<prompt> Wide QRS complex is typically seen inBundle branch blockSick sinus syndromeMobitz Type I blockMobitz Type II block  <response>: The differential diagnosis of wide-complex tachycardia includes ventricular tachycardia , PSVT with bundle branch block aberrancy, and preexcited tachycardia see above. In general, these should be managed as ventricular tachycardia until proven other- wise. If the tachycardia is regular and the patient is stable, a trial of intravenous adenosine is reasonable. Ref Harrison 20th edition pg 1443 