Relationship between maximum voided volume obtained by bladder diary compared to contemporaneous uroflowmetry in men and women.

Journal Article (Journal Article)

Introduction

The 24-hour bladder diary is considered to be the gold standard for evaluating maximum voided volume (MVV). However, we observed that patients often have a greater MVV during office uroflowmetry than that seen in the bladder diary. The purpose of this study is to compare these two non-invasive methods by which MVV can be determined - at the time of uroflowmetry (Q-MVV), or by 24hour bladder diary (BD-MVV).

Materials and methods

This was an Institutional Review Board approved retrospective study of patients evaluated for LUTS who completed a 24hour bladder diary and contemporaneous uroflowmetry. For Q-MVV, the patient was instructed to wait to void until their bladder felt full. Sample means were compared, and Pearson's correlations were calculated between the Q-MVV and BD-MVV data across the total sample, women, and men.

Results

Seven hundred seventy one patients with LUTS completed bladder diaries. Of these, 400 patients, 205 women and 195 men, had contemporaneous Q-MVV. Mean BD-MVV was greater than mean Q-MVV. However, Q-MVV was larger in a sizable minority of patients. There was a weak correlation between BD-MVV and Q-MVV. Furthermore, there was a difference ≥50% between Q-MVV and BD-MVV in 165 patients (41%).

Conclusions

The data suggest that there is a difference between the two measurement tools, and that the BD-MVV was greater than Q-MVV. For a more reliable assessment of MVV, this study suggests that both Q-MVV and BD-MVV should be assessed and that the larger of the two values is a more reliable assessment of MVV.

Full Text

Duke Authors

Cited Authors

  • Rychik, K; Policastro, L; Weiss, J; Blaivas, J

Published Date

  • November 2021

Published In

Volume / Issue

  • 47 / 6

Start / End Page

  • 1189 - 1194

PubMed ID

  • 34156195

Pubmed Central ID

  • PMC8486436

Electronic International Standard Serial Number (EISSN)

  • 1677-6119

International Standard Serial Number (ISSN)

  • 1677-5538

Digital Object Identifier (DOI)

  • 10.1590/s1677-5538.ibju.2021.0211

Language

  • eng