Electrocardiography: the electrical axis.

Abstract

The term "electrical axis of the heart" as conventionally used refers to the mean frontal-plane axis of the QRS complex. It is defined as the angle between the mean QRS vector and lead I and can be determined to the nearest 15 degrees by simple inspection of the frontal-plane leads. The axis is related to age and body build and deviates significantly from… (More)

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