Diagnosis of Left Ventricular Hypertrophy by Orthogonal Scalar Electro-cardiogram

The orthogonal electrocardiogram in left ventricular hypertrophy.

It has been shown experimentally that three bipolar electrocardiograms from the main axes of the body contain as much or more information about QRS forces than 12-lead electrocardiograms (Frank et al., 1955; Schmitt and Simonson, 1955; and Newman et al., 1955). A clinical comparison of such a three-lead system and the 12 conventional leads has not yet been reported, and one aim of the present s...

Vectorcardiographic diagnosis of left ventricular hypertrophy.

The vectorcardiographic diagnosis of left ventricular hypertrophy, using the Frank lead system, was evaluated in 93 autopsied male patients (70 with hypertrophy of the left ventricle and 23 without such hypertrophy). The criterion of the maximal QRS magnitude in the transverse plane greater than 2.2 mv below the age of 50 years and 1.8 mv at the age of 50 or more was positive in 61% of hypertro...

Echocardiographic diagnosis of left ventricular hypertrophy.

Echocardiograms were obtained on 27 adults with electrocardiographic criteria of left ventricular hypertrophy (LVH) to determine how echocardiograms might best identify LVH. Both the left ventricular (LV) posterior wall thickness and interventricular septal thickness were found by echocardiography to be increased (greater than or equal to 12 mm) in only 13 of 27 patients (48%) with LVH. The LV ...

Vectoreardiographic Diagnosis of Left Ventricular Hypertrophy

The vectorcardiographic diagnosis of left ventricular hypertrophy, using the Frank lead system, was evaluated in 93 autopsied male patients (70 with hypertrophy of the left ventricle and 23 without such hypertrophy). The criterion of the maximal QRS magnitude in the transverse plane greater than 2.2 mv below the age of 50 years and 1.8 mv at the age of 50 or more was positive in 61% of hypertro...

The cardiogram of congenital and acquired right ventricular hypertrophy.