Sinoatrial Sinus bradycardia Sinus tachycardia Sinoatrial node re-entrant tachycardia (SNRT) Atrial Wandering atrial pacemaker Atrial tachycardia Unifocal atrial tachycardia (UAT) Multifocal atrial tachycardia (MAT) Paroxysmal atrial tachycardia (PAT) Atrial flutter Atrial fibrillation Junctional Junctional rhythm Junctional tachycardia AV nodal re-entrant tachycardia (AVNRT) Junctional reciprocating tachycardia (JRT) AV reciprocating tachycardia (AVRT) WPW - PR < 0.12 s - Delta wave which either interrupts P or arises immediately after its termination - QRS > 0.12 s - Secondary ST and T wave changes Mahain type (not recognised by AHA/ACCF/HRS because the dg cannot be made with certainty on basis of surface ECG) - Delta-wave LGL syndrome - PQ < 0.12 s Junctional ectopic tachycardia (JET) Ventricular Accelerated idioventricular rhythm Ventricular tachycardia Monomoprhic VT Polymorphic VT Ventricular fibrillation Torsades de pointes Resource(s): Hampton, JR: The ECG Made Easy. Eight Edition. Churchill Livingstone Elsevier, 2013 ECG Learning Centre: ACC/AHA Clinical Competence in ECG Diagnoses