If the limb lead that was supposed to be attached to the right arm is put on the left arm — and vise-versa — a characteristic appearance will be seen on ECG that includes: Predominantly ...

First, the standard 12-lead ECG is a 10-second strip ... If each small box is equal to 0.04 seconds or 1 mm, then the standard ECG speed is 1 mm per 0.04 seconds, or 25 mm per second.

1 Department of Family Medicine, University of Washington ... The ability to identify an abnormality on the 12-lead ECG, suggestive of underlying cardiac disease associated with sudden cardiac death ...

Iatrogenic embolisms during cardiac intervention are not discussed in this article. Table 1. ECG markers and their association with stroke. ECG phenotype Prevalence in general population ...