Relationship between voided volume and the urge to void among patients with lower urinary tract symptoms. (December 2014)

• Record Type: Journal Article
• Authors: Blaivas, Jerry G.; Tsui, Johnson F.; Amirian, Michael; Ranasinghe, Buddima; Weiss, Jeffrey P.; Haukka, Jari; Tikkinen, Kari A. O.
• Is Part Of: Scandinavian journal of urology. Volume 48:Number 6(2014)
• Page Start: 554
• Page End: 558
• Publication Date: 2014-12
• Subjects: Urology -- Periodicals; 616.6
• DOI: 10.3109/21681805.2014.932842
• Languages: English
• ISSNs: 2168-1805

Abstract

<abstract> <title>Abstract</title> <p> <italic>Objective.</italic>The aim of this study was to explore the relationship between voided volume (VV) and urge to void among patients with lower urinary tract symptoms. <italic>Material and methods.</italic> Consecutive adult patients (aged 23–90 years) were enrolled, and completed a 24 h bladder diary and the Urgency Perception Scale (UPS). Patients were categorized as urgency or non-urgency based on the Overactive Bladder Symptom Score. The relationship between UPS and VV (based on the bladder diary) was analyzed by Spearman's rho and proportional odds model. <italic>Results. </italic>In total, 1265 micturitions were evaluated in 117 individuals (41 men, 76 women; 56 individuals in the urgency and 61 in the non-urgency group). The mean (± SD) VV and UPS were 192 ± 127 ml and 2.4 ± 1.2 ml in the urgency group and 173 ± 124 ml and 1.7 ± 1.1 ml in the non-urgency group, respectively. Spearman's rho (between UPS and VV) was 0.21 [95% confidence interval (CI) 0.13–029, <italic>p</italic> < 0.001] for the urgency group, 0.32 (95% CI 0.25–0.39, <italic>p</italic> < 0.001) for the non-urgency group, and 0.28 (95% CI 0.23–0.33, <italic>p</italic> < 0.001) for the total cohort. Urgency patients had higher UPS [odds ratio (OR) 3.1, 95% CI 2.5–3.8]. Overall, each additional 50 ml VV increased the odds of having a higher UPS with OR 1.2 (95% CI 1.2–1.3). The relationship between VV and UPS score was similar in both groups (<italic>p</italic> = 0.548 for interaction). <italic>Conclusion.</italic> Although urgency patients void with a higher UPS score, among both urgency and non-urgency patients there is only a weak correlation between VV and the urge to void. This suggests that there are factors other than VV that cause the urge to void.</p> </abstract>