Supraventricular Tachycardia with abnormal conduction (“aberrancy”) is often difficult to distinguish from Ventricular Tachycardia. The 2015 AHA guidelines on the management of adults with SVT state that the presence of AV dissociation (i.e., the presence of P waves visible among the QRS complexes at a rate slower than the ventricular rate) or fusion/capture beats “provides the diagnosis of ventricular tachycardia.” Other criteria are suggestive, but not confirmatory. Diagnostic algorithms – Brugada or Vereckei for example, are complicated and can be difficult to apply.