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Differences in urodynamic voiding variables recorded by conventional cystometry and ambulatory monitoring in symptomatic women

Lookup NU author(s): Dr Clive Griffiths, Rob Pickard, Professor Christopher HardingORCiD


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Objectives: To determine whether there are differences in pressure and flow measurements between conventional cystometry (CONV) and ambulatory urodynamic monitoring (AMB) in women with overactive bladder syndrome and urinary incontinence.Materials and Methods: Retrospective study which included female subjects who underwent both CONV (with saline filling medium) and AMB, separated by less than 24 months, not using medication active on the lower urinary tract and without history of prior pelvic surgery. Both tests were carried out in compliance with the International Continence Society standards. The paired Student's t test was used to compare continuous variables. Bland-Altman statistics were used to assess the agreement of each variable between both studies.Results: Thirty women with a median (range) age of 50 (14 - 73) years met the inclusion criteria. AMB was carried out at a mean (SD) of 11 (6) months after CONV. Measurements of p(ves) and p(abd) at the end of filling, and Q(max) were significantly higher from AMB recordings. There were no differences in p(det) at the end of filling, p(detQmax) or p(detmax) during voiding, nor significant difference in V-void.Conclusions: We provide previously undocumented comparative voiding data between CONV and AMB for patients who most commonly require both investigations. Our findings show higher values of Q(max) but similar values of p(detQmax) measured by AMB which may partly reflect an overall lower catheter caliber, physiological filling but perhaps also more 'normal' voiding conditions.

Publication metadata

Author(s): Valdevenito JP, Leonard A, Griffiths CJ, Pickard R, Harding C

Publication type: Article

Publication status: Published

Journal: International Brazilian Journal of Urology

Year: 2014

Volume: 40

Issue: 5

Pages: 666-675

Print publication date: 01/10/2014

Acceptance date: 09/11/2013

ISSN (print): 1677-5538

ISSN (electronic): 1677-6119

Publisher: Brazilian Society of Urology


DOI: 10.1590/S1677-5538.IBJU.2014.05.12


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