The changes in blood resistivity with haematocrit and temperature

1975 ◽  
Vol 1 (4) ◽  
pp. 153-162 ◽  
Author(s):  
S. N. Mohapatra ◽  
D. W. Hill
Keyword(s):  
Blood Resistivity

Calibrated impedance plethysmograph

1980 ◽  
Vol 239 (2) ◽  
pp. H283-H288
Author(s):  
M. R. Yablonski ◽  
J. M. Van De Water ◽  
B. E. Mount ◽  
E. D. Laska ◽  
R. B. Indech
Keyword(s):  
Electrical Impedance ◽  
Correlation Coefficients ◽  
Pulse Frequency ◽  
Volume Measurement ◽  
Frequency Variation ◽  
Blood Resistivity ◽  
Impedance Model ◽  
Electrode Distance ◽  
Pulse Volume ◽  
Impedance Plethysmograph

The accuracy of quantitative pulse-volume measurement with a calibrated electrical impedance plethysmograph was determined on a laboratory limb-segment model. Changes in electrical impedance detected via a tetraprolar electode configuration were related to pulse-volume changes by the parallel-impedance model described by Nyboer et al. (The Impedance Plethysmograph: An Electrical Volume Recorder. Natl. Res. Council, Comm. Aviation Med. 149, 1943). The instrument employed in this study calculated pulse volume assuming two standard conditions: distance between voltage electrodes, l, is 15 cm, and resistivitiy of blood, rho b, is 150 omega x cm. The effects of varying tissue and blood resistivity, pulse frequency, and electrode distance were investigated. Measurements under three ionically distinct conditions gave an overall accuracy of 96.6% with correlation coefficients of 0.99 for each condition. Measurement accuracy was maintained with a pulse-frequency variation in the range of 15-150 pulses/min and with application of correction factors for electrode distance and blood resistivity other than the standard values.

scholarly journals 901 CHANGES IN BLOOD RESISTIVITY DUE TO A SUB-MAXIMAL EXERCISE BOUT

1994 ◽  
Vol 26 (Supplement) ◽  
pp. S161
Author(s):  
J. De la Cruz ◽  
P. Babington ◽  
C. Harms ◽  
J. Stager
Keyword(s):  
Maximal Exercise ◽  
Exercise Bout ◽  
Blood Resistivity

scholarly journals Specific resistance of blood and plasma in pregnant women

1982 ◽  
Vol 63 (4) ◽  
pp. 40-41
Author(s):  
R. H. Tukshaitov ◽  
I. K. Baytiryak
Keyword(s):  
Stroke Volume ◽  
Pregnant Women ◽  
Specific Resistance ◽  
Blood Resistivity ◽  
Mean Values ◽  
The Mean

The mean values and limits of variability of blood and plasma resistivity were studied in 116 pregnant women. It was found that the previously proposed value of blood resistivity is significantly overestimated and distorts the value of the stroke volume.

scholarly journals Relation Between Blood Resistivity and Hematocrit in Fresh Human Fetal Blood

1981 ◽  
Vol 15 (6) ◽  
pp. 964-966 ◽  
Author(s):  
Kenneth Sandberg ◽  
Bengt-Arne Sjöqvist ◽  
Torsten Olsson
Keyword(s):  
Fetal Blood ◽  
Blood Resistivity
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