Vectorcardiographic Signs of Biventricular Hypertrophy

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Abstract
Fifty well-documented cases of biventricular hypertrophy (BVH) were studied by means of the Frank vectorcardiogram and compared with the standard ecg. Vectorcardiograms (150) of normal subjects established by means of the Frank and Wyss system were used as controls. It was shown that the vectorcardiogram ensures more reliable results than the ecg. The diagnosis of ventricular hypertrophy was made by grouping 4 signs in relation to each left and right ventricle. Right ventricular hypertrophy could be diagnosed in 72% of the cases, left ventricular hypertrophy in 84%. If 2 or more of the signs were met in each group, the diagnosis of BHV could be made in 56% of the cases. In 36%, 2 signs of 1 group met 1 sign of the other, so that the diagnosis was considered probable. One sign in each group was only seen in 4 cases.