On an EKG,<unk>  exhibits the following classic criteria: * P-Waves: The p-wave may be inverted in leads II, III and aVF or may not be visible * Narrow QRS complexes (which is consistent with arrhythmias that conduct through the ventricles using the His-Purkinje system and often originate from the atria or AV junction.) It can coexist with other superventricular tachycardias due to the disassociation between the SA node and the AV node. Forms of<unk>  include junctional ectopic tachycardia (JET) and atrioventricular nodal re-entrant tachycardia (AVNRT) which can be distinguished by performing electrophysiological studies.
Junctional tachycardia
Ventricular escape beat
Sinus arrhythmia
Sinoatrial arrest
Automatic tachycardia
Junctional ectopic tachycardia
Paroxysmal tachycardia
Inappropriate sinus tachycardia