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
Anticoagulant of choice for prophylaxis of pulmonary thromboembolism is: September 2011 
Select and explain. 
A. Heparan sulfate, B. Protamine sulfate, C. Low molecular weight heparin, D. Warfarin
C: Low molecular weight heparin
Answer: C: Low molecular weight heparin 
Explanation: Ans. C: Low molecular weight heparin Small fixed doses of heparin are given deep subcutaneously to prevent venous thromboembolism. LMW Heparins are prepared from native heparin.