This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
[{'content': 'Wide QRS complex is typically seen in \nSelect and explain. \nA. Bundle branch block, B. Sick sinus syndrome, C. Mobitz Type I block, D. Mobitz Type II block', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 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', 'role': 'assistant'}]