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A Journal on Angiology
Official Journal of the , the International Union of Phlebology and the
Indexed/Abstracted in: BIOSIS Previews, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
Impact Factor 0,899
International Angiology 2004 June;23(2):100-7
Effects of defibrotide in patients with chronic deep vein insufficiency. The PROVEDIS study
Coccheri S. 1, Andreozzi G. M. 2, D'Addato M. 3 †, Gensini G. F. 4, for the PROVEDIS Study Group
1 Unit of Angiology, University of Bologna, Bologna, Italy
2 Angiology Care Unit, University Hospital, Padua, Italy
3 Unit of Vascular Surgery, University of Bologna, Bologna, Italy
4 Department of Internal Medicine and Cardiology, University of Florence, Florence, Italy
Aim. In the present study the effect of defibrotide, an antithrombotic and profibrinolytic agent, was investigated in patients with chronic venous insufficiency (CVI) due to deep vein obstruction and/or reflux (chronic deep vein insufficiency, CDVI).
Methods. The study was a multicenter, randomized, double blind placebo controlled trial in which only patients with CDVI confirmed by ultrasound were enrolled. All patients were treated with adequate elastic compression and randomized to receive either oral defibrotide (800 mg/die) or matching placebo for 1 year. Patients with active or previous leg ulcer were excluded.
Results. A total of 288 patients were randomized and 159 completed the study. At baseline ultrasound investigation, obstructive changes were found in 2/3 of all patients thus ascertaining a post-thrombotic syndrome (PTS). The primary endpoint, ankle circumpherence, was significantly reduced under defibrotide from day 120 throughout 360. Scores for pain and edema were improved. The number of episodes of superficial thrombophlebitis and deep vein thrombosis was significantly lower under defibrotide (n=2) than under placebo (n=10). The majority of these events occurred in the subset of patients with documented PTS.
Conclusion. Treatment with defibrotide in addition to elastic compression in patients with objectively assessed CDVI, mostly due to PTS, resulted in clinical benefits and prevented thrombotic complications harmful to the limb conditions.