Title :
Time constants for switching flow in left ventricular output impedance
Author :
Boom, Herman B K ; Wijkstra, H.
Author_Institution :
Dept. of Electr. Eng., Twente Univ., Enschede, Netherlands
Abstract :
Pressure curves obtained in isolated rabbit hearts after the end of externally imposed constant flow pulses were divided by isovolumic pressure curves at the same volume. An exponential decay to a constant level, generally lower than one, was observed. The time constant equaled that found for switching-on of the flow pulse. The results indicate that flow deactivation can be described as a decrease of ventricular elastance.<>
Keywords :
biomechanics; blood; cardiology; haemodynamics; physiological models; blood; flow deactivation; isovolumic pressure curves; left ventricular output impedance; physiological models; rabbit hearts; switching flow; ventricular elastance;
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.1988.94502
