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Colorectal SurgeryManagement
Perianal Abscess and Fistula Management (ASCRS)
Perianal Abscess and Fistula Management (ASCRS): Perianal Pain/Swelling → Abscess Present? → Incision & Drainage → Fistula Classification → Fistulotomy.
Pathway Overview
8 steps
Algorithm Steps
8 total
01Start 02Decision Abscess Present?
- Fluctuance, erythema, fever
03Action Incision & Drainage
Bedside or OR based on location/size
- Perianal: bedside OK
- Ischiorectal/horseshoe: OR
04Decision Fistula Classification
- Simple (superficial, low trans)
- Complex (high, multiple, Crohn's)
05End Fistulotomy
Low fistula, adequate sphincter
06End Seton or LIFT/Advancement Flap
Sphincter preservation
07End Seton + Medical Therapy
Anti-TNF, drain, definitive later
08Action Fistula Evaluation
MRI pelvis if complex, EUA
- Path rejoins step 04Shared downstream outcome
Guideline Source
ASCRS Clinical Practice Guidelines: Perianal Abscess and Fistula-in-Ano
Clinical Safety Information
Clinical Decision Support — Not a Substitute for Clinical Judgment
Individual patient factors may require deviation from these recommendations.
Known Limitations
- Crohn's disease changes management
- Complex fistulas require specialized care
- Incontinence risk with fistulotomy
Applicable Regions
USAUUKEU
UK: ACPGBI guidelines similar
US: ASCRS guidelines
Version 1Next review: 2028-01-01
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Frequently Asked Questions
What is the Perianal Abscess and Fistula Management (ASCRS)?
The Perianal Abscess and Fistula Management (ASCRS) is a management clinical algorithm for Colorectal Surgery. It provides a structured decision tree to guide clinical decision-making, based on ASCRS Clinical Practice Guidelines: Perianal Abscess and Fistula-in-Ano.
What guideline is the Perianal Abscess and Fistula Management (ASCRS) based on?
This algorithm is based on ASCRS Clinical Practice Guidelines: Perianal Abscess and Fistula-in-Ano (DOI: 10.1097/DCR.0000000000001883).
What are the limitations of the Perianal Abscess and Fistula Management (ASCRS)?
Known limitations include: Crohn's disease changes management; Complex fistulas require specialized care; Incontinence risk with fistulotomy. Individual patient factors may require deviation from these recommendations.
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