In Right Axis Deviation , the electrical conduction of the heart has an electrical axis greater than +105 degrees on a 12-lead ECG .
However , the down stroke of lead 1 is slightly larger than the upstroke so we know it is slightly more than 90�.Right Axis Deviation ( RAD ) is a heart condition wherein the electrical conduction of the heart has an electrical axis greater than +90� ( or sometimes +105� ) on a 12-lead ECG .
Right axis deviation