This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Stomach & Duodenum, Subject name: Surgery
[{'content': 'Which of the following management procedures of acute upper gastrointestinal bleed should possibly be avoided? \nSelect and explain. \nA. Intravenous vasopressin, B. Intravenous beta-blockers, C. Endoscopic sclerotherapy, D. Balloon tamponade', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Intravenous beta-blockersRef: Sabiston 20th Edition, Page 1142* Betablockers have no role in active variceal bleed.* They are used only in prevention of re-bleeding in Esophageal varices', 'role': 'assistant'}]