Nurturing Life Sciences
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#Unit 13. Methods in Biology
Einthoven’s Law
Lead I potential Lead III potential + = Lead II potential
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Three unipolar limb leads (Augmented limb leads):
VR (right arm), VL (left arm) and VF (left foot).
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When the positive terminal is on the right arm, the lead is known as the aVR lead.
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When the positive terminal is on the left arm, the lead is known as the aVL lead.
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When the positive terminal is on the left leg, the lead is known as the aVF lead.