This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Pharmacology
[{'content': 'Which of the following antidotes is used for calcium channel blockers overdose? \nSelect and explain. \nA. Atropine, B. Calcium gluconate, C. Adrenaline, D. Digoxin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (B) Calcium gluconate(Ref: Harrison 17th/e p35)Treatment of Calcium channel blocker poisoning*Calcium and glucagon for hypotension and symptomatic bradycardia.*Dopamine, epinephrine, norepinephrine, atropine, and isoproterenol are less often effective but can be used adjunctively.*Amrinone, high-dose insulin (with glucose and potassium to maintain euglycemia and normokalemia), electrical pacing, and mechanical cardiovascular support for refractory cases', 'role': 'assistant'}]