DIFFERENTIAL DIAGNOSIS OF CARDIAC CAUSES OF ATRIOVENTRICULAR BLOCK ( AV BLOCK )

Differential diagnosis of cardiac causes of atrioventricular block ( AV block) are : 
-cardiac inflammation ( lyme disease, sarcoidosis, diphtheria)
-amyloidosis 
-sarcoidosis 
-infectious mononucleosis
-rheumatic fever
-perimyocarditis 
-myocardial infarction 
-congestive cardiac disease