This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'Beta blockers mask all effects of hypoglycemia except ? \nSelect and explain. \nA. Sweating, B. Palpitations, C. Dizziness, D. Tremors', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Dizziness Symptoms of hypoglycemia are attributable to :- i) Sympathetic stimulation : Sweating, tremor, tachycardia palpitations and anxiety. These are the warning signs. ii) Cerebral glucose deficiency : Decreased cognitive functions, dizziness and decreased concentration. Use of beta-blockers, especially in diabetics who are taking treatment, may mask typical sympathetic system mediated symptoms of hypoglycemia such as sweating, tremor, tachycardia, and palpitations. Thus, dangerous severe hypoglycemia can occur without any warning signs.", 'role': 'assistant'}]