Title :
Catheter distortion effects on the evaluation of arterial input impedance and related parameters
Author :
Gerard, Paul ; Pochet, Thierry ; Lambermont, Bernard ; Detry, Olivier ; Potty, Philippe ; D´Orio, V. ; Defraigne, Jean-Olivier ; Fossion, Anny ; Limet, Raymond
Author_Institution :
Hemodynamics Res. Centre, Liege Univ., Belgium
fDate :
31 Oct-3 Nov 1996
Abstract :
Fluid-filled catheter-pressure transducer systems are often used to measure pressure in the arterial system. An index is proposed to appreciate, in such systems, the distortion of input impedance at each frequency. Effects on the evaluation of input impedance and some usual derived parameters such as zero-phase frequency, distance to the effective reflection site and characteristic impedance are examined
Keywords :
biomedical equipment; blood pressure measurement; physiological models; arterial input impedance evaluation; arterial system pressure measurement; catheter distortion effects; characteristic impedance; distance to effective reflection site; fluid-filled catheter-pressure transducer systems; medical hemodynamic measurements; zero-phase frequency; Calibration; Catheters; Distortion measurement; Frequency; Hemodynamics; Impedance measurement; Parameter estimation; Pressure measurement; Reflection; Transducers;
Conference_Titel :
Engineering in Medicine and Biology Society, 1996. Bridging Disciplines for Biomedicine. Proceedings of the 18th Annual International Conference of the IEEE
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-3811-1
DOI :
10.1109/IEMBS.1996.656832
