Temporary inferior vena cava filter for deep vein thrombosis and acute pulmonary thromboembolism: effectiveness and indication.
Although the temporary inferior vena cava filter (IVC-F) is being used increasingly for protection against pulmonary thromboembolism (PTE), indications for its use are not established. Our strategy for the prevention of PTE is: (1) contraindication or failure of anticoagulation: permanent IVC-F; (2) for patients with residual proximal deep vein thrombosis (a) who have permanent risk factor: permanent IVC-F; (b) who have transient risk factor: temporary IVC-F; (3) others: no IVC-F. Temporary IVC-F was also implanted in deep vein thrombosis (DVT) patients without PTE who were preoperation or had floating thrombus. We investigated the outcome of patients given a temporary IVC-F versus those given a permanent IVC-F to clarify the efficacy and our strategy for implantation of a temporary IVC-F. Subjects were 12 men and 38 women with acute PTE and/or floating DVT admitted to our hospital between April 1999 and April 2002. Patient age was 25-91 years (mean 63 years). Eighteen patients were given a permanent IVC-F (group A) and 32 patients were given a temporary IVC-F (group B) as primary treatment, according to our criteria. There were no major complications in either group. Mortality after implantation of the IVC-F was 35% (6/17) in group A and 16% (4/25) in group B, with no significant difference (P = 0.14). Pulmonary thromboembolism recurred in 18% (3/17) of group A patients but in no group B patients (P = 0.10). All recurrences resulted in death. The 14 patients in group B who were not given a permanent IVC-F after removal of the temporary IVC-F survived. The temporary IVC-F can be used safely in patients with venous thromboembolism and is efficacious in preventing recurrence of PTE. Prognosis after removal of the temporary IVC-F is excellent.
Kai
Ryuichi
R
Department of Cardiovascular Medicine, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan. ryuichi@hsp.md.shinshu-u.ac.jp
Imamura
Hiroshi
H
Kumazaki
Setuo
S
Kamiyoshi
Yuichi
Y
Koshikawa
Megumi
M
Hanaoka
Takeshi
T
Kogashi
Kaoru
K
Koyama
Jun
J
Tsutsui
Hiroshi
H
Yazaki
Yoshikazu
Y
Kinoshita
Osamu
O
Ikeda
Uichi
U
D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011655:Pulmonary Embolism / Q000401:mortality / Q000517:prevention & control*; D055502:Secondary Prevention; D016306:Vena Cava Filters; D020246:Venous Thrombosis / Q000628:therapy*