ayako、Mishima Takehito、Shiraishi Shuichi、Tsuchida Masanori
    • Journal Title

      European Journal of Cardio-Thoracic Surgery

      Volume: 65 Issue: 3

    • DOI

      10.1093/ejcts/ezae062

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Surgical outcomes of the systemic-to-pulmonary artery shunt: risk factors of post-operative acute events and effectiveness of regulation of pulmonary blood flow with metal clips2024

    • Author(s)
      Shiraishi Shuichi、Watanabe Maya、Sugimoto Ai、Tsuchida Masanori
    • Journal Title

      General Thoracic and Cardiovascular Surgery

      Volume: 13 Issue: 11 Pages: 710-717

    • DOI

      10.1007/s11748-024-02028-8

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effect of procedural volume on the outcomes of congenital heart surgery in Japan2023

    • Author(s)
      Naoki Yoshimura , Yasutaka Hirata , Ryo Inuzuka , Hisateru Tachimori , Akinori Hirano , Takahisa Sakurai , Shuichi Shiraishi , Hikoro Matsui , Mamoru Ayusawa , Toshihide Nakano , Shingo Kasahara , Yuji Hiramatsu , Masaaki Yamagishi , Hiroaki Miyata , Hiroyuki Yamagishi , Kisaburo Sakamoto.
    • Journal Title

      J Thorac Cardiovasc Surg

      Volume: 4 Issue: 4 Pages: 1541-1550

    • DOI

      10.1016/j.jtcvs.2022.06.009

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] ファロー四徴症/肺動脈弁欠損,cervical arch,単一冠動脈を合併した低出生体重児に対する外科治療の1例2023

    • Author(s)
      羽山 響, 白石 修一, 渡邉 マヤ, 杉本 愛, 土田 正則
    • Journal Title

      日本心臓血管外科学会雑誌

      Volume: 52 Pages: 305-309

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 肺動脈弁逆流を伴う新生児重症Ebstein病に対してStarnes手術変法を行った2例2023

    • Author(s)
      高橋 利典, 白石 修一, 渡邉 マヤ, 杉本 愛, 土田 正則
    • Journal Title

      日本心臓血管外科学会雑誌

      Volume: 52(4) Pages: 216-220

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Contemporary surgical management of complete atrioventricular septal defect with tetralogy of Fallot in Japan2022

    • Author(s)
      Sugimoto Ai、Tachimori Hisateru、Hirata Yasutaka、Sakamoto Kisaburo、Ota Noritaka、Shiraishi Shuichi、Tsuchida Masanori、Motomura Noboru
    • Journal Title

      General Thoracic and Cardiovascular Surgery

      Volume: - Issue: 10 Pages: 835-841

    • DOI

      10.1007/s11748-022-01809-3

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Valve-sparing aortic root replacement and aortic valve repair for a 2-year-old girl with Loeys?Dietz syndrome2021

    • Author(s)
      Shiraishi Shuichi、Okita Yutaka、Watanabe Maya、Tsuchida Masanori
    • Journal Title

      Interactive CardioVascular and Thoracic Surgery

      Volume: - Issue: 6 Pages: 1174-1176

    • DOI

      10.1093/icvts/ivab367

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ensure an “Ultrasound Window” on the Patient's Neck to Evaluate Cerebral Blood Flow!2021

    • Author(s)
      Yamamoto Tomohiro、Mishima Takehito、Shiraishi Shuichi、Saito Takeshi、Schindler Ehrenfried
    • Journal Title

      The Thoracic and Cardiovascular Surgeon

      Volume: 70 Issue: 01 Pages: 050-055

    • DOI

      10.1055/s-0041-1725181

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] ファロー四徴症の心内修復術後遠隔期・肺動脈弁置換術2 年後に,肺うっ血をきたし,食塩水負荷試験で容量負荷への脆弱性を確認した心室拡張障害の一例2021

    • Author(s)
      柏村 健,武田 ルイ,西田 耕太,林 由香,白石 修一, 阿部 忠朗,沼野 藤人,田中 智美,木村 新平,加瀬 真弓, 酒井 亮平,久保田 直樹,髙野 俊樹,大久保 健志, 保屋野 真,栁川 貴央,尾崎 和幸,土田 正則,南野 徹
    • Journal Title

      日本成人先天性心疾患学会雑誌

      Volume: 10 Pages: 14-19

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] 体肺側副血管と肺動脈の塞栓後に開窓作成術を行い中心静脈圧の低下が得られた肺静脈閉塞を合併したFailing Fontanの一例2021

