Electrocardiography in different types of hypertrophic cardiomyopathies.

Alterations in ECG in hypertrophic cardiomyopathies (HCMP) have been described already earlier when the knowledge of HCMP was not so profound. The aim of this work was to analyse ECG findings in hypertrophic myelopathy and to determine their relation to morphological observations. 76 patients examined echocardiographically with catheterization were performed ECG recordings. Normal ECG had 3 patients (3.9%). In the rest of them electrocardiography confirmed left ventricular hypertrophy (63.2%), large R wave in V1(-3) (14.5%), diminishing of R wave in V1(-3) (28.9%), pathologic Q wave (23.7%), absence of "q" wave in V5,6 (48.8%), ST-T abnormalities (86.7%). Pathologic Q wave was found more often in patients with right ventricular hypertrophy, deep T waves (greater than 10 mm) currently occurred in apical form. It follows that the presence and the range of myocardial hypertrophy cannot be electrocardiographically recorded. Therefore the ECG is applied in great majority of patients only as a screening method.