The study did not demonstrate significant differences between the groups, but it does suggest a benefit in applying papaverine and sildenafil in the anastomosis with already thrombogenetic disease, compared to the nonapplication of antithrombotic drugs. The establishment of thrombosis in the necrotic flaps in the group treated with sildenafil was later than in the group treated with papaverine, with a statistical trend but without becoming significant.

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