Electrocardiography (ECG) is employed to determine the type of second-degree atrioventricular  (AV) block present. Follow-up ECGs and cardiac monitoring are appropriate.
Second degree AV block diagnostic study of choice
Third degree AV block diagnostic study of choice
Junctional tachycardia other diagnostic studies
Ventricular tachycardia diagnostic study of choice
Pulseless ventricular tachycardia diagnostic study of choice
Wide complex tachycardia differential diagnosis
Second degree AV block other diagnostic studies
Catecholaminergic polymorphic ventricular tachycardia diagnostic study of choice