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Erschienen in: International Urogynecology Journal 5/2017

20.12.2016 | Original Article

Detrusor pressures in urodynamic studies during voiding in women

verfasst von: Satoru Kira, Takahiko Mitsui, Hideki Kobayashi, Yaburu Haneda, Norifumi Sawada, Masayuki Takeda

Erschienen in: International Urogynecology Journal | Ausgabe 5/2017

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Abstract

Introduction and hypothesis

To investigate detrusor pressure during voiding in women using urodynamic studies (UDS).

Methods

The study group comprised 57 women with non-neurogenic lower urinary tract symptoms. All patients underwent UDS between January 2010 and December 2014. UDS included filling cystometry, pressure flow study (PFS), uroflowmetry for the maximum flow rate (Qmax) and mean flow rate, and postvoid residuals. Existence of voluntary detrusor contraction was defined as a continuous and smooth increase in detrusor pressure (Pdet) after the instruction to micturate in the PFS. The bladder contractility index (BCI) was calculated as Pdet at Qmax + 5 × Qmax. Statistical analyses were performed using the Mann–Whitney U test and p < 0.05 was considered statistically significant.

Results

The PFS showed that 23 patients had detrusor contraction (Pdet+ group) and 34 patients had no detrusor contraction (Pdet− group) during voiding. There were no significant differences in urodynamic parameters between the Pdet+ and Pdet− groups except in Pdet at Qmax and BCI. In the Pdet− group, 21 patients showed an increase in abdominal pressure during voiding (Pabd+ group), while the other 13 patients did not (Pabd− group). There were no differences in any of the urodynamic parameters between the Pabd+ and Pabd− groups.

Conclusions

Based on UDS, an increase in detrusor or abdominal pressure may not be necessary in micturition in women. The present study suggests that relaxation of pelvic floor muscles including normal urethral function are important for micturition in women.
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Metadaten
Titel
Detrusor pressures in urodynamic studies during voiding in women
verfasst von
Satoru Kira
Takahiko Mitsui
Hideki Kobayashi
Yaburu Haneda
Norifumi Sawada
Masayuki Takeda
Publikationsdatum
20.12.2016
Verlag
Springer London
Erschienen in
International Urogynecology Journal / Ausgabe 5/2017
Print ISSN: 0937-3462
Elektronische ISSN: 1433-3023
DOI
https://doi.org/10.1007/s00192-016-3203-5

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