ECG Axis Interpretation
ECG Axis Interpretation ECG Axis Interpretation using the schematic illustration demonstrates the relationship between QRS axis and the frontal leads of the ECG. Normal Axis = QRS axis between -30° and +90°.Left Axis Deviation = QRS axis less than -30°.Right Axis Deviation = QRS axis greater than +90°.Extreme Axis Deviation = QRS axis between -90° and 180° (AKA “Northwest Axis”). Methods of ECG Axis Interpretation There are several complementary approaches to estimating QRS axis, which are summarized below: Method 1 of ECG Axis Interpretation– The Quadrant Method The most efficient way to estimate axis is to look at LEAD I … Read more