Frontal Plane QRS Axis

Frontal Plane QRS Axis

The frontal plane system can be divided into 4 quadrants: upper left, lower left, lower right, and upper right. The quadrants describe the position of the vector.

aVR = augmented voltage right arm; aVL = augmented voltage left arm; aVF = augmented voltage left foot.

凌鲲 宋/stock.adobe.com

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