Abstract
Objective: To investigate the relation between initial symptoms and long-term sequelae in first-time deep venous thrombosis (DVT). Design: Follow-up study of patients 6 years after an episode of suspected symptomatic DVT. Setting: Vascular laboratory, University Hospital of Lund. Patients: 66 patients, 19 with femoral DVT, 20 with calf DVT and 27 with normal phlebograms at initial investigation. Main outcome measures: Symptoms and signs of chronic venous insufficiency (CVI), foot volumetry and measurement of plasminogen activator inhibitor 1 (PAI-1) activity. Initial clinical signs and results at phlebography were compared with findings at follow-up. Results: Of patients with DVT, 11 (28%) had been treated for a recurrent DVT during follow-up. No relation was found between initial signs of DVT and late signs of CVI. Patients with DVT had significantly more signs of CVI but symptoms did not differ between the groups. Mean levels of PAI-1 activity were similar in the three groups, and patients with recurrent DVT did not differ. Refilling flow was related to the clinical CVI-score, and expelled volume was inversely related to the extension of DVT at phlebography. Conclusion: The recurrence rate is high in first-time DVT, but symptoms are mostly mild as long as after 6 years. There is a poor correlation between symptoms of CVI and objective findings. The late development of CVI cannot be predicted from the clinical signs in the acute phase. Levels of PAI-1 do not correlate with the degree of CVI.
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