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Research on the mechanism and management of atrial fibrillation after MIDCAB, OPCAB surgery

Research Project

Project/Area Number 12470272
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Thoracic surgery
Research InstitutionTOYAMA MEDICAL AND PHARMACEUTICAL UNIVERSITY

Principal Investigator

MISAKI Takurou  Toyama Medical and Pharmaceutical University, Faculty of Medicine, Professor, 医学部, 教授 (40092811)

Co-Investigator(Kenkyū-buntansha) KOTOH Keijyu  Toyama Medical and Pharmaceutical University, Hospital, Assistant Professor, 附属病院, 講師 (80272904)
WATANABE Go  Kanazawa University, Division of Cardiovascular Medicine, Professor, 大学院・医学系研究科, 教授 (60242492)
FUJIKI Akira  Toyama Medical and Pharmaceutical University, Hospital, Assistant Professor, 附属病院, 講師 (90181338)
Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥13,500,000 (Direct Cost: ¥13,500,000)
Fiscal Year 2001: ¥3,700,000 (Direct Cost: ¥3,700,000)
Fiscal Year 2000: ¥9,800,000 (Direct Cost: ¥9,800,000)
KeywordsMIDCAB / OPCAB / atrial fibrillation / epicarclial mapping / atril cyale length / spectral analysis / 心表面マツピング / 周波長解析 / スブトラクション法 / 冠動脈バイパス術 / 体外循環 / 電気生理学的手段 / f波周波数解析 / 心筋の異方向性
Research Abstract

Atrial fibrillation (af) is frequent complication after coronary artery bypass surgery, but little was known after minimally invasive coronary artery bypass (MIDCAB) and off-pump coronary artery bypass (OPCAB).To determine the predictor of af after beating coronary artery bypass, multianalysis was performed using SPSS in MIDCAB (N=138) and OPCAB (N=129) patients. Postoperative af developed in 59 patients(22.1%).Multivariate predictors were preoperative combination of diabetes mellitus (CR4.844, 95%CI 2.356-9.958, p=0.000), preoperative renal failure (CR2.845, 95%CI 1.176-6.884, p=0.002) and bypass graft for right coronary artery (CR 3.540, 95%CI 1.020-12.279, p=0.046). High tendency was seen in low LV ejection fraction and preoperative Ca antagonist admission. 2) Electrophysiological mapping study was performed during beating coronary artery surgery. However af was not developed and no data of af was obtained. During sinus rhythm abnormal potential was absent on atrium, SVC and pulmonary veins. New computer analyzing system of epicardial mapping for af was developed. Spectral analysis using a fast Fourier transforms was useful to check af cycle length. 3) To clarify the mechanism of spontaneous af, fast Fourier transform analysis of Holter EGG was used. Spectral analysis showed that spontaneous termination of af may depend on the disorganization of fibrillation waves and drug-induced termination may depend on the organization of af.

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] 土肥善郎, 渡邊 剛, 湖東慶樹, 三崎拓郎: "正中切開off-pump CABG症例の検討"胸部外科. 54(4). 275-278 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Fujiki A.: "Relation of fibrillatory wave amplitude with hemostatic abnormality and left atrial appendage dysfunction in patients with chronic nonrheumatic atrial fibrillation"Jpn Circ J. 65(5). 375-380 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Fujiki A.: "Spectral characteristics of human atrial fibrillation waves of the right atrial free wall with respect to the duration of atrial fibrillation and effect of class I"Jpn Circ J. 65(12). 1047-1051 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Dol Y, Watanabe G, Kotoh K, Misaki T.: "Evaluation of cases of off-pump CABG with mid-stern otomy"Kyobu Geka. 54(4). 275-278 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Fujiki A.: "Relation of fibrillatory wave amplitude with, hemostatic abnormality and left atrial appendage dysfunction in patients with chronic nonrheumatic atrial fibrillation"Jpn Circ J. 65(5). 375-380 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] Fujiki A.: "Spectral characteristics of human atrial fibrillation waves of the right atrial free wall with respect to the duration of atrial fibrillation and effect of class I"Jpn Circ J. 65(12). 1047-1051 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 土肥善郎, 渡邊剛, 湖東慶樹, 三崎拓郎: "正中切開off-pump CABG症例の検討"胸部外科. 54(4). 275-278 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Fujiki A.: "Relation of fibrillatory wave amplitude with hemostatic abnormality and left atrial appendage dysfunction in patients with chronic nonrheumatic atrial fibrillation"Jpn Circ J. 65(5). 375-380 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Fujiki A.: "Spectral characteristics of human atrial fibrillation waves of the right atrial free wall with respect to the duration of atrial fibrillation and effect of class I."Jpn Circ J. 65(12). 1047-1051 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 土肥善郎: "正中切開off-pump CABG症例の検討"胸部外科. 54(4)(印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 高橋政夫: "Off pump CABGの功罪:Doughnut heart stabilizerを用いたOff pump CABG 400例の経験"日心血外会誌. 31(特別号). 16 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 渡邊剛: "Off-pump CABCの手術適応,手技と21世紀への課題"Jpn Thorac Cardiovasc Surg. 68(特別号). 153 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 湖束慶樹: "小開胸拍動下冠動脈バイパス術後の創傷治癒遅延に関与する術前術中因子の検討"Jpn Thorac Cardiovasc Surg. 69(特別号). 338 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Fujiki A: "Characteristics of fibrillation waves of right atrial free Wall in patients with conversion of atrial fibrillation to atrial flutter."Circulation. 102(18). 802 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 藤木明: "心電図f波の波形解析からみた心房細動"心電図. 20(5). 421 (2000)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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