Prospective multicentric validation of a novel uroflowmetry device (Pflow™) against conventional gravimetric uroflowmetry.
- 1Department of Urology, Muljibhai Patel Urological Hospital, Nadiad, Gujarat, India.
- 2Department of Urology, Institute of Urology, Dhule, Maharashtra, India.
- 3Medical Intern, Salmaniya Medical Complex Bahrain, Busaiteen, Bahrain.
Abstract
Background
Conventional gravimetric uroflowmetry, although reliable, is restricted to clinical settings and may be influenced by inhibition and logistical constraints. The present study device is a gravity-driven volumetric uroflowmetry device that uses a calibrated multichamber collection system to derive standard uroflowmetry parameters without requiring electronics or external power. This study was done to assess the agreement between a novel portable uroflowmetry device (Pflow™) and conventional gravimetric uroflowmetry.Materials and methods
This prospective two-center, comparative study was conducted over 12 months (July 2023-July 2024) across two tertiary urology centers and included 372 patients (292 males; mean age 50.3 ± 18.5 years). Measurements were recorded simultaneously using both the devices during a single voiding event. Parameters analyzed included voided volume, peak flow rate (Qmax), average flow rate (Qavg), and voiding time. Agreement was assessed using the Wilcoxon signed-rank test, Spearman correlation, intraclass correlation coefficient (ICC), and Bland-Altman analysis.Results
No statistically significant differences were observed between the two methods for voided volume (271 mL vs. 270 mL, P = 0.440), voiding time (40 s vs. 38 s, P = 0.204), Qmax (15 mL/s vs. 14.4 mL/s, P = 0.209), and Qavg (9 mL/s vs. 10 mL/s, P = 0.739) and strong correlations were observed (ρ = 0.799-0.963, P < 0.001). ICC demonstrated excellent agreement for voided volume (0.963) and good agreement for all measured flow parameters. Bland-Altman analysis showed minimal bias.Conclusion
Pflow™ demonstrates good agreement with conventional uroflowmetry and may serve as a simple adjunct for monitoring urinary flow in clinical settings.
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BibTeX
@article{ganpule2026prospective,
title = {{Prospective multicentric validation of a novel uroflowmetry device (Pflow™) against conventional gravimetric uroflowmetry.}},
author = {Arvind P Ganpule and Ashish Rawandale-Patil and Kavan Anil Takvani and Lokesh G Patni and Preeti Ashish Rawandale and Tanisha Pranish Kushare},
journal = {Indian journal of urology : IJU : journal of the Urological Society of India},
year = {2026},
month = sep,
doi = {10.4103/iju.iju_272_26},
url = {https://europepmc.org/article/MED/42910108},
note = {CC BY-NC-SA},
}
RIS
TY - JOUR
TI - Prospective multicentric validation of a novel uroflowmetry device (Pflow™) against conventional gravimetric uroflowmetry.
AU - Arvind P Ganpule
AU - Ashish Rawandale-Patil
AU - Kavan Anil Takvani
AU - Lokesh G Patni
AU - Preeti Ashish Rawandale
AU - Tanisha Pranish Kushare
PY - 2026
DA - 2026/09/29
JO - Indian journal of urology : IJU : journal of the Urological Society of India
DO - 10.4103/iju.iju_272_26
UR - https://europepmc.org/article/MED/42910108
AB - Background Conventional gravimetric uroflowmetry, although reliable, is restricted to clinical settings and may be influenced by inhibition and logistical constraints. The present study device is a gravity-driven volumetric uroflowmetry device that uses a calibrated multichamber collection system to derive standard uroflowmetry parameters without requiring electronics or external power. This study was done to assess the agreement between a novel portable uroflowmetry device (Pflow™) and conventional gravimetric uroflowmetry.Materials and methods This prospective two-center, comparative study was conducted over 12 months (July 2023-July 2024) across two tertiary urology centers and included 372 patients (292 males; mean age 50.3 ± 18.5 years). Measurements were recorded simultaneously using both the devices during a single voiding event. Parameters analyzed included voided volume, peak flow rate (Qmax), average flow rate (Qavg), and voiding time. Agreement was assessed using the Wilcoxon signed-rank test, Spearman correlation, intraclass correlation coefficient (ICC), and Bland-Altman analysis.Results No statistically significant differences were observed between the two methods for voided volume (271 mL vs. 270 mL, P = 0.440), voiding time (40 s vs. 38 s, P = 0.204), Qmax (15 mL/s vs. 14.4 mL/s, P = 0.209), and Qavg (9 mL/s vs. 10 mL/s, P = 0.739) and strong correlations were observed (ρ = 0.799-0.963, P < 0.001). ICC demonstrated excellent agreement for voided volume (0.963) and good agreement for all measured flow parameters. Bland-Altman analysis showed minimal bias.Conclusion Pflow™ demonstrates good agreement with conventional uroflowmetry and may serve as a simple adjunct for monitoring urinary flow in clinical settings.
SN - 0970-1591
SN - 1998-3824
ER -