Comparison of self-reported voided volume with cystometric bladder capacity

Area of Science:

• Urology
• Geriatrics
• Gynecology

Background:

• Urinary incontinence is prevalent in women aged 55 and older.
• Accurate assessment of bladder capacity is crucial for effective treatment.
• Home-based measurements offer a patient-centric approach to data collection.

Purpose of the Study:

• To determine the validity of cystometric bladder capacity (CBC) compared to self-reported voided urine volumes.
• To assess the utility of home voiding diaries in clinical practice for measuring functional bladder volume.

Main Methods:

• Prospective study involving 200 ambulatory incontinent women (≥55 years old).
• Data collection included home diaries, medical history, physical examination, and urodynamic studies.
• Statistical analysis involved correlation and analysis of variance (ANOVA).

Main Results:

• A significant positive correlation was found between CBC and the largest daily voided volume (r=0.4938, p<0.01).
• ANOVA revealed statistical significance in CBC and voided volumes across different urodynamic diagnoses (p<0.01).

Conclusions:

• Cystometric bladder capacity is a valid measure of functional bladder volume.
• Home voiding diaries are a useful tool in clinical practice for assessing bladder function in older women with incontinence.