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: Pharmacology
Oral anticoagulants are stopped prior to surgery for at least - 
Select and explain. 
A. 1-3 days, B. 3-5 days, C. 8-10 days, D. 6-8 days
D: 6-8 days
Answer: D: 6-8 days 
Explanation: Ans. is 'd' i.e., 6-8 days o Oral anticoagulants are stopped 6-8 days prior to surgery because their duration of action is about 4-6 days. o Therefore if the drug is stopped its action may remain for the next 6 days. o So it is safer to stop them 6-8 days before surgery.