Aids for Determining Magnitude and Direction of Electric Axes of the Electrocardiogram
Tables are presented which serve to facilitate the determination of magnitudes and directions of the electrical axes of various waves and segments of the electrocardiogram (P, QRS, RS-T, T and G). The tables may be used with the standard or unipolar limb leads. Normal values for the magnitudes and directions of certain vectors are presented.
- © 1950 American Heart Association, Inc.