Atrioventricular Reciprocating Tachycardia [AVRT]
Re-entry tachycardia arising from the presence of an abnormal electrical connection between atria and ventricles situated outside the atrioventricular node
Cardiac
Atrioventricular Septal Defect
A defect (hole) involving both the atrial and ventricular septums. The mitral and tricuspid valves are also abnormal.
Atrioventricular Valve
One of the valves which control blood flow from the atriums to the ventricles, and prevent backflow. (see ‘Mitral Valve’ and ‘Tricuspid Valve’).