Some deterioration of the homogeneity of atrium and ventricular excitement has been noticed by the authors in practically healthy elderly subjects. Patients with ischemic heart disease had significant differencies in above mentioned indices than healthy subjects, with all this the degree of non-homogeneity of atria was greater in patients with atrial fibrillation. A new criterium (delta RT) was proposed to reveal subjects with low possibility of the development of ischemic heart disease.
