Atrial Premature Complexes
Wandering Pacemaker
AV-nodal complexes
Flowchart: Approach to the Narrow Complex Tachycardia Adapted from ESCnarrowQRS.
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Sinus node rhythms and<unk> 
Junctional Tachycardias
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Supraventricular arrhythmias
Wide complex tachycardia
Narrow complex tachycardia
Fascicular VT
Sinus arrhythmia
Junctional tachycardia
Paroxysmal AV block
AV reentrant tachycardia