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

Abstract

ARTICLE INfO ______________________________________________________________ ______________________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.

The Importance of Verbal and Written Instructions for Patients Undergoing Pressure-Flow Urodynamic Studies

“…This procedure takes about 40-60 minutes. It is not normally painful but it can be unpleasant (Valdevenito et al, 2014 andYamanishi et al, 2011).…”