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Background:    There is still a need for progress in the treatment of transsphincteric anal fistulae and the use of herbal medicines seems promising.Aim:    To evaluate the efficacy of  Stryphnodendron adstringens  associated with fistulotomy and primary sphincteroplasty in the treatment of transsphincteric fistulae in rats.Methods:   Thirty Wistar rats were used, which were submitted to transsphincteric fistulas with steel wire 0; after 30 days a treatment was performed according to the group. Group A (n=10) was submitted to fistulotomy; group B (n=10), fistulotomy followed by primary sphincteroplasty with “U” stitch with polyglactin 911 4-0; group C(n=10) , similar to group B, but with the interposition between the muscular stumps of hemostatic sponge soaked in  Stryphnodendron adstringens  extract. Euthanasia was performed after 14 days, resecting a segment of the anal canal for histological analysis, which aimed to evaluate the closure of the fistula, the area of separation of the muscle cables, the inflammatory process and the degree of fibrosis.Results:    No animal had a remaining fistulous tract. About the spacing between the muscle cables, an average of 106.3 µm 2  was observed in group A, 82.8 µm 2  in group B and 51.8 µm 2  in group C (p<0.05). There was no difference between the groups regarding the inflammatory process and, in relation to fibrosis, in group A there was a mean of 0.6, in group B 0.7 and in group C 0.2 (p<0.05).Conclusions:Stryphnodendron adstringens  extract was able to allow less spacing between muscle cables in rats submitted to fistulotomy followed by primary sphincteroplasty, in addition to providing less local fibrosis.

abcd

CAN Stryphnodendron adstringens EXTRACT IMPROVE THE RESULTS OF FISTULOTOMY FOLLOWED BY PRIMARY SPHINCTEROPLASTY IN THE TREATMENT OF TRANSSPHINCTERIC FISTULAE?