[Diagnostic value of Frank's corrected orthogonal electrocardiogram].

The changes in the corrected orthogonal electrocardiograms of 411 patients were analyzed: 134 with right ventricle loading, 137 with left ventricle loading and 140 with myocardial infarction (chronic phase). On the base of sensitivity and specificity criteria the indices SXmV, SXmsec and QZmV for the patients with right ventricle loading and RXmV and RZmV for the patients with left ventricle loading proved to be with the highest diagnostic value. Sensitivity is within 19% to 61%. Sensitivity is within 85% and 95% in patients with myocardial infarction (chronic phase), for the different indices depending on the infarction zone. The comparative analyses of the indices of the corrected orthagonal Frank electrocardiogram and the standard electrocardiogram (12 leads) give a certain preference to the indices of the standard electrocardiography.