how to read left ventricular hypertrophy?
['≥ QRS amplitude (voltage criteria; i.e., tall R-waves in LV leads, deep S-waves in RV leads)', 'Delayed intrinsicoid deflection in V6 (i.e., time from QRS onset to peak R is ≥ 0.05 sec)', 'Widened QRS/T angle (i.e., left ventricular strain pattern, or ST-T oriented opposite to QRS direction)']