Disorder

An interruption or disturbance of the electrical signal between the heart’s upper two chambers (the atria) and lower two chambers (the ventricles)

Re-entry tachycardia arising from the presence of an abnormal electrical connection between atria and ventricles situated within the atrioventricular node

Re-entry tachycardia arising from the presence of an abnormal electrical connection between atria and ventricles situated outside the atrioventricular node