Effect of flavoxate on hyperactive detrusor muscle

Area of Science:

• Urology
• Pharmacology

Background:

• Hyperactive detrusor contractions contribute to urinary urgency, frequency, and nocturia.
• Flavoxate is a medication used to treat symptoms associated with detrusor overactivity.

Purpose of the Study:

• To evaluate the efficacy of Flavoxate in patients with hyperactive detrusor contractions.
• To assess both subjective patient-reported outcomes and objective urodynamic parameters.

Main Methods:

• A study involving 37 patients with hyperactive detrusor contractions.
• Inclusion of intravenous Flavoxate administration in 11 patients during urodynamic assessment.
• Measurement of symptom improvement (frequency, nocturia, enuresis) and urodynamic parameters (contraction amplitude, onset, bladder capacity).

Main Results:

• Subjective improvement reported by 61.3% of patients.
• Approximately 50% improvement in urinary complaints.
• Urodynamic data showed a nearly 50% reduction in mean detrusor pressure and an 80% delay in the onset of contractions relative to bladder volume.
• Average increase in bladder capacity was 19%.

Conclusions:

• Flavoxate demonstrates significant efficacy in reducing the pressure and delaying the onset of hyperactive detrusor contractions