Determining The Electrical Axis Of The Heart

Determining The Heart's Axis

I. Principles To Remember:

II. Quadrants:

III. How Do We Determine The Heart's Electrical Axis ?

Look at Lead I and aVF

IV. Fine Tuning

It is not enough to merely determine the gross overall quadrant for the heart's electrical vector. It is better to be able to determine where in the quadrant the axis is located.

Here is how you "fine tune" axis determination