Title :
Noninvasive estimation of cardiac output
Author :
Welkowitz, Walter ; Cui, Qing ; Qi, Yun ; Kostis, John B.
Author_Institution :
Dept. of Biomed. Eng., Rutgers Univ., Piscataway, NJ, USA
Abstract :
A noninvasive method of measuring cardiac output is described. The method uses adaptive aorta models in conjunction with femoral and carotid pulse contour waveform measurements to calculate aortic flow. Results are presented from measurements on dogs using internal pressure recordings made with fluid-filled catheters and compared with electromagnetic flow measurements taken in the ascending aorta. Preliminary results using external pulse measurements on patients are also presented and compared with thermal dilution measurements.
Keywords :
biomedical measurement; cardiology; haemodynamics; adaptive aorta models; ascending aorta; cardiac output measurement; carotid pulse contour waveform measurements; dogs; electromagnetic flow measurements; external pulse measurements; femoral pulse; fluid-filled catheters; internal pressure recordings; medical measurement technique; noninvasive method; patients; thermal dilution measurements; Biomedical measurements; Cardiology; Elasticity; Equations; Fluid flow measurement; Immune system; Instruments; Pressure measurement; Pulse measurements; Ultrasonic variables measurement; Animals; Aorta; Cardiac Output; Dogs; Heart Function Tests; Humans; Pressure; Rheology; Signal Processing, Computer-Assisted;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
