Clinical comparative study of two kinds of extra-dissection and loose seton operation in the treatment of complex anal fistula complicated with abscess

Abstract

Objective To compare the clinical efficacy and safety of second-stage and one-stage extra-dissection and loose seton operation in the treatment of complex anal fistula complicated with abscess. Methods From May 2015 to December 2016, 100 patients with complex anal fistula complicated with abscess were chosen in the First People's Hospital of Wuyi County.The patients were randomly divided into two groups, with 50 patients in each group.The control group received second-stage extra-dissection and loose seton operation, and the observation group received one-stage extra-dissection and loose seton operation.The clinical effects, operation time, wound healing time, hospital stay and the incidence of complications after operation of the two groups were compared. Results The total effective rates of the control group and the observation group were 94.00%, 96.00%, respectively, there was no statistically significant difference between the two groups(χ2=8.78, P>0.05). The operation time, wound healing time and hospital stay of the observation group were shorter than those of the control group, and the differences were statistically significant(t=3.72, 2.96, 3.40, all P 0.05). Conclusion Second-stage and one-stage extra-dissection and loose seton operation in the treatment of complex anal fistula complicated with abscess has the same clinical effects and safety; but one-stage extra-dissection and loose seton operation can efficiently shorten the operation time and speed up the postoperative rehabilitation. Key words: Rectal fistula; Abscess; Extra-dissection; Loose seton; Comparative effectiveness research