Presentation 2000/11/23
Evaluation of the critical mass hypothesis of the ventricular fibrillation with a mathematical model. : -Simulation study-
Sunao TODA, Takashi ASHIHARA, Toru SUZUKI, Tsunetoyo NAMBA, Ayaka KAWASE, Takanori IKEDA, Masashi INAGAKI, Jun WATANABE, Kunio SHIRATO, Kazuo NAKAZAWA,
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Abstract(in English) The critical mass hypothesis says critical amount of myocardium is needed to maintain the ventricular fibrillation. We evaluated this hypothesis by using 3-D tissue models with the Luo-Rudy model. We constructed a parallelepipedal slab and a human ventricular shaped model. The critical mass in each model was 480, 000 units and 420, 000-550, 000 units, respectively, which corresponded to 7.2-9.4cm^3 of the myocardium. When the tissue volume was the same, the fibrillation became difficult to maintain as the surface area of the tissue widened. The fibrillation terminated when the surface to volume ratio (S/V) was over 3.5. We concluded that the maintenance of the fibrillation is determined by the S/V of the tissue rather than only the critical mass.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) ventricular fibrillation / critical mass hypothesis / spiral wave / Luo-Rudy model
Paper # MBE2000-96
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Committee MBE
Conference Date 2000/11/23(1days)
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Registration To ME and Bio Cybernetics (MBE)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Evaluation of the critical mass hypothesis of the ventricular fibrillation with a mathematical model. : -Simulation study-
Sub Title (in English)
Keyword(1) ventricular fibrillation
Keyword(2) critical mass hypothesis
Keyword(3) spiral wave
Keyword(4) Luo-Rudy model
1st Author's Name Sunao TODA
1st Author's Affiliation National Cardiovascular Center Research Institute : Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine()
2nd Author's Name Takashi ASHIHARA
2nd Author's Affiliation National Cardiovascular Center Research Institute : First Department of Internal Medicine, Shiga University of Medical Science
3rd Author's Name Toru SUZUKI
3rd Author's Affiliation National Cardiovascular Center Research Institute
4th Author's Name Tsunetoyo NAMBA
4th Author's Affiliation Department of Medical Technology, Kagawa Prefectural College of Health Science
5th Author's Name Ayaka KAWASE
5th Author's Affiliation Third Department of Internal Medicine, Ohashi Hospital, Toho University
6th Author's Name Takanori IKEDA
6th Author's Affiliation Third Department of Internal Medicine, Ohashi Hospital, Toho University
7th Author's Name Masashi INAGAKI
7th Author's Affiliation National Cardiovascular Center Research Institute
8th Author's Name Jun WATANABE
8th Author's Affiliation Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine
9th Author's Name Kunio SHIRATO
9th Author's Affiliation Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine
10th Author's Name Kazuo NAKAZAWA
10th Author's Affiliation National Cardiovascular Center Research Institute
Date 2000/11/23
Paper # MBE2000-96
Volume (vol) vol.100
Number (no) 478
Page pp.pp.-
#Pages 8
Date of Issue