Rheocardiographic studies on the accuracy of cardiac stroke volume models
Baluev, E.P.; Parashin, V.B.
Meditsinskaia Tekhnika 5: 7-13
1984
ISSN/ISBN: 0025-8075 PMID: 6503678 Document Number: 232334
Some results of the studies on the accuracy of detecting pulsating stroke volume from rheocardiograms are discussed. Using a physical model it is shown that resulting values are strongly conditioned by relative positions of electrodes and pulsating volume, its shape, and the geometry of conducting medium. An approximate value of the stroke volume may be derived from the semiempirical formulae coupling relative variations of the resistance and the volume. It may differ from the true magnitude by the factor of 1.5-2.