[The use of frequency-correlation electrocardiography on patients with left ventricular hypertrophy].

The frequency correlation electrocardiogram (FCECG) was recorded in 27 patients with arterial hypertension (AH) and left ventricular hypertrophy (LVH), 8 patients with hypertrophic cardiomyopathy, 22 patients with coronary heart disease (CHD) and in 10 practically healthy volunteers. V4, V5 and V6 ECG leads were used as channel X, whereas lead II was used as channel Y. Application of V6 lead as channel X turned out most informative. The patients with AH and CHD had pathological indices in channel coherence. The patients with LVH manifested deviations in the spectrum of the amplitudes of lead II. The patients with associated LVH and relative coronary insufficiency demonstrated the unchanged FCECG like the practically healthy persons. In the given case, however, the unchanged FCECG in the above patients reflected the impairment of stimulation spreading in the left ventricular myocardium rather than the lack of its hypertrophy.