<unk>  <unk>  is an<unk>  rhythm where the pacemaking activity of the heart originates from different locations within the<unk>  This is different from normal pacemaking activity where the sinoatrial node (SA node) is responsible for each heartbeat and keeps a steady rate and rhythm. Causes of<unk>  are unclear, but there may be factors leading to its development. It is often seen in the young, the old, and in athletes, and rarely causes symptoms or requires treatment. Diagnosis of<unk>  is made by an ECG.
Wandering atrial pacemaker
Junctional ectopic tachycardia
AV nodal reentrant tachycardia
Ventricular escape beat
Atrioventricular reentrant tachycardia
Ectopic pacemaker
Accelerated idioventricular rhythm
Re-entry ventricular arrhythmia