Right Axis Deviation
April 24th, 2019
Overview
Right axis deviation occurs when the direction of cardiac depolarisation lies between 90° and 180°.
Look For
- Negative lead I with positive lead aVF.
Lead II will be positive between 90-150° and negative between 150-180°.
Causes of Right Axis Deviation
- Right ventricular hypertrophy
- Right heart strain - PE, COPD
- Lateral myocardial infarction
- Left posterior fascicular block
- Dextrocardia
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