Open AccessThe Origin of the Variations of Body Impedance Occurring during the Cardiac Cycle
Author(s) -
F. H. Bonjer,
Jw. van den Berg,
M. N. J. Dirken
Publication year - 1952
Publication title -
circulation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 7.795
H-Index - 607
eISSN - 1524-4539
pISSN - 0009-7322
DOI - 10.1161/01.cir.6.3.415
Subject(s) - medicine , cardiac cycle , electrical impedance , trunk , cardiology , rhythm , biomedical engineering , biology , physics , ecology , quantum mechanics
If the trunk is placed between two electrodes of a high frequency circuit, changes in impedance occur during the cardiac cycle. Experiments are presented which show that these variations do not result from the actual volume changes of the heart, as has been suggested in the literature. The changes in impedance are caused by the rhythmic variations in blood content of the vessels.
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