Atrial Tachycardia
A type of arrhythmia that begins in the heart’s upper chambers (the atria) and causes a very fast heart rate of 160 to 200 beats a minute. A resting heart rate is normally 60 to 100 beats a minute
Disorder
Atrioventricular Block
An interruption or disturbance of the electrical signal between the heart’s upper two chambers (the atria) and lower two chambers (the ventricles)
Atrioventricular Nodal Re-Entry Tachycardia [AVNRT]
Re-entry tachycardia arising from the presence of an abnormal electrical connection between atria and ventricles situated within the atrioventricular node