[Planimetric analysis of ventricular depolarization on Frank's corrected orthogonal electrocardiogram in healthy hearts and in patients with ventricular loading].

Nineteen planimetric indices of 110 cardiac healthy subjects, 141 patient with left ventricle loading and 136 patients with right ventricle loading are analyzed. On the base of the variation analysis and determination of statistically significant differences, it was established that in right-ventricular loading the following indices deviate from the norm: ASX, AQZ, AQRSX, AQRSz, SAQRSx, SAQRSy, SAQRSz, SAS, SAQRSg, whereas in left-ventricular loading -- ARx, ARz, AQRSx, AQRSz, SAQRx, SAQRSy, SAQRz, SAR, SAQRSg. At a second stage, the sensitivity of the separate indices from the groups with left ventricular and right-ventricular loading was amalyzed, as well as the separate subgroups (pulmonary stenosis, aortic stenosis, mitral stenosis, interauricular defect, arterial hypertension, mitral or aortic insufficiency. The results were compared with those of axial indices, obtained from another investigation of the authors. The planimetric analysis was established to be more complex than the axial and the index SAQRSg to be with the best sensitivity in the cases with hemodynamically lightly loaded musculature.