J Neurogastroenterol Motil.
2012 Oct;18(4):373-384.
Rectal Hyposensitivity
- Affiliations
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- 1Academic Surgical Unit (GI Physiology Unit), Wingate Institute and Neurogastroenterology Group, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom. m.scott@qmul.ac.uk
Abstract
- Impaired or blunted rectal sensation, termed rectal hyposensitivity (RH), which is defined clinically as elevated sensory thresholds to rectal balloon distension, is associated with disorders of hindgut function, characterised primarily by symptoms of constipation and fecal incontinence. However, its role in symptom generation and the pathogenetic mechanisms underlying the sensory dysfunction remain incompletely understood, although there is evidence that RH may be due to 'primary' disruption of the afferent pathway, 'secondary' to abnormal rectal biomechanics, or to both. Nevertheless, correction of RH by various interventions (behavioural, neuromodulation, surgical) is associated with, and may be responsible for, symptomatic improvement. This review provides a contemporary overview of RH, focusing on diagnosis, clinical associations, pathophysiology, and treatment paradigms.
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