STEMI contiguous leads

1. At least 2 mm ST-elevation in leads V1-V3 in at least two contiguous leads; OR
2. At least 1 mm ST-elevation in at least two other anatomically contiguous leads; OR
3. 12-lead ECG computer interpretation of STEMI and paramedic agrees.

Regarding what is considered contiguous we can utilize the photos attached. The well-known groupings of contiguous leads:

I/aVL – High Lateral

II/III/aVF - Inferior

V1/V2 - Septal

V3/V4 - Anterior

V5/V6 – Low Lateral

V7/V8/V9 - Posterior

But looking at the other anatomical picture that better shows where the different leads are obtaining their view of the heart. V2 and V3 are considered contiguous and are looking at the Anteroseptal view of the heart while V4 and V5 are also considered contiguous and are looking at the Anterolateral view of the heart.

It is important to note here, however, that while I/aVL and V5/V6 are all considered lateral, they are looking at different parts of the heart and are not considered contiguous with each other.

Essentially, the definition you provided is correct; with the chest leads, if they are consecutively numbered, they are contiguous.