Anette is 65 years old and presents with a history of right calf pain describing it was acute in onset, sharp and localised since yesterday. Examination reveals there is associated calf swelling of 40cm circumference in the right calf, comparable to 35cm in the left along with right sided pitting oedema. She has no other risk factors and thus her Wells score is 2. Appropriate referral is arranged and a Deep Vein Thrombosis (DVT) has been confirmed which is being adequately treated with an anticoagulant.
Which of the following statements regarding management of DVT is least correct?