Video - ECG axis
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Video Summary
The ECG axis is the direction of the overall electrical activity of the heart. ECG can be used to help identify problems with the heart's rhythm (cardiac arrhythmia) or with the conduction of electricity through the heart. The axis is measured in degrees, from 0 (horizontal) to +90 (vertical) and -90 (inverted). A normal ECG axis should be anywhere from +30 to -60. An abnormal ECG axis may indicate problems with the heart's electrical activity, such as right or left ventricular hypertrophy, or arrhythmias.
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