Ventricular volume elasticity: a component of cardiovascular control?
According to Koepchen, stimulation of different receptors within a complex network produces typical patterns of effector responses. We investigated whether the dynamical volume elasticity of the heart chamber is an independent component of cardiovascular control. The measurement of the dynamical volume elasticity was calculated by changes of the eigenfrequency of a modified catheter transducer system. The carotid baro- and chemoreflex affected end-diastolic pressure, contractility and calculated diastolic and systolic elasticity to different extents. In conclusion, cardiac volume elasticity is an independent element interacting with other parameters in cardiovascular control.
Encke
T
T
Universitätsklinikum Charité, Medizinische Fakultät, Humboldt-Universität zu Berlin, Germany.
Flemming
B
B
Roloff
D
D
Wronski
T
T
D000818:Animals; D002346:Carotid Sinus / Q000502:physiology; D004548:Elasticity; D005260:Female; D006321:Heart / Q000502:physiology*; D008297:Male; D010477:Perfusion; D011311:Pressoreceptors / Q000502:physiology*; D011817:Rabbits; D013997:Time Factors