Anal Fissure with Low (Hypotensive) Anal Sphincter Pressure
This protocol addresses anal fissures occurring in the setting of low — or hypotensive — anal sphincter pressure. Such fissures may be anteriorly located or present as multiple lesions, a pattern that distinguishes this group from the more common high-pressure presentation.
Clinical scenario
Anal sphincter pressures below the clinically and manometrically accepted normal range define this subtype. Because sphincter hypertension is absent, the therapeutic approach differs substantially from standard fissure management. The anterior location and potential multiplicity of fissures are further features that guide treatment selection.
Treatment approach
Management is conservative and sphincter-preserving — centred on lifestyle modification, topical analgesia, and stool softeners, alongside pelvic floor physiotherapy and biofeedback. Treatment strategies that aim to reduce internal anal sphincter tone are specifically avoided in this setting. The full structured regimen, including sequencing and additional options, is in the complete protocol.
References
DOI: 10.1111/codi.167
- For patients with low sphincter pressure-type anal fissures, biofeedback may be considered.
- Low pressure – anal sphincter pressures below that considered within normal range clinically and or manometrically.
- In addition to lifestyle modification, topical analgesia, and stool softeners, conservative management for low pressure fissures includes pelvic floor physiotherapy and neuromodulation.
- Treatment strategies which aim to reduce internal anal sphincter tone will not be helpful and should be avoided.
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