title: Standard limb lead QRS concordance during wide QRS tachycardia. A new surface ECG sign of ventricular tachycardia.
abstract: The differentiation of ventricular tachycardia from supraventricular conducted with aberration constitutes a perennial challenge. We report a new surface ECG clue, hitherto undescribed, the presence of which, during wide QRS tachycardia, indicates that the tachycardia in question is ventricular rather than supraventricular with aberrant conduction.
mesh_terms: D003937:Diagnosis, Differential; D004562:Electrocardiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D013610:Tachycardia / Q000175:diagnosis*; D013617:Tachycardia, Supraventricular / Q000175:diagnosis*