Since Leads 1, aVL, V5 and V6 all view the lateral wall of the left ventricle they are considered contiguous. that placement they “look through” the right ventricle and see the septal wall.

What leads are contiguous leads?

Contiguous leads are next to each other, anatomically speaking. They are all touching, and in the same general region (like the left ventricle, for example). For contiguous leads, I came up with my “Two-Fer” rule. The Two-Fer Rule means you need two leads looking at the same area of the heart to show the same problem.

What are leads V1 V2 V3 V4 V5 and V6 known as?

The precordial, or chest leads, (V1,V2,V3,V4,V5 and V6) 'observe' the depolarization wave in the frontal plane.