Clinical impact of left and right axis deviations with narrow QRS complex on 3-year outcomes in a hospital-based population in Japan | Scientific Reports
Electrical Axis and Axis Deviation - BASIC PRINCIPLES AND PATTERNS - Clinical Electrocardiography: A Simplified Approach, 7th Edition (2006)
The QRS axis | Deranged Physiology
Trigonometry of the ECG - The Physiological Society
Cardiac Axis Deviations Made Easy - YouTube
Cardiac Axis in 5 min - YouTube
Heart Axis Calculation
Axis Determination
PDF) Calculating cardiac axis on a 12-lead ECG
Understanding the ECG. Part 6: QRS axis | British Journal of Cardiac Nursing