Assume<unk>  until proven otherwise
See also rhythm diagnosis in regular wide complex<unk> ycardia
Ventricular tachycardia
Assume any wide-complex tachycardia is ventricular tachycardia until proven otherwise 
Junctional tachycardia
Regular
Wide-complex tachycardia
Monomorphic ventricular tachycardia
Torsades de pointes
PSVT with aberrant conduction: