Parameter optimization method for less-invasive and beat-by-beat estimation of Emax

Makoto Yoshizawa; Shozo Iemura; Ken ichi Abe; Hiroshi Takeda; Yoshito Kakinuma; Hiroshi Akiho; Tomoyuki Yambe; Shin ichi Nitta

Parameter optimization method for less-invasive and beat-by-beat estimation of E_max

Makoto Yoshizawa, Shozo Iemura, Ken ichi Abe, Hiroshi Takeda, Yoshito Kakinuma, Hiroshi Akiho, Tomoyuki Yambe, Shin ichi Nitta

IDAC - PreClinical Research Center

Tohoku University

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

A new method for less-invasive and beat-by-beat estimation of the maximum ventricular elastance (E_max) has been proposed. The method (parameter optimization method) needs only two measurements: aortic pressure and flow. In the estimation process, least squares method was applied to an identity equation based on a simple electrical circuit model of the systemic circulation. In the model, the left ventricular elastance was approximated by a linear time function. In vivo experiments using an adult goat yielded small estimation errors of aortic flow less than about 1.5 L/min. Stability of estimation was also good.

Original language	English
Pages (from-to)	1326-1327
Number of pages	2
Journal	Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume	3
Publication status	Published - 1996
Event	Proceedings of the 1996 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 4 (of 5) - Amsterdam, Neth Duration: 1996 Oct 31 → 1996 Nov 3

Cite this

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title = "Parameter optimization method for less-invasive and beat-by-beat estimation of Emax",

abstract = "A new method for less-invasive and beat-by-beat estimation of the maximum ventricular elastance (Emax) has been proposed. The method (parameter optimization method) needs only two measurements: aortic pressure and flow. In the estimation process, least squares method was applied to an identity equation based on a simple electrical circuit model of the systemic circulation. In the model, the left ventricular elastance was approximated by a linear time function. In vivo experiments using an adult goat yielded small estimation errors of aortic flow less than about 1.5 L/min. Stability of estimation was also good.",

author = "Makoto Yoshizawa and Shozo Iemura and Abe, {Ken ichi} and Hiroshi Takeda and Yoshito Kakinuma and Hiroshi Akiho and Tomoyuki Yambe and Nitta, {Shin ichi}",

year = "1996",

language = "English",

volume = "3",

pages = "1326--1327",

journal = "Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings",

issn = "0589-1019",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

note = "Proceedings of the 1996 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 4 (of 5) ; Conference date: 31-10-1996 Through 03-11-1996",

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TY - JOUR

T1 - Parameter optimization method for less-invasive and beat-by-beat estimation of Emax

AU - Yoshizawa, Makoto

AU - Iemura, Shozo

AU - Abe, Ken ichi

AU - Takeda, Hiroshi

AU - Kakinuma, Yoshito

AU - Akiho, Hiroshi

AU - Yambe, Tomoyuki

AU - Nitta, Shin ichi

PY - 1996

Y1 - 1996

N2 - A new method for less-invasive and beat-by-beat estimation of the maximum ventricular elastance (Emax) has been proposed. The method (parameter optimization method) needs only two measurements: aortic pressure and flow. In the estimation process, least squares method was applied to an identity equation based on a simple electrical circuit model of the systemic circulation. In the model, the left ventricular elastance was approximated by a linear time function. In vivo experiments using an adult goat yielded small estimation errors of aortic flow less than about 1.5 L/min. Stability of estimation was also good.

AB - A new method for less-invasive and beat-by-beat estimation of the maximum ventricular elastance (Emax) has been proposed. The method (parameter optimization method) needs only two measurements: aortic pressure and flow. In the estimation process, least squares method was applied to an identity equation based on a simple electrical circuit model of the systemic circulation. In the model, the left ventricular elastance was approximated by a linear time function. In vivo experiments using an adult goat yielded small estimation errors of aortic flow less than about 1.5 L/min. Stability of estimation was also good.

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M3 - Conference article

AN - SCOPUS:0030315926

SN - 0589-1019

VL - 3

SP - 1326

EP - 1327

JO - Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings

JF - Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings

T2 - Proceedings of the 1996 18th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 4 (of 5)

Y2 - 31 October 1996 through 3 November 1996

ER -

Parameter optimization method for less-invasive and beat-by-beat estimation of E_max

Abstract

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