ecg_6lead002.html

Frontal Plane QRS Axis = +75 degrees-KH

Frank G. Yanowitz, M.D.

Since there is no isoelectric lead in this ECG, the two closest leads are I and aVL. If I were isoelectric, the axis would be +90 degrees; if aVL were isoelectric, the axis would be +60 degrees. A nice compromize is +75 degrees. (The two closest leads are always 30 degrees apart.)