Inferior vena cava filters are often used for prophylaxis ... [6–8] In a recent study of 240 patients who underwent placement of IVC filters, only 73 (30.4%) had documented plans for filter ...

For these events to take place an increase in venous return must be hypothesized. Ranniger and Switz, 9 in angiographic studies of the inferior vena cava, demonstrated marked constriction of this ...