Related Experiment Video
Updated: Aug 17, 2025
Real-Time Void Spot Assay
Published on: February 10, 2023
One-day voiding diary in the evaluation of Lower Urinary Tract Symptoms in children
Hanny Helena Masson Franck1, Ana Carolina S Guedes2, Yago Felyppe S Alvim2
1Departamento de Cirurgia da Faculdade de Medicina - Universidade Federal de Juiz de Fora (UFJF), Juiz de Fora, MG, Brasil.
Insights
A one-day voiding diary (VD) is sufficient for evaluating children with voiding symptoms like overactive bladder (OAB) and primary monosymptomatic enuresis (PMNE). This method accurately assesses key metrics and guides treatment effectively.
Area of Science:
- Pediatric Urology
- Clinical Diagnostics
Background:
- The voiding diary (VD) is crucial for diagnosing and monitoring pediatric voiding disorders.
- Recent guidelines suggest reducing VD recording duration from 3 to 2 days.
- The study investigates the efficacy of a shortened VD duration.
Purpose of the Study:
- To determine if a one-day voiding diary (1dVD) is sufficient for guiding treatment in children with voiding symptoms.
- To compare the diagnostic value of 1dVD, 2-day VD (2dVD), and 3-day VD (3dVD).
Main Methods:
- Ninety-eight children (59 with PMNE, 30 with OAB) completed a 3-day VD.
- Data from 1dVD, 2dVD, and 3dVD were analyzed for voiding frequency, maximal voided volume (MVV), average voided volume (AVV), and nocturnal volume (NV).
- Statistical analyses included Friedman, Student's t-test, Fisher's exact test, ANOVA, and Pearson correlation.
Main Results:
- Voiding frequency, AVV, and nocturnal volume showed no significant differences across 1dVD, 2dVD, and 3dVD.
- Maximal voided volume (MVV) was only slightly higher (32 mL) in 3dVD compared to 1dVD.
- 1dVD demonstrated 93.9% sensitivity and a positive likelihood ratio of 2.2 for guiding treatment.
Conclusions:
- A one-day voiding diary (1dVD) is sufficient for assessing children with overactive bladder (OAB) and primary monosymptomatic enuresis (PMNE).
- 1dVD shows high sensitivity and good correlation with 3dVD, supporting its use in clinical practice.
- Maximal voided volume in children with these conditions approximates 68% of their expected bladder capacity.
Introduction:
Voiding diary (VD) is an important tool in the evaluation of children with voiding symptoms. Voiding frequency, maximal voided volume (MVV), average voided volume (AVV) and nocturnal volume (NV) can be extracted and are valuable in diagnosing and monitoring these disorders. Recently, ICCS has reduced the period of data recording on VD from 3 to 2 days.We hypothesized that one day voiding diary would be enough for guiding treatment.
Materials And Methods:
Children with overactive bladder (OAB) and primary monosymptomatic enuresis (PMNE) were oriented to fulfill a 3-day VD. Data obtained from VD were evaluated for the first day (1dVD), the first two days (2dVD), and all 3 days (3dVD) and compared according to the MVV, AVV, frequency, NV and expected bladder capacity (EBC). The Friedman, Student's t test and the Fisher's exact was used. ANOVA was used for multiple comparisons. We also used Pearson correlation test.
Results:
Ninety-eight children were included, 59 had PMNE and 30 OAB. Frequency, AVV and VN were similar regardless how many days the voiding episodes were recorded. Only MVV was higher by a mean of only 32 mL on 3dVD compared to 1dVD. A 1dVD has a sensitivity of 93,9% and a positive likelihood ratio of 2.2. As for the correlation of MVV and EBC it was observed that in 83% of children, MVV was lower than EBC. MVV corresponds to 67% and 69% of EBC in children with PMNE and OAB, respectively.
Conclusion:
We believe that 1dVD is sufficient to assess these children. It has a high sensitivity and good correlation to 3dVD in evaluating these children. Bladder capacity in this population, evaluated by maximum voided volume, was close to 68% of that obtained by the EBC.
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