We performed a national cross-sectional and prospective large epidemiological cohort study in patients with ST. Office- and hospital-based vascular medicine French practitioners enrolled all consecutive patients with a symptomatic ST of the lower limbs at least 5 cm long documented by compression ultrasonography. Follow-up was three months. All events were adjudicated by a central committee.
Between March 2005 and October 2006, 844 patients (median age \[range\]: 65 \[18-98\] years; 547 women) were included. At inclusion, confirmed deep-vein thrombosis and/or symptomatic pulmonary embolism was associated with ST in 24.9% (n=210) of patients. Among the 600 patients with isolated ST (i.e. without deep-vein thrombosis or pulmonary embolism at inclusion), 10.4% (n=56) developed venous thromboembolic complications at three months, including the following symptomatic events: pulmonary embolism (0.4%, n=2), deep-vein thrombosis (2.8%, n=15), extension of ST (3.1%, n=17) and recurrence of ST (1.9%, n=10). These complications occurred despite the use of various anticoagulant strategies in 90.5% (n=540) of patients; four independent risk factors increased the risk of these complications: male sex, cardiac or respiratory insufficiency, history of deep-vein thrombosis or pulmonary embolism and no history of varicose veins.
Study Type
OBSERVATIONAL
Enrollment
844
A three-month follow-up prospective study was performed in the subgroup of patients with symptomatic ST but without deep-vein thrombosis on compression ultrasonography or documented symptomatic pulmonary embolism at inclusion, a group defined as patients with 'isolated ST'.
LEANDRI
Annonay, France
CHANUT
Aubenas, France
GILLET
Bourgoin Jailleu, France
Barrelier
Caen, France
Guenneguez
Dieppe, France
Incidence of confirmed venous thromboembolism at three months.
Time frame: 3 months
Overall mortality at three months
Time frame: 3 months
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