Hemodynamic syndromes in apex-cardiography.
The results from 8,000 investigations and comparative studies between mean and systolic pressures in the left atrium and changes in the diastole portion of the apex-cardiogram are presented. A correlation is established between the mean pressure and OF duration for post-puberty ages. A similar dependence is also found between the amplitude value of the atrial wave and the systolic pressure in the left atrium. The physiological variations are outlined. Three distinct, pathological hemodynamic syndromes, expressing the dependence between the magnitudes of systolic and mean pressures, are established.