Cost-effectiveness of early placement of vena cava filters to prevent symptomatic pulmonary embolism in patients with contraindications to prophylactic anticoagulant.

The cost of using a vena cava filter to prevent PE for those who have contraindications to prophylactic anticoagulation within 3 days of injury is prohibitive, unless such contraindications remain for longer than 7 days. (Australian New Zealand Clinical Trials Registry no.: ACTRN12614000963628).