This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hematology, Subject name: Pharmacology
Anticoagulant of choice for heparin induced thrombocytopenia is? 
Select and explain. 
A. Lepirudin, B. Low molecular weight heparin, C. Abciximab, D. Warfarin
A: Lepirudin
Answer: A: Lepirudin 
Explanation: Drug of choice for HIT syndrome are Direct thrombin inhibitor : Lepirudin. Direct Thrombin Inhibitor : Hirudin Lepirudin Bivalirudin Argatroban Melagatran Injectables Dabigatran : given orally Warfarin takes 4-5 days to manifest it's action.