Left ventricular ejection force and impulse: Noninvasive assessment using Doppler ultrasound

  • Karl Isaaz
Part of the Developments in Cardiovascular Medicine book series (DICM, volume 105)


The importance of the mass-acceleration concept for the evaluation of cardiac function has been emphasized many years ago [1–6] and re-emphasized more recently [7–9]. In 1964, Rushmer [7] concluded that the left ventricle acts as an impulse generator and that the ‘initial ventricular impulse’ represents a reliable index of myocardial performance. Based on this concept, Rushmer suggested the use of measurement of peak aortic blood velocity and acceleration as indices of LV function [7]. Noble et al. [8] have suggested from a series of animal experiments that the maximal aortic blood acceleration is closely related to the maximum force exerted by the left ventricle in early systole and directed towards overcoming inertia. The force is a well established physical term defined as the product of mass and acceleration according to Newton’s second law of motion: Force = mass × acceleration


Doppler Echocardiography Acceleration Time Peak Acceleration Ejection Time Aortic Blood 
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Copyright information

© Kluwer Academic Publishers 1990

Authors and Affiliations

  • Karl Isaaz
    • 1
  1. 1.Service de Cardiologie A, CHU de Nancy-BraboisUniversité de NancyVandoeuvre-les-NancyFrance

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