Augmented Vector Left

**Semantic type:** Spatial Concept

**Definition:** An augmented unipolar electrocardiogram limb lead in which the positive (black) electrode is situated on the left thoracic limb and the negative electrode is a combination of the right thoracic limb (white) electrode and the left pelvic limb (red) electrode. Measures the electrical activity of the electrode on the left thoracic limb.

**Synonyms:** - LEAD aVL