EMS 12-Lead

What. The. HECK?! But there is a short answer -- and it's actually just a number. And as the title suggests, the answer to this case is...

By now you can predict the QRS axis in the frontal plane within 15 degrees as long as you have an equiphasic (or isoelectric) lead in the...

In Part 4 I promised that I’d show you a fascinating relationship between the standard 12-lead ECG and the hexaxial reference system. You...

By now you should have a fairly good grasp of how the hexaxial reference system is derived from the first 6 leads of the 12 lead ECG....

In Part 2 we discussed the heart’s mean electrical vector and how Einthoven’s Triangle (leads I, II, and III) can be redrawn to form the...