Placement:

• Indication: acute DVT with contraindication to anticoagulation or failure of anticoagulation, history of DVT and upcoming surgery, etc.

• Extent of acute DVT.

• Creatinine level

• No specific INR or platelet threshold

Retrieval:

• Indication: now therapeutic on Coumadin, no DVT on PVL

• Creatinine level

• INR < 3; Platelets > 50