International urogynecology journal · 2026
Clinical-Urodynamic Phenotyping of Female Voiding Disorders: A Narrative Review.
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Kuroda Kenji, Ito Keiichi
Аннотация
INTRODUCTION AND HYPOTHESIS: Female voiding disorders comprise a heterogeneous group of conditions with overlapping lower urinary tract symptoms but distinct underlying pathophysiological mechanisms. Accurate differentiation among these disorders is challenging because symptom-based evaluation alone often fails to identify the underlying cause. We aimed to review the clinical and urodynamic characteristics of the major phenotypes of female voiding disorders and propose a practical clinical-urodynamic phenotyping framework for diagnosis and management.
METHODS: A narrative literature review was conducted using the PubMed database through July 2026. An initial search identified 710 publications, of which 29 representative publications were selected following title, abstract, and full-text screening. Landmark studies, international consensus reports, and recent investigations were qualitatively synthesized to summarize the clinical presentation and urodynamic characteristics of detrusor underactivity, bladder outlet obstruction, dysfunctional voiding, primary bladder neck obstruction, and Fowler syndrome.
RESULTS: The reviewed evidence supports a hierarchical approach in which initial clinical assessment and noninvasive testing are followed by pressure-flow studies when the mechanism remains uncertain. Detrusor underactivity is characterized by low-pressure, low-flow voiding, whereas bladder outlet obstruction is associated with increased outlet resistance and may be anatomical/mechanical or functional. Functional obstruction includes dysfunctional voiding, primary bladder neck obstruction, and Fowler syndrome. Videourodynamics and electromyography provide additional information when the site or mechanism of obstruction requires clarification. Recent female-specific nomograms and clinical prediction models may facilitate quantitative risk stratification, but do not yet replace urodynamic phenotyping.
CONCLUSIONS: Female voiding disorders should be approached through a stepwise clinical-urodynamic framework rather than symptom assessment alone. Initial noninvasive evaluation can identify women who may require further investigation, whereas pressure-flow studies and, when indicated, videourodynamics or electromyography can distinguish mechanisms that have different therapeutic implications.
METHODS: A narrative literature review was conducted using the PubMed database through July 2026. An initial search identified 710 publications, of which 29 representative publications were selected following title, abstract, and full-text screening. Landmark studies, international consensus reports, and recent investigations were qualitatively synthesized to summarize the clinical presentation and urodynamic characteristics of detrusor underactivity, bladder outlet obstruction, dysfunctional voiding, primary bladder neck obstruction, and Fowler syndrome.
RESULTS: The reviewed evidence supports a hierarchical approach in which initial clinical assessment and noninvasive testing are followed by pressure-flow studies when the mechanism remains uncertain. Detrusor underactivity is characterized by low-pressure, low-flow voiding, whereas bladder outlet obstruction is associated with increased outlet resistance and may be anatomical/mechanical or functional. Functional obstruction includes dysfunctional voiding, primary bladder neck obstruction, and Fowler syndrome. Videourodynamics and electromyography provide additional information when the site or mechanism of obstruction requires clarification. Recent female-specific nomograms and clinical prediction models may facilitate quantitative risk stratification, but do not yet replace urodynamic phenotyping.
CONCLUSIONS: Female voiding disorders should be approached through a stepwise clinical-urodynamic framework rather than symptom assessment alone. Initial noninvasive evaluation can identify women who may require further investigation, whereas pressure-flow studies and, when indicated, videourodynamics or electromyography can distinguish mechanisms that have different therapeutic implications.