Literature DB >> 931862

Transthoracic admittance plethysmograph for measuring cardiac output.

H Ito, K I Yamakoshi, T Togawa.   

Abstract

A plethysmograph for measuring ventricular stroke volume (SV) from the transthoracic admittance variation was developed. A correlation study between the SV values determined by this method (SVy) and those measured by Kubicek's transthoracic impedance method (SVz) was carried out on 24 healthy subjects; the correlation coefficient was r = 0.99 and the regression line of SVY on SVz was y = 1.03x - 0.47. Based on the results obtained through the study, it was concluded that the admittance method was more advantageous than the impedance method for measuring SV.

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Year:  1976        PMID： 931862     DOI： 10.1152/jappl.1976.40.3.451

Source DB:  PubMed          Journal:  J Appl Physiol        ISSN： 0021-8987            Impact factor:   3.531


  13 in total

1.  A portable instrument for non-invasive monitoring of beat-by-beat cardiovascular haemodynamic parameters based on the volume-compensation and electrical-admittance method.

Authors:  M Nakagawara; K Yamakoshi
Journal:  Med Biol Eng Comput       Date:  2000-01       Impact factor: 2.602

2.  Electric impedance cuff for the indirect measurement of blood pressure and volume elastic modulus in human limb and finger arteries.

Authors:  H Shimazu; A Kawarada; H Ito; K Yamakoshi
Journal:  Med Biol Eng Comput       Date:  1989-09       Impact factor: 2.602

3.  Evaluation of the theory of cardiac-output computation from transthoracic impedance plethysmogram.

Authors:  K Yamakoshi; T Togawa; H Ito
Journal:  Med Biol Eng Comput       Date:  1977-09       Impact factor: 2.602

Review 4.  Measurement of aortic compliance from the transthoracic admittance plethysmogram in the living dog.

Authors:  H Ito; K Yamakoshi; H Shimazu; T Togawa
Journal:  Med Biol Eng Comput       Date:  1977-11       Impact factor: 2.602

5.  Noninvasive measurement of arterial elasticity in various human limbs.

Authors:  A Kawarada; H Shimazu; H Ito; K Yamakoshi
Journal:  Med Biol Eng Comput       Date:  1988-11       Impact factor: 2.602

6.  Noninvasive measurement of pressure/volume characteristics in human limb veins by electrical admittance plethysmography.

Authors:  H Shimazu; M Fukuoka; S Hayashi; K Seki; H Ito; K Yamakoshi; T Togawa
Journal:  Med Biol Eng Comput       Date:  1985-01       Impact factor: 2.602

7.  Noninvasive measurement of beat-to-beat vascular viscoelastic properties in human fingers and forearms.

Authors:  H Shimazu; M Fukuoka; H Ito; K Yamakoshi
Journal:  Med Biol Eng Comput       Date:  1985-01       Impact factor: 2.602

8.  Reproducible increases in blood pressure during intermittent noise exposure: underlying haemodynamic mechanisms specific to passive coping.

Authors:  Y Sawada
Journal:  Eur J Appl Physiol Occup Physiol       Date:  1993

9.  Voltage clamp method for the use of electrical admittance plethysmography in human body segments.

Authors:  K Yamakoshi; M Nakagawara
Journal:  Med Biol Eng Comput       Date:  1995-09       Impact factor: 2.602

10.  Electrical admittance cuff for noninvasive and simultaneous measurement of haematocrit, arterial pressure and elasticity using volume-oscillometric method.

Authors:  K Yamakoshi; S Tanaka; H Shimazu
Journal:  Med Biol Eng Comput       Date:  1994-07       Impact factor: 2.602
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