Detrusor pressure in ambulatory versus standard urodynamics

Area of Science:

• Urology
• Urodynamics
• Pelvic Floor Disorders

Background:

• Classical cystometry is often insufficient for diagnosing urinary incontinence.
• Objective confirmation is needed for non-neurogenic incontinence cases.
• Ambulatory urodynamic examination offers a potential solution.

Purpose of the Study:

• To evaluate the efficacy of ambulatory urodynamic examination.
• To diagnose urinary incontinence in patients with inconclusive classical cystometry.
• To assess bladder and urethral instability.

Main Methods:

• Performed ambulatory urodynamic examination on 28 non-neurogenic incontinent patients.
• Utilized ambulatory detrusor pressure monitoring.
• Compared ambulatory measurements with classical cystometry.

Main Results:

• Demonstrated real leakage in 12 of 13 stress-incontinent patients.
• Identified bladder instability in 8 of 15 mixed incontinence patients.
• Detected urethral instability in 2 mixed incontinence patients.
• Observed higher voiding detrusor pressures (approx. 10 cm H2O) and lower voided volumes during ambulatory measurements compared to classical cystometry.

Conclusions:

• Ambulatory urodynamic examination is valuable for diagnosing urinary incontinence when conventional methods fail.
• The technique can objectively demonstrate leakage and identify detrusor or urethral instability.
• Ambulatory detrusor pressure monitoring provides distinct data compared to classical cystometry, with specific advantages and limitations.