Impedance-based measuring method for hemodynamic parameters
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United States of America Patent
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Aug 24, 2010
Grant Date -
Aug 11, 2005
app pub date -
Apr 7, 2005
filing date -
Oct 7, 2002
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Abstract
A method is provided for measuring the volume, the composition and the movement of electroconductive body fluids, based on the electrical impedance of the body or a body segment, especially for performing electromechanocardiography (ELMEC) or impedance cardiography (IKG) measurements for determining hemodynamic parameters. According to the method, an alternating measuring current of at least one frequency is introduced into the body, and the impedance and temporal variations thereof of essentially the same body segment through which the alternating measuring current flows are measured for at least two different measuring lengths (L, L2, L3, L4, L5), essentially in the longitudinal direction of the body.
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