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
Urgent treatment of procainamide toxicity is: 
Select and explain. 
A. Calcium chelation, B. KCI, C. Nitroprusside, D. Sodium lactate
D: Sodium lactate
Answer: D: Sodium lactate 
Explanation: (Ref: CMDT-2010/1445) Pressor agents (to reverse hypotension) and sodium lactate (to reverse arrhythmias) are indicated for the treatment of procainamide toxicity.