This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other topics and Adverse effects, Subject name: Anatomy
[{'content': 'Urgent treatment of procainamide toxicity is: \nSelect and explain. \nA. Calcium chelation, B. KCI, C. Nitroprusside, D. Sodium lactate', 'role': 'user'}, {'content': 'Answer: D \nExplanation: (Ref: CMDT-2010/1445) Pressor agents (to reverse hypotension) and sodium lactate (to reverse arrhythmias) are indicated for the treatment of procainamide toxicity.', 'role': 'assistant'}]