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Less Invasive Method for Estimating E max Under Cardiac Assistance — Angular Frequency Method

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Heart Replacement

  • 136 Accesses

Summary

A new less invasive method for estimating the maximum elastance (E max ) of the ventricle under cardiac assistance without direct measurement of the left ventricular volume and pressure has been developed. The key technique is to estimate the angular frequency, identifying the value of E max in the three-element Windkessel model. Numerical simulations were used to examine the adequacy of the method. However, an in vivo experiment demonstrated that the estimation error must be reduced for application of the method to clinical use.

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References

  1. Takeuchi M, Igarashi Y, Tomimoto S, Odake M, Hayashi T, Tsukamoto T, Hata K, Takaoka H, Fukuzaki H (1991) Single-beat estimation of the slope of the end-systolic pressure-volume relation in the human left ventricle. Circulation 83 (1): 202–212

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  2. Yoshizawa M, Takeda H, Miura M, Yambe T, Katahira Y, Nitta S (1993) Real-time cardiac output estimation of the circulatory system under left ventricular assistance. IEEE Trans Biomed Eng 40 (3): 266–275

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Author information

Authors and Affiliations

  1. Graduate School of Information Sciences, Tohoku University, Aoba, Aoba-ku, Sendai, 980-77, Japan

    Makoto Yoshizawa

  2. Department of Electrical Engineering, Tohoku University, Aoba, Aoba-ku, Sendai, 980-77, Japan

    Shozo Iemura & Ken-ichi Abe

  3. Department of Knowledge-Based Information Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichi, 441, Japan

    Daisuke Sato

  4. Department of Electrical Engineering, Tohoku Gakuin University, Chuo, Tagajo, 985, Japan

    Hiroshi Takeda

  5. Department of Medical Engineering and Cardiology, Institute of Development, Aging and Cancer, Tohoku University, Seiryo-machi, Sendai, 980-77, Japan

    Tomoyuki Yambe & Shin-ichi Nitta

Authors
  1. Makoto Yoshizawa
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  2. Shozo Iemura
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  3. Ken-ichi Abe
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  4. Daisuke Sato
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  5. Hiroshi Takeda
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  6. Tomoyuki Yambe
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  7. Shin-ichi Nitta
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Editor information

Editors and Affiliations

  1. Shonan Center, Terumo Corporation, 1500 Inokuchi, Naka-machi, Ashigarakami-gun, 259-01, Kanagawa, Japan

    Tetsuzo Akutsu M.D., Ph.D. (Chairman of the Board of Directors) (Chairman of the Board of Directors)

  2. Department of Cardiovascular Surgery, The Heart Institute of Japan, Tokyo Women’s Medical College, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162, Japan

    Hitoshi Koyanagi M.D. (Chairman and Professor) (Chairman and Professor)

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© 1996 Springer Japan

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Cite this paper

Yoshizawa, M. et al. (1996). Less Invasive Method for Estimating E max Under Cardiac Assistance — Angular Frequency Method. In: Akutsu, T., Koyanagi, H. (eds) Heart Replacement. Springer, Tokyo. https://doi.org/10.1007/978-4-431-67020-9_39

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  • DOI: https://doi.org/10.1007/978-4-431-67020-9_39

  • Publisher Name: Springer, Tokyo

  • Print ISBN: 978-4-431-67022-3

  • Online ISBN: 978-4-431-67020-9

  • eBook Packages: Springer Book Archive

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