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In an anaesthetized dog an exchange transfusion was carried out with stroma-free haemoglobin solution. The total circulating blood volume was kept constant. The heart-syncronous changes in the thoracic electrical impedance (Zo) were measured before and after the exchange transfusion. Zo consists of a parallel connection of a tissue impedance (Zt) and a blood impedance (Zb). With the aid of this model for Zo the relative variations in Zb (delta Zb/Zb) were calculated from the relative variations in Zo (delta Zo/Zo). The marked decrease of delta Zb/Zb during the experiment can only be explained by the fact that apart from the heart-synchronous changes in vascular volume the impedance changes are also caused by flow dependent changes in the electrical conductivity of blood caused by variations in orientation of the erythrocytes.
K R Visser, and
R Lamberts, and
A M Poelmann, and
W G Zijlstra
January 1976,
Zeitschrift fur experimentelle Chirurgie,
K R Visser, and
R Lamberts, and
A M Poelmann, and
W G Zijlstra
January 1984,
Zeitschrift fur experimentelle Chirurgie, Transplantation, und kunstliche Organe : Organ der Sektion Experimentelle Chirurgie der Gesellschaft fur Chirurgie der DDR,
K R Visser, and
R Lamberts, and
A M Poelmann, and
W G Zijlstra
January 1972,
Haematologia,
K R Visser, and
R Lamberts, and
A M Poelmann, and
W G Zijlstra
March 1983,
Laboratory investigation; a journal of technical methods and pathology,
K R Visser, and
R Lamberts, and
A M Poelmann, and
W G Zijlstra
March 1989,
Indian journal of experimental biology,
K R Visser, and
R Lamberts, and
A M Poelmann, and
W G Zijlstra
July 1987,
The Indian journal of medical research,
K R Visser, and
R Lamberts, and
A M Poelmann, and
W G Zijlstra
May 1978,
American journal of surgery,
K R Visser, and
R Lamberts, and
A M Poelmann, and
W G Zijlstra
January 1976,
Haematologia,
K R Visser, and
R Lamberts, and
A M Poelmann, and
W G Zijlstra
April 1976,
Zentralblatt fur Veterinarmedizin. Reihe A,
K R Visser, and
R Lamberts, and
A M Poelmann, and
W G Zijlstra
May 1976,
Polski tygodnik lekarski (Warsaw, Poland : 1960),
