Abstract
Introduction and hypothesis
Fecal incontinence (FI) has two primary subtypes: urgency fecal incontinence (UFI) and passive fecal leakage (PFL). The pathophysiology underlying the subtypes is incompletely understood.
Objectives
To compare the bowel habits, physical examinations and pelvic floor anatomical defects in patients with UFI-dominant FI versus patients with PFL-dominant FI.
Study design
This is a retrospective cross-sectional study of female patients who presented with fecal incontinence symptoms to our tertiary urogynecology center. All subjects underwent a comprehensive history, physical examination, 3D-static pelvic floor ultrasound, and 2D-dynamic ultrasound of the posterior compartment. Patients with UFI-dominant FI were compared to patients with PFL-dominant FI.
Results
One hundred forty-five patients were included in the analysis; 57 categorized as UFI-dominant FI, 69 PFL-dominant FI and 19 categorized as having “both” leakage patterns. In comparing bowel habits, patient with UFI-dominant FI had more frequent bowel movements (15.5 ± SD 13.0/week vs. 10.9 ± SD 7.6 /week, p = 0.022) and were more likely to have loose stools (48.2% vs. 26.1%, p = 0.01). No statistically significant differences were observed in the prevalence of external anal sphincter defect (11.3% vs. 17.2%, p = 0.38) or internal anal sphincter defect (11.3% vs. 19%, p = 0.26) between groups. Finally, patients with UFI-dominant FI had a higher incidence of rectal hypermobility (loss of rectal support on Valsalva) (58% vs. 36.9%, p = 0.025).
Conclusion
Patients with urge-predominant FI have increased frequency of bowel movements, looser stools, and increased rectal folding diagnosed via dynamic ultrasound as compared to patients with passive-dominant FI.
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Pincus, J.B., Moss, N.P., Chang, C. et al. Pelvic floor architectural defects in female patients with urge fecal incontinence versus passive fecal leakage: a dynamic ultrasound study. Int Urogynecol J 33, 2133–2141 (2022). https://doi.org/10.1007/s00192-021-04919-3
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DOI: https://doi.org/10.1007/s00192-021-04919-3