Title :
Arterial wave reflections and left ventricular energy output in vasoconstriction and vasodilation
Author :
Zhu, Y. ; Chen, B. ; Pan, L. ; Chen, E.C. ; Li, J.K.-J.
Author_Institution :
Dept. of Biomed. Eng., Rutgers Univ., New Brunswick, NJ, USA
Abstract :
Increased afterload is normally associated with vasoconstriction. The heart has to increase its work to overcome this load, which can be reduced with vasodilators. The forward and reflected waves are computed for the vasoconstriction-induced hypertension and subsequent vasodilation conditions. Results show that the increased and decreased work output by the left ventricle is principally modulated by the amount of wave reflection.
Keywords :
cardiology; haemodynamics; arterial wave reflections; heart; hemodynamic waveforms; increased afterload; left ventricle; left ventricular energy output; mongrel dog experiments; reflected waves; vasoconstriction; vasoconstriction-induced hypertension; vasodilation; Arteries; Blood pressure; Electromagnetic measurements; Fluid flow measurement; Heart; Hemodynamics; Impedance; Mechanical energy; Pressure measurement; Reflection;
Conference_Titel :
Bioengineering Conference, 1992., Proceedings of the 1992 Eighteenth IEEE Annual Northeast
Conference_Location :
Kingston, RI, USA
Print_ISBN :
0-7803-0902-2
DOI :
10.1109/NEBC.1992.285982
