Premature atrial contraction
Premature junctional complex
Premature ventricular contraction
Second degree AV block type II
Differential includes ischemic events, electrolyte abnormalities, and medication overdoses in addition to rheumatologic conditions[3][4]
Third degree AV block
Anterior MI
First degree AV block
Rheumatic fever
Wide-complex tachycardia
Myocarditis