This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: AIIMS 2018, Subject name: Surgery
The given below device is/used for: 
Select and explain. 
A. Pneumatic compression stocking, B. Varicose vein, C. Hypothermia, D. Cellulitis
A: Pneumatic compression stocking
Answer: A: Pneumatic compression stocking 
Explanation: Pneumatic compression stocking is used to prevent DVT in patients with immobilization for longer duration of time. These are helpful in patients at moderate risk for DVT as a prophylactic measure but these are not effective against established thrombosis. It is used especially in bariatric population and can be used in their room, operation room or post-operative area. - DVT should be initially managed by heparin or low-molecular-weight heparin. - Long-term management is done by anti-coagulation with warfarin. - Inferior vena cava filter is indicated for patients not benefiting from medical treatment.