Title :
A new method to estimate cardiac contractility and pressure-volume area
Author :
Barnea, Ofer ; Jaron, Dov
Author_Institution :
Biomed. Eng. & Sci. Inst., Drexel Univ., Philadelphia, PA, USA
Abstract :
A method for obtaining the cardiac contractility index (E/sub max/) and the pressure-volume area (PVA) without the need for measurement of left ventricular volume is presented. The method allows calculation of these parameters from pressure and flow waveforms of ejecting beats. It requires only a single isovolumic ventricular contraction performed at any end systolic volume. The method is based on the Suga-Sagawa ventricular model and its representation in the pressure-volume plane.<>
Keywords :
biological techniques and instruments; biomechanics; cardiology; pressure measurement; PVA; Suga-Sagawa ventricular model; cardiac contractility; ejecting beats; flow waveforms; pressure-volume area; systolic volume;
Conference_Titel :
Engineering in Medicine and Biology Society, 1988. Proceedings of the Annual International Conference of the IEEE
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-0785-2
DOI :
10.1109/IEMBS.1988.94503
