<unk>  (AV)<unk>  is an electrocardiographic finding with features of independent functioning of atria and ventricles.  It is to be remembered that it is only a descriptive term and not a diagnostic endpoint because the AV<unk>  that appears in the electrocardiogram is secondary to some other underlying cardiac rhythm disturbance.  To be accurate, AV<unk>  means that the normal association between atrial and ventricular contraction no longer exists and they are independently driven by different pacemakers, either for a single beat or forever.
Atrioventricular dissociation
Fascicular VT
Sinoatrial arrest
AV reentrant tachycardia
Ventricular escape beat
Left bundle branch block
Paroxysmal AV block
Third degree AV block