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Figure 111-3

Left Ventricular Hypertrophy (LVH) Increases the Amplitude of Electrical Forces Directed to the Left and Posteriorly

Left ventricular hypertrophy (LVH) increases the amplitude of electrical forces directed to the left and posteriorly. In addition, repolarization abnormalities may cause ST-segment depression and T-wave inversion in leads with a prominent R wave. Right ventricular hypertrophy (RVH) may shift the QRS vector to the right; this effect usually is associated with an R, RS, or qR complex in lead V1. T-wave inversions may be present in the right precordial leads.