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| Main Authors: | , , , , , , , |
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| Format: | Artículo Open Access |
| Published: |
Wiley
2026
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| Online Access: | https://onlinelibrary.wiley.com/doi/10.1111/codi.70455 |
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Table of Contents:
- Anal sphincter function in conservatively managed rectal intussusception at long‐term follow‐up: A prospective anal acoustic reflectometry study with comparison to healthy volunteer data Alexander O'Connor Matthew Davenport Niels Klarskov Abhiram Sharma Dipesh H. Vasant John McLaughlin Edward Kiff Karen Telford Colorectal Disease Abstract Aim Rectal intussusception (RI), proposed to be a progressive condition, is associated with internal sphincter dysfunction. This study examines sphincter function using anal acoustic reflectometry (AAR) at long‐term follow‐up. Methods A prospective study of conservatively managed patients attending a tertiary pelvic floor unit. Clinical, AAR and symptom severity data were analysed at baseline and follow‐up (>5 years). Patients were grouped into intra‐rectal (Oxford I–II) or intra‐anal RI (III–IV). Data from asymptomatic volunteers were used to estimate the effect of ageing on AAR parameters. Results Twenty‐nine patients (27 female; median age: 66 years) were recruited, with follow‐up at a median of 66 (IQR: 64–67) months. Twelve were diagnosed with intra‐rectal RI and 17 with intra‐anal RI at baseline. No patient developed an external rectal prolapse. There were no differences in quality of life, faecal incontinence or constipation symptoms in either group at follow‐up ( p > 0.05). A non‐significant decrease in opening pressure, a measure of internal sphincter function, was seen in both intra‐rectal (−4.0 cmH 2 O; p = 0.530) and intra‐anal RI (−3.7 cmH 2 O; p = 0.287). In healthy volunteers, opening pressure was associated with age ( r = −0.402; p < 0.001) and a decline of 2.90 cmH 2 O (95% CI: −4.35 to −1.50) would be expected after 5 years. Incremental squeeze opening pressure showed a non‐significant increase in intra‐rectal RI (8.4 cmH 2 O; p = 0.099) and no change in intra‐anal RI (−1.7 cmH 2 O; p = 0.532). Conclusion There were no significant changes in patient‐reported symptoms or anal sphincter function in conservatively managed RI at follow‐up, challenging the concept of a progressive condition with a detrimental impact on sphincter function. 10.1111/codi.70455 http://creativecommons.org/licenses/by/4.0/