[Registration with piezoelectric sensors of the normal in vivo activity of the contractile element of the right ventricle].
A new method employed for registration with piezoelectric sensors of the force developed or acceleration of shortening velocity of the contractile element, throughout the right cardiac cycle, is described. The normal activity of the contractile element shows different aspects in both ventricles. SPz curve of the right ventricle is compared with the correspondent SPz curve of the left ventricle. The former curve shows that blood ejection to pulmonary artery is essentially due to developed force or acceleration of shortening velocity of the contractile element, during the isometric contraction phase of the cardiac cycle. Ejection period, with quite constant shortening velocity, seems to complete the blood expulsion. Left ventricular blood flow to systemic circuit is mainly due to early ejection phase, where developed force or acceleration of the shortening velocity of the contractile element appears to be higher, to impulse blood to the aortic artery.
D000818:Animals; D001783:Blood Flow Velocity; D001794:Blood Pressure; D004285:Dogs; D004562:Electrocardiography; D005260:Female; D006439:Hemodynamics; D008297:Male; D009200:Myocardial Contraction; D013318:Stroke Volume; D016276:Ventricular Function
Registro con sensores piezoeléctricos de la actividad normal "in vivo" del elemento contráctil del ventrículo derecho.