<unk>  is a form of ventricular<unk>  characterized by a normal PR interval and a long QRS interval with initial slurring of or slow deflection of the QRS complex (a delta wave is present).
Mahaim type preexcitation
Fascicular VT
Isorhythmic A-V dissociation
Ventricular escape beat
Second degree AV block
AV reentrant tachycardia
Third degree AV block
AVNRT Slow/Fast