This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pre Anesthetic Evaluation, Subject name: Anaesthesia
Lithium therapy must be stopped how many hours before surgery:- 
Select and explain. 
A. 24 hrs, B. 48 hrs, C. 72 hrs, D. 96 hrs
A: 24 hrs
Answer: A: 24 hrs 
Explanation: Lithium therapy is stopped 24-48 hr prior to surgery since it may potentiate neuromuscular blockers