Experience with the Cardial inferior vena cava filter as prophylaxis against pulmonary embolism in pregnant women with extensive deep venous thrombosis.

Objective To report the use of the Cardial inferior vena caval filter as prophylaxis against pulmonary embolism in pregnant women with extensive iliofemoral throm- bosis. Setting Leicester Royal Infirmary. Subjects Four pregnant women with extensive iliofemoral thrombosis, deemed to be at high risk of pulmonary embolism, managed over a period of one year