This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fluid and electrolytes, Subject name: Medicine
[{'content': 'In hyperkalemia with bradycardia treatment is - \nSelect and explain. \nA. Calcium gluconate, B. Salbutamol, C. Steroid, D. K+resin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The change in serum postassium affects the repolarisation pa of the action potential. Hyperkalaemia leads to a flattening of the angle of this pa of the action potential which can lead to a slower hea rate. beta 2-agonists, most commonly albuterol, are effective but underused agents for the acute management of hyperkalemia. Hyperglycemia is a side effect, along with tachycardia. (ref : harrisons 19E pg-312)', 'role': 'assistant'}]