Pericarditis - What's the ECG?

Oscultation of the heart is not yet here int an 22. It's still important because, you know, i've picked up a couple over the last few years just with the rub. I'd like to first go over the e c g stages, or progression of changes seen with pericarditus. And how to distinguish those e c g findings from a c s and early repullFirst go over the four stages of e c g changes in each patient. Stage one is that classic s t elevation diffusely,. Then stage two is the normalization of the p r s t ments; then stage three is the t wave inversions. And then finally, stage four