To study the effect of urgotul on postoperative perianal abscess.

A total of seventy two patients with perianal abscess enrolled in hospital from June 2014 to June 2015 were randomized in double-blind manner to trial group (36 cases) and control group (36 cases). The trial group patients were given urgotul to drain the exudates after operation, while the control group were treated with traditional disinfection. The pus of perianal abscess in the two groups were bacterially cultured. Post-operative pain and days of wound healing were also compared.

Bacterial culture was positive in 64 cases, with a total detection rate of 88.9%. Ninety-six strains of pathogens were isolated from the 72 patients, including 87 (90.6%) strains of gram-negative bacteria, 9 (9.4%) strains of gram-positive bacteria. Mixed infection accounted for 45.3% (29/96), and the most common was Escherichia coli mixed with other bacteria. Escherichia col were the top pathogens isolated, accounting for 54.2%, followed by Klebsiella pneumoniae of 16.7%. Patients in the trial group had less pain at 4, 6 d postoperatively (t=3.64, 3.61, both P<0.01). The days of wound healing in the trial group were significantly less than the control group [(24.5 ±4.7) d vs (28.4 ±6.5) d, t=2.92, P<0.05)].

Perianal abscess is mainly mixed infection with gram-negative bacterial. Urgotul can relieve the postoperative pain of patients with perianal abscess and reduce the days of wound healing.