The North Pacific Surgical Association
Outcomes of anal fistula surgery in patients with inflammatory bowel disease

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Abstract

Background

Anal fistulas in patients with Crohn's disease are especially difficult to manage because of nonhealing and incontinence. We reviewed our outcomes for the newer sphincter-preserving techniques of anal fistula plug and fibrin glue compared with standard treatments of advancement flap closure and seton drain insertion.

Methods

This was a retrospective study of patients with inflammatory bowel disease treated for high transsphincteric anal fistulas. The primary outcome was healing and continence at 12 weeks postoperatively.

Results

Between 1997 and 2009, 51 patients with anal fistulas and inflammatory bowel disease were identified in the St Paul's Hospital Anal Fistula Database. Postoperative healing rates at 12 weeks for the fistula plug, fibrin glue, flap advancement, and seton drain groups were 75%, 0%, 20%, and 28%, respectively. Continence scores were not altered by these procedures.

Conclusions

Closure of the primary fistula opening in patients with inflammatory bowel disease using a biologic anal fistula plug had improved healing compared with fibrin glue, seton drain, and flap advancement. Given its low morbidity and relative simplicity, the anal fistula plug should be considered for treating high transsphincteric anal fistulas in patients with inflammatory bowel disease.

Section snippets

Methods

All IBD patients treated for anal fistulas by a single colorectal surgeon at St Paul's Hospital, University of British Columbia, from January 1997 to January 2009, were identified from a database.

Simple fistulas were defined as low fistulas including subcutaneous, intersphincteric, and low transsphincteric fistulas. Low transsphincteric fistulas involved the lower third of the external anal sphincter mechanism. Conversely, complex anal fistulas were defined as Crohn's fistulas, low compromised

Results

Fifty-one patients with high transsphincteric fistulas concomitant with IBD were included. Table 1 shows demographic information. The median age was 39 years (range, 21–66 y). There was no significant difference in age or sex between the treatment groups.

Healing rates at week 12 in patients with IBD are reported in Table 2 and range from 0% for fibrin glue to 75% for the fistula plug. Healing rates were not statistically significantly different between the 4 treatment groups. Healing rates at

Comments

Complex fistulas are notoriously difficult to manage and particularly so in patients with Crohn's disease. The tendency for nonhealing and nonsphincterotomy strategies including long-term seton drains results in a poor chance of permanent fistula closure in these patients. We retrospectively evaluated healing of high transsphincteric anal fistulas in IBD patients using the newer treatment techniques (fistula plug and fibrin glue), comparing them with conventional treatments (flap advancement

References (11)

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