Implante de filtro de veia cava com uso de dióxido de carbono como meio de contraste: série de casos

objective: to assess the use of digital subtraction with carbon dioxide (co2 ) for vena cava filter implant. methods: from april 2010 to february 2011, seven patients underwent inferior vena cava filter placement with digital subtraction angiography with the use of co2 as contrast media. all patients had iliac and femoral deep venous thrombosis and contraindications for anticoagulation. results: technical success was achieved in all cases. inferior vena cava e renal veins were identified in all cases. there were no evidences of complications related to the use of co2 during or after the procedure. conclusion: the placement of inferior vena cava filter with co2 and digital subtraction angiography is safe and effective with good results in patients with renal insufficiency and allergy to iodine.