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Updated: Jul 1, 2026
05:25
Ultrasonography of the Adult Male Urinary Tract for Urinary Functional Testing
Published on: August 14, 2019
Dynamic Simulation of Male Bladder Outlet Obstruction: Flow Characteristics and Novel Quantitative Indicators
Guang Li1, Zhong Chen2, Youmin Hu1
1School of Mechanical Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, China.
Summary
This study developed a novel method using uroflowmetry to evaluate bladder outlet obstruction (BOO), offering a less invasive alternative to traditional urodynamics. The findings provide key parameters for identifying male BOO and guiding surgical interventions.
Area of Science:
- Urology
- Biomedical Engineering
- Fluid Dynamics
Background:
- Bladder outlet obstruction (BOO) diagnosis relies on invasive urodynamics with limitations.
- Current methods for BOO assessment carry risks of side effects and surgical complications.
Purpose of the Study:
- To introduce non-invasive evaluation strategies for BOO recognition using uroflowmetry.
- To develop and validate dimensionless parameters for distinguishing BOO from healthy states.
Main Methods:
- A catheter-free male lower urinary tract (LUT) model was created for hydrodynamics simulation.
- Pressure, velocity, and vortex distributions were analyzed under varying obstruction degrees and bladder pressures.
- Four dimensionless evaluation parameters were derived from uroflowmetry data of 300 subjects.
Main Results:
- Urethral pressure and velocity were significantly influenced by obstruction extent and location.
- Maximum pressure and velocity differences reached 28.8 cm H2O and 2.41 m/s, respectively.
- Four parameters effectively distinguished healthy individuals from those with BOO (p < 0.05).
Conclusions:
- Uroflowmetry-based dimensionless parameters offer a reliable method for identifying male BOO.
- Hydrodynamic simulation provides insights into pressure, velocity, and vortex dynamics in BOO.
- These findings can guide customized surgical treatments for BOO.
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