What Is an Anorectal Fistula?

Perianal fistulae

Perianal fistula

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Perianal fistulae

* Refers to the chronic septic infection wounds formed around the anus, with small wounds, deep wounds, accumulation of pus or even feces in the wounds, and

Perianal fistulae

* Refers to a chronic suppurative infection wound formed around the anus, characterized by small wounds, deep wounds, accumulation of pus or even feces in the wound, and intermittent outflow.

* Because the infectious wound cavity or wound can be connected or not connected with the anal canal or rectum, the term "perianal fistula" actually includes two diseases: perianal fistula and perianal suppurative sinus.

(I) Cause

* Improper treatment of anal sac infection causes new damage to the sac wall, perianal abscess spontaneous ulceration or poor drainage after incision and drainage, all easily cause infection spread and difficult to eliminate, and even invade the anal canal or rectum to form perianal fistula .

* When rectal prosthesis is restored and fixed by injecting alcohol around the rectum, excessive alcohol consumption or injecting alcohol into the intestinal wall by mistake will cause inflammatory necrosis of the rectal wall, resulting in this disease.

(Two) symptoms

* At the beginning of the disease, the patient is rushed to the back and has difficulty in defecation. He often licks and bites the anus and rubs the hips, checks for swelling and pain around the anus, and continuously discharges pus or feces from the perianal fistula.

* In the early stage of formation, the skin of the anal area is often stuck by pus and feces; as the course of the disease prolongs, the amount of pus outflow decreases.

* If it communicates with the anal canal or rectum, the stool is discharged from the external mouth, and the fistula canal is invaded and narrowed.

Canine perianal fistula:

(Three) diagnosis

* The diagnosis can be confirmed based on the opening of the perianal area that has not been healed for a long time, and the pus or feces are constantly flowing. However, it should be distinguished from the primary anal sac disease. Anal sac disease mainly occurs at the anal sac, and the perianal fistula can occur at any part of the anal ring.

(D) Treatment

* According to the pus or feces discharged from the external mouth of the fistula before operation, determine whether the fistula is connected to the anal canal or rectum.

* In case of perianal purulent sinus, after thoroughly flushing with disinfectant and antiseptic solution, the sinus is completely removed, and the wound cavity and wound are properly sutured to ensure smooth drainage.

* If it is a perianal fistula, enema is used to empty the rectal faeces. Use your fingers to determine the inside of the fistula and insert gauze before the inside of the fistula to avoid fecal contamination during the operation. Then thoroughly rinse the fistula with disinfectant and antiseptic solution, remove the fistula wall and all necrotic tissue, spiral suture the anal canal or rectal wall, suture the wound cavity and the feasible part of the wound, open the wound properly, and ensure smooth drainage.