Features in our of ventricular tachycardia are all the following except: (A) AV dissociation, (B) Capture/fusion beat, (C) Good response to carotid sinus massage, (D) A history of myocardial infarction
Answer is C. Features in our of ventricular tachycardia are the D/D of broad complex tachycardia : History of Myocardial Infarction AV dissociation (pathognomonic) Capture/fusion beats (pathognomonic) Extreme left axis detion Very broad QRS complexes No response to carotid sinus massage or IV adenosine Ref - Harrison&;s internal medicine 20e pg1750