Abstract
In a preceding communication1 I have suggested that we are now in a position to look more closely at the higher dynamic aspects of cardiac function in our patients. From an analogy with common experience in automobiles, it is reasonable to expect that the first sign of myoeardial weakness will manifest itself in diminished ability to accelerate the blood, that is, in diminished cardiac forces. In this study we aim to establish a clinical method of detecting abnormalities of the initial cardiac forces by means of the ballistocardiogram.