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Sonographic predictors of obstructive defecatory dysfunction

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Abstract

Introduction and hypothesis

We aimed to evaluate the association between obstructive defecatory symptoms in women with levator ani deficiency (LAD), worsened minimum levator hiatus measurements, widened anorectal angle (ARA), and increased levator-plate descent angle (LPDA).

Methods

Using a cross-sectional study design, patients who had undergone 3D endovaginal ultrasound (3D EVUS) imaging of the pelvic floor were sampled and categorized into two groups: those with and those without obstructive defecatory symptoms (ODS) based on their Colorectal and Anal Distress Index (CRADI-8) questionnaire. The levator ani (LA) muscle was scored based on severity of defect. ARA and LPDA were measured and dichotomized (ARA ± 170°; LPDA ± 9°.

Results

One hundred patients were analyzed: 52 asymptomatic and 48 with ODS. The mean (standard deviation ) age was 59 years (SD ±14.97). There was no difference in the distribution of LAD severity between groups (p = 0.1438) or mean minimal levator hiatus (MLH) (p = 0.3326). ARA and LPDA were significantly different in those with ODS compared with their asymptomatic counterparts (p < 0.0001 and 0.0004, respectively) (Table 1). On multivariable logistic regression, ARA and LPDA were included in the final model. Patients with an ARA >170° had seven times the odds of ODS than those with ARA ≤170° [odds ratio (OR) = 7.01, 95 % confidence interval (CI) 2.30–21.35; p = 0.0006). Patients with an LPDA <9° had 3 times the odds of ODS than those with an LPDA ≥9° (OR = 3.30, 95 % CI 1.22, 8.96, p = 0.0190).

Conclusions

This study demonstrates that increased levator plate descent and widened ARA as measured on 3D endovaginal ultrasound imaging are associated with ODS.

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Authors and Affiliations

  1. Department of Obstetrics and Gynecology, The University of Oklahoma Health Sciences Center, 920 Stanton L. Young Boulevard, P.O. Box 26901, WP2410, Oklahoma City, OK, 73190, USA

    D. O’Leary, G. Rostaminia, L. H. Quiroz & S. A. Shobeiri

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  1. D. O’Leary
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  2. G. Rostaminia
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  3. L. H. Quiroz
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  4. S. A. Shobeiri
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Correspondence to D. O’Leary.

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O’Leary, D., Rostaminia, G., Quiroz, L.H. et al. Sonographic predictors of obstructive defecatory dysfunction. Int Urogynecol J 26, 415–420 (2015). https://doi.org/10.1007/s00192-014-2515-6

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  • DOI: https://doi.org/10.1007/s00192-014-2515-6

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