| abstract |
Abstract: An apparatus and method are provided for monitoring cardiac output using bioelectrical impedance technology, wherein three orthogonal pairs of sensing electrodes (18a-18e) are provided near the aorta. The bioelectrical impedance measurement, which is located in the airway or esophagus, while the excitation current is injected into the intervening tissue mass via the current electrode (20) so that the voltage drop sensed by the sensing electrode is It reflects the voltage change initially induced by the dynamics of A method is provided for calculating cardiac output from bioelectrical impedance values using multiparameters derived using stepwise multiple linear regression or other optimization techniques. |