1. 1st Degree AV if the R is far from P, then you have a first degree
2. 2nd Degree AV longer, longer, longer, drop (the QRS), then you have a wenkebach
type 1
3. 2nd Degree AV if some Ps don't get through, then you have a Mobitz 2
type 2 (missing QRS)
4. 3rd Degree AV if Ps and Qs don't agree, then you have a third degree
5. junctional signs -p is inverted and too close
-p is missing/burried
-p is inverted and in the ST segment
-PR<0.12
-QRS<0.12
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