title: [Comparative studies with 4 orthogonal electrocardiographic systems of patients with bilateral ventricular hypertrophy].
abstract: One hundred forty five patients were examined, with established mainly clinically, bi-ventricular hypertrophy of three age subgroups, males and females separately and with the diagnosis, mitral-aortic heart defect, congestive cardiomyopathy, pulmonary heart with arterial hypertension and congenital heart defect with left-to-right shunt. The orthogonal electrocardiographic systems of Frank, McFee , SVEC III and Akulini  cev were used. Additionally, the results from 54 patients were discussed that had bi-ventricular hypertrophy definitely established by some other methods. The examinations of 103 healthy subjects served for comparison. The signs of left ventricular hypertrophy (RX RZ over the norm) were established to be well manifested by all systems used and at all ages, whereas the right ventricular--with increased SY in the younger patients and SX--in the older ones. Consideration given to the sum of the electrocardiographic indices of left- and right-ventricular hypertrophy, it could be said, that the systems of McFee and SVEC III, from all the orthogonal ECG systems used, are with the highest diagnostic accuracy in bi-ventricular heart hypertrophy.
mesh_terms: D000328:Adult; D006332:Cardiomegaly / Q000175:diagnosis* / Q000209:etiology; D004562:Electrocardiography / Q000295:instrumentation*; D004566:Electrodes; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged
vernacular_title: Sravnitelni izsledvaniia s chetiri ortogonalni elektrokardiografski sistemi pri bolni s dvukamerna khipertrofiia.