The relation between aortic elasticity and systolic complex of the direct body ballistocardiogram

On the basis of the analysis of 60 clinically healthy men divided into 2 age groups according to the degree of aortic elasticity, it was found that the diminution of elasticity was accompanied by reduction of the amplitude of I, J and K waves, increase of the gamma-index (gamma=aK/aJ) and shortening of the H-K interval. The subjects were divided into analysed groups according to the cardiographic indices of atheromatosis and their age. Similar types of change, especially for the decrease of I, J and K wave amplitudes, can be an effect of the diminution of cardiac contractility. Consequently, the correct evaluation of a pathologic Bcg (especially in older people) requires additional information as to the condition of aortic elasticity.