A<unk>  <unk>  is a tachycardia or rapid rhythm of the heart in which the origin of the electrical signal is either the atria or the AV node.  These rhythms, by definition, are either initiated or maintained by the atria or the AV node.  This is in contrast to ventricular tachycardias, which are rapid rhythms that originate from the ventricles of the heart, that is, below the atria or AV node.  The term<unk>  encompasses a large number of arrhythmias arising from the atria and the AV node, and the term<unk>  is often incorrectly applied only to the subgroup of AV nodal re-entrant tachycardias.
Supraventricular tachycardia
Wide complex tachycardia
Sinus arrhythmia
Narrow complex tachycardia
Supraventricular arrhythmias
Fascicular VT
Ectopic atrial rhythm
Junctional tachycardia