Regular<unk> 
Rate 50-110 bpm
Three or more ventricular complexes
QRS complexes >120ms
Fusion and capture beats
Accelerated idioventricular rhythm
Assume any wide-complex tachycardia is ventricular tachycardia until proven otherwise 
Wide-complex tachycardia
Regular
Wandering atrial pacemaker
Monomorphic ventricular tachycardia
Narrow-complex tachycardia
PSVT with aberrant conduction: