Left axis deviation occurs when the QRS axis falls between -30 and -90. There are a variety of causes, including left anterior fascicular block and left ventricular hypertrophy. See the ECG basics ...

Left ventricular hypertrophy (LVH) is an abnormal thickening of the left ventricular myocardium that occurs as an adaptive mechanism to increased afterload. The left ventricular myocytes ...

Normal ECGs include common, training-related findings in athletes such as high QRS amplitude meeting voltage criteria for left ventricular hypertrophy ... pathological Q-waves, left axis deviation and ...

The presence of high QRS voltages that fulfil voltage criteria for left or right ventricular hypertrophy in the absence ... repolarisation variant in black athletes. Left and right axis deviation, ...