    • Author(s)
      馬場恵史,阿部忠朗,塚田正範,小澤淳一,杉本愛,沼野藤人,白石修一,齋藤昭彦
    • Journal Title

      日本小児循環器学会雑誌

      Volume: 37 Pages: 320-328

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 最近のTCPC conversion術後中期成績2024

    • Author(s)
      白石修一、渡邉マヤ、杉本愛、高橋利典、羽山響、土田正則
    • Organizer
      第25回日本成人先天性心疾患学会総会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 単心室疾患児の出生時低体重がFontan術後血行動態に及ぼす影響2024

    • Author(s)
      白石修一 渡邉マヤ 杉本愛 高橋利典 羽山響 土田正則
    • Organizer
      第54回日本心臓血管外科学会総会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 房室弁形成、肺動脈形成を併施したFontan手術2024

    • Author(s)
      白石修一
    • Organizer
      第54回日本心臓血管外科学会総会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Non-confluent PAに対しY字型人工血管でFontan手術を行った症例の遠隔期2023

    • Author(s)
      白石修一、渡邉マヤ、杉本愛、高橋利典、羽山響、高橋昌、土田正則
    • Organizer
      第59回日本小児循環器学会総会・学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Surgical outcomes of systemic to pulmonary shunt -Control of pulmonary blood flow with metal clip-2022

    • Author(s)
      Shiraishi Shuichi, Maya Watanabe, Ai Sugimoto, Toshinori Takahashi, Kyo Hayama, Masashi Takahashi, Masanori Tsuchida
    • Organizer
      The 36th Annual Meeting of European Association of Cardio-Thoracic Surgery (EACTS)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Autologous pulmonary artery patch aortoplasty for arch anomaly2022

    • Author(s)
      Shiraishi Shuichi, Maya Watanabe, Ai Sugimoto, Masashi Takahashi, Masanori Tsuchida
    • Organizer
      The 30th Annual Meeting of the Asian Society of Cardiovascular and Thoracic Surgeon (ASCVTS)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 肺動脈閉鎖・肺動脈弁逆流を合併した新生児重症三尖弁閉鎖不全(エブスタイン病・三尖弁異形成)の外科治療2022

    • Author(s)
      白石修一
    • Organizer
      West Japan Conference for Procedures in CVS (WEP)
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 成人先天性心疾患における三尖弁手術の手術成績と問題点2022

    • Author(s)
      白石修一、渡邉マヤ、杉本愛、高橋利典、土田正則
    • Organizer
      第75回日本胸部外科学会定期学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] 完全大血管転位に対する心房スイッチ手術(Senning/Mustard)術後の遠隔期問題点2022

    • Author(s)
      白石修一、渡邉マヤ、杉本愛、高橋利典、羽山響、土田正則
    • Organizer
      第24回日本成人先天性心疾患学会総会
    • Related Report
      2022 Research-status Report
  • [Presentation] Autologous pulmonary artery patch aortoplasty for arch anomaly2021

    • Author(s)
      Shiraishi Shuichi, Maya Watanabe, Ai Sugimoto, Masashi Takahashi, Masanori Tsuchida
    • Organizer
      The 30th Annual Meeting of the Asian Society of Cardiovascular and Thoracic Surgeon (ASCVTS)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 二心室修復を目指した両側肺動脈絞扼術の治療成績と問題点2021

    • Author(s)
      白石修一、渡邉マヤ、杉本愛、高橋昌、土田正則
    • Organizer
      第57回日本小児循環器学会総会・学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 自己肺動脈パッチを用いた大動脈弓再建2021

    • Author(s)
      白石修一、渡邉マヤ、杉本愛、高橋昌、土田正則
    • Organizer
      第57回日本小児循環器学会総会・学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 新生児開心術中に認めた僧帽弁逆流の術後経過及び遠隔期心機能に及ぼす影響2021

    • Author(s)
      白石修一、渡邉マヤ、杉本愛、高橋昌、土田正則
    • Organizer
      第74回日本胸部外科学会定期学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 先天性心疾患の成人期再手術における再胸骨正中切開の危険性の検討2021

    • Author(s)
      白石修一、渡邉マヤ、杉本愛、高橋昌、土田正則
    • Organizer
      第23回日本成人先天性心疾患学会総会
    • Related Report
      2021 Research-status Report

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

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