Does the presenting bladder volume at urodynamics have any diagnostic relevance?

Area of Science:

• Urology
• Gynecology
• Urogynecology

Background:

• Urodynamic assessment is crucial for diagnosing lower urinary tract dysfunction.
• Presenting bladder volume (PBV) is a key parameter in urodynamics.
• Accurate PBV measurement involves summing voided volume and postvoid residual.

Purpose of the Study:

• To evaluate the diagnostic significance of presenting bladder volume (PBV) in women undergoing urodynamics.
• To explore the relationship between PBV and clinical/urodynamic variables.

Main Methods:

• Retrospective analysis of 1,140 women undergoing initial urogynecological assessment.
• Multivariate analysis to identify associations between PBV and clinical/urodynamic factors.
• PBV calculated by adding voided volume and postvoid residual.

Main Results:

• Median PBV was 174 mL.
• Lower PBV (0-174 mL) associated with older age, lower parity, nocturia, sensory urgency, and detrusor overactivity.
• Lower PBV also linked to less posterior and apical vaginal prolapse.
• Higher PBV (>174 mL) associated with fewer bladder storage diagnoses.
• Low median PBV may limit stress leakage assessment and uroflowmetry interpretation.

Conclusions:

• PBV is a relevant diagnostic indicator in female urodynamics.
• PBV stratification aids in understanding underlying conditions like urgency and overactivity.
• Clinical implications of PBV require consideration for accurate diagnosis and management.