• AV junction consists of the compact AV node and transitional cell zone (connecting AV node to atrial myocardium).
• Junctional arrhythmias arise from the following mechanisms:
Premature junctional beat (e.g. premature junctional beat and junctional geminy)
Junctional escape beat (e.g. junctional escape beat or rhythm)
Tachycardic junctional ectopic beat (e.g. junctional tachycardia)
Reentry (e.g. AVNRT)
Block (e.g. AV block)
• Examples of junctional arrhythmias are listed below.
