This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anaesthesia
28 year old female who is a known case of bipolar disorder on lithium therapy is posted for varicose vein repair. What should be done regarding lithium 
Select and explain. 
A. Stop lithium 24 hours prior to surgery, B. Continue lithium till the day of surgery, C. Replace lithium with diazepam, D. None
A: Stop lithium 24 hours prior to surgery
Answer: A: Stop lithium 24 hours prior to surgery 
Explanation: Lithium has to be stopped 24 hrs prior to surgery.