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High urinary flow in women with stress incontinence: corrected flow–age nomogram evaluation after a transobturator tape procedure

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Abstract

Introduction and hypothesis

We noninvasively compared urinary flow in both pre- and post-transobturator tape (TOT) procedures in stress urinary incontinence (SUI) patients using previously reported corrected flow–age nomograms in healthy women.

Methods

This retrospective cohort study included patients who underwent a successful TOT procedure to treat SUI. Non-instrumented uroflowmetry was performed before and 3 months after surgery. Corrected maximum flow rate (cQmax) and average flow rate (cQave) were calculated using Qmax/√voided volume (VV) and Qave/√VV respectively. The ratio of corrected flow to age-adjusted corrected flow in healthy women was calculated in each patient. Each parameter was compared against pre-TOT and 3-months post-TOT values.

Results

Sixty-two patients were eligible for study inclusion. All urinary flow parameters were significantly higher pre-TOT than at 3 months post-TOT. The number of patients with cQmax and cQave over mean flow–age nomogram, compared with healthy women, before the TOT procedure decreased 3 months post-TOT; however, in many patients, cQmax and cQave were higher than in the corrected flow–age nomogram post-TOT. No significant difference in the ratio of cQmax to age-adjusted cQmax between pre- and post-TOT in the normal urinary flow group was observed, but significantly decreased in the high urinary flow group 3 months after TOT.

Conclusions

Urinary flow rates were higher in SUI patients compared with age-matched controls and successful TOT procedures normalized urinary flows in patients with high urinary flow. A simple evaluation of urinary flow using a corrected flow–age nomogram may be clinically useful in SUI patients.

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Abbreviations

ALPP:

Abdominal leak point pressure

BMI:

Body mass index

cQave:

Corrected average flow rate

cQmax:

Corrected maximum flow rate

MUS:

Mid-urethral sling

POP:

Pelvic organ prolapse

PVR:

Post-void residual volume

Qave:

Average flow rate

Qmax:

Maximum flow rate

SUI:

Stress urinary incontinence

TOT:

Transobturator tape

TVT:

Tension-free vaginal tape

VV:

Voided volume

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Authors and Affiliations

  1. Department of Integrative Cancer Therapy and Urology, Graduate School of Medical Science, Kanazawa University, Takaramachi 13-1, Kanazawa, Ishikawa, 920-8640, Japan

    Yasuhide Kitagawa, Kazutaka Narimoto, Satoko Urata, Shohei Kawaguchi, Masato Kuribayashi & Mikio Namiki

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  1. Yasuhide Kitagawa
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  2. Kazutaka Narimoto
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  3. Satoko Urata
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  4. Shohei Kawaguchi
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  5. Masato Kuribayashi
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  6. Mikio Namiki
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Correspondence to Yasuhide Kitagawa.

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Kitagawa, Y., Narimoto, K., Urata, S. et al. High urinary flow in women with stress incontinence: corrected flow–age nomogram evaluation after a transobturator tape procedure. Int Urogynecol J 27, 1075–1080 (2016). https://doi.org/10.1007/s00192-016-2943-6

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  • DOI: https://doi.org/10.1007/s00192-016-2943-6

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