The Atria

The atria are the chambers in the heart that receive blood from the veins and force it into the ventricles.

The term supraventricular arrhythmia refers to any cardiac rhythm, other than sinus rhythm (including sinus tachycardia and sinus bradycardia), in which both the pacemaker site and conduction path are not confined to the ventricles. The majority of supraventricular arrhythmia are atrial in mechanism.

Common examples of supraventricular arrhythmia include: