Lesson 1, Topic 6
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Frontal Plane Leads

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The frontal, sagittal, and transverse (also called horizontal) planes are illustrated in the cat above. Leads I, II, III, aVR, aVL, and aVF are the leads available in the frontal plane.

In the illustration above, a cross-section of the heart is superimposed on the frontal plane diagram. The arrow heads point toward the positive pole of each lead.

The frontal plane diagram shows the relationship of the 6 leads in the frontal plane. This diagram includes the angles in the frontal plane and the direction of each lead with its negative and positive pole.

The frontal plane corresponds to the radiographic V/D or D/V view of the heart.