• G Belcaro, M R Cesarone, M Dugall, B Feragalli, E Ippolito, M Corsi, M Hosoi, U Cornelli, A Ledda, G Gizzi, R Luzzi, and M Georgiev.
• Irvine3 Labs, Department of Biomedical Sciences, Chieti - Pescara University, Pescara, Italy. cardres@abol.it.
• Panminerva Med. 2011 Sep 1; 53 (3 Suppl 1): 3-11.

AimThe aim of the present, randomized, placebo controlled study was to assess the dose-dependent symptom reduction efficacy, safety and tolerability of heparin-spraygel (Viatromb 2.400 IU/g heparin spraygel) in patients with superficial vein thrombosis (SVT) of the lower limbs.MethodsA number of clinically relevant objectives; time to onset and intensity of symptoms' reduction reflected also by rescue medication consumption were considered and assessed.ResultsPain reduction between the two time-points (days 0 and 7) was significant within both treatment groups (active drug and placebo). However, subjects treated with active drug reported a mean pain reduction (VAS) of 76.21 mm (93.13% decrease); in subjects treated with placebo it was 50.36 (61.35%) mm (P<0.0001). The difference in pain reduction between the active drug and placebo groups was significant (P<0.05). The proportion of responders (subjects with at least 50%reduction in pain (VAS) on day 7 and day 14) was higher within subjects treated with Viatromb (P<0.05). The extension of erythema, evaluated by planimetry indicated a significantly higher reduction (day 0 to 7 and 0 to 14) in Viatromb-treated subjects in comparison with placebo. In the Viatromb group, the reduction in thrombus size was remarkable towards placebo (P<0.05). Reduction of edema and pain (VRS) had comparable time courses. Both investigator's and subject's global assessment of efficacy were significantly better with Viatromb. No adverse events or reactions were reported during the study and the follow up period.ConclusionViatromb was significantly more effective than placebo in the symptomatic treatment of SVT.

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