What is Left Axis Deviation ECG?
The heart’s electrical axis refers to the general direction of the electrical impulses as they travel through the heart. This is measured in degrees on the frontal plane, with normal axis ranging from -30° to +90°. Left Axis Deviation occurs when this electrical axis shifts to between -30° and -90°. It is often detected as an incidental finding on an ECG and may or may not be associated with underlying pathology.