The elderly population is particularly exposed to risk of venous throm
boembolism because the risk of thrombosis increases with age but also
because of the side effects of anticoagulant therapy. Clinical signs a
re neither sensitive nor specific and systematic screen for deep vein
thrombosis in elderly patients could be justified using noninvasive te
chniques such as echo-Doppler or assay of D-Dimers. The aim of this st
udy was to determine the prevalence of venous thrombosis diagnosed by
echo-Doppler screening in a population of institutionalized elderly su
bjects. The frequency of risk factors and the cost of screening and su
bsequent health care were also evaluated. This study included 96 patie
nts who underwent systematic echo-Doppler measurements. Clinical, biol
ogical and echographic data were recorded on individual file-cards for
analysis. The prevalence of deep vein thrombosis diagnosis was 13.5%
(13/96). All the deep vein thromboses discovered were in the popliteal
area. No high risk group was found and there was found and there was
no significant link with clinical signs or the level of D-Dimers. The
cost of diagnosis and treatment in the particular conditions of our st
udy were 5000 and 10,700 FRF respectively for each deep vein thrombosi
s diagnosed. The cost of diagnostic screening and treatment should be
considered in light of the life expectancy and quality of life in this
population. Thus in elderly institutionalized subjects, it would appe
ar not to be reasonable to undertake systematic screening for venous t
hrombosis using echo-Doppler of D-Dimer assay (J Mal Vasc 1994; 19: pa
ges 289-293).