SINGLE-STAGE PROCEDURES FOR ANORECTAL MALFORMATIONS: A SYSTEMATIC REVIEW AND META-ANALYSIS
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In brief
In brief
Systematic review and meta-analysis of 537 patients comparing single-stage versus staged repair for anorectal malformations. Single-stage procedures show 2.2× higher surgical site infection risk but equivalent long-term functional outcomes, supporting their safety in selected patients with perineal or vestibular fistulas.
Written by the GCMD Library team from the article.
Background
The purpose of this study is to describe all published studies of single-stage procedures for anorectal malformations and to perform a meta-analysis of studies that compared single-stage to staged procedures.
Methods
Searches were conducted in Pubmed, Medline, Embase and CENTRAL. Meta-analysis was performed in RevMan and expressed as forest plots with odds ratios (OR) and 95% confidence intervals (CI).
Results
Thirty-eight studies were included in the narrative synthesis. Nine studies were included in the meta-analysis, representing 537 patients. The majority (70%) of patients included in this meta-analysis had either perineal or vestibular fistulas. Surgical site infection (SSI) was defined as any reported infection involving the neo-anus (both superficial infection and dehiscence) and occurred in 51 of the 291 patients who underwent single-stage procedures, and 26 of the 244 patients who underwent staged procedure. Meta-analysis showed a 2.2 times higher risk of surgical site infection (SSI) amongst patients who undergo single-stage procedures (OR 2.22, 95% CI 1.26, 3.92). Six of the 293 patients (2%) who underwent single-stage procedures underwent a rescue ostomy for wound dehiscence. In LMIC the risk of wound dehiscence was three-fold higher in single-stage (36/202) compared to staged procedures (12/126) (OR 3.07, 95% CI 1.42, 6.63). In HIC there was no evidence of an increased risk of wound dehiscence in patients who underwent a single-stage (15/91) compared to a staged procedure (14/118) (OR 1.51, 95% CI 0.65, 3.51). There is no evidence of a difference between single-stage versus staged procedures with regards to functional outcomes including voluntary bowel movements (79/90 versus 111/128), soiling (24/165 versus 20/203) or constipation (27/90 versus 36/128).
Conclusion
This systematic review provides further evidence that single-stage procedures for selected patients with anorectal malformations are safe. Whilst there is evidence of an increased risk of SSI, this did not translate to a significant difference in long-term functional outcomes.
Levels of Evidence
Level II