Instantaneous and Continuous Cardiac Output Obtained with a Doppler Pulmonary Artery Catheter
by Jerome Segal, MD, Ronald G. Perl, MD, PhD, Andrew J. Ford, Jr, BS, Roger A. Stern, PhD, Steve M. Gehlbach, PhD.
Published in 1989 in: Journal of American College of Cardiaology 1989; 13:1382-92.
AbstractA newly developed, flow-directed, Doppler pulmonary artery catheter, capable of measuring instantaneous and continuous cardia output, was evaluated in both an in vitro pump model and an animal model. Quantitative flow was calculated with the use of the instantaneous, space-average velocity (obtained from the velocity profile) and the instantaneous area (obtained from the vessel diameter) and compared with electromagnetic flow. Additionally, simultaneous thermodilution flow measurements were obtained.