Can recording only the day-time voided volumes predict bladder capacity?

Won Yeol Cho, Seong Cheol Kim, Sun Ouck Kim, Sungchan Park, Sang Don Lee, Jae Min Chung, Kyung Do Kim, Du Geon Moon, Young Sig Kim, Jun Mo Kim

    Research output: Contribution to journalArticlepeer-review

    9 Citations (Scopus)


    Purpose: This study aimed to demonstrate a method to easily assess bladder capacity using knowledge of day-time voided volumes, which can be obtained even from patients with nocturnal enuresis where the first morning void cannot accurately predict the bladder capacity due to bladder emptying overnight. Materials and Methods: We evaluated 177 healthy children from 7 Korean medical centres entered the study between January 2008 and January 2009. Voided volumes measured for more than 48 hours were recorded in the frequency volume chart (FVC). Results: Most voided volumes during day-time were showed between 30% and 80% of the maximal voided volume (MVV). The maximal voided volume during day-time (MVVDT) was significantly less than the MVV (179.5±71.1 mL vs. 227.0±79.2 mL, p<0.001). The correlation coefficients with the MVV were 0.801 for the estimated MVV using the MVVDT (MVVDT×1.25), which suggested a fairly strong relationship between the MVVDT×1.25 and the MVV. Conclusions: The MVV derived from the FVC excluding the FMV was less than if the FMV had been included. When an accurate first morning voided volume cannot be obtained, as in patients with nocturnal enuresis, calculating MVVDT×1.25 allows estimation of the bladder capacity in place of the MVV.

    Original languageEnglish
    Pages (from-to)194-199
    Number of pages6
    JournalInvestigative and clinical urology
    Issue number3
    Publication statusPublished - 2018 May

    Bibliographical note

    Publisher Copyright:
    © The Korean Urological Association.


    • Child
    • Diagnosis
    • Nocturnal enuresis
    • Urinary bladder

    ASJC Scopus subject areas

    • Urology


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