What are the three phases of anticoagulant therapy in a patient with deep vein thrombosis (DVT)?

By William Aird

  • Initiation phase: administration of anticoagulant after diagnosis of DVT, and consisting of parenteral or full dose oral anticoagulation for 5-21 days, depending on anticoagulant used.
  • Treatment phase: administration of anticoagulation following initiation phase, consisting of anticoagulation administered at standard therapeutic doses and considered complete after 3 months of anticoagulation.
  • Extended phase: administration of anticoagulants without pre-planned stop date, at full or reduced dose, as secondary prevention (to reduce recurrent DVT).

Another perspective: