[Functional changes during the voiding phase in males with non-neurogenic detrusor underactivity undergoing bladder...

Area of Science:

• Urology
• Nephrology
• Geriatrics

Background:

• Detrusor underactivity (DU) is a common condition in older men, often leading to urinary retention.
• Urodynamic assessment is crucial for diagnosing DU and evaluating bladder function.
• The impact of bladder catheterization on urodynamic parameters in men with DU is not fully understood.

Purpose of the Study:

• To investigate changes in urodynamic parameters during the voiding phase in males with DU after bladder catheterization.
• To assess the effect of catheterization on bladder contractility and identify potential lower urinary tract obstructions.

Main Methods:

• A follow-up study was conducted on 17 male patients diagnosed with DU (Bladder Contractility Index [BCI] < 100) and urinary retention.
• Patients underwent bladder catheterization (permanent or intermittent) and a second urodynamic study after a mean of 13 months.
• Statistical analysis included Fisher's exact test and Student's t test (p < 0.05).

Main Results:

• A significant increase was observed in maximal detrusor pressure, pressure at maximum flow rate, and BCI score post-catheterization.
• The Bladder Outlet Obstruction Index (BOOI) score also significantly increased.
• More patients were able to void during the pressure-flow study after catheterization.

Conclusions:

• Bladder catheterization in men with DU significantly enhances bladder contractility.
• Catheterization can reveal lower urinary tract obstructions that were masked by reduced detrusor pressure.
• These findings have potential diagnostic, prognostic, and therapeutic implications for managing DU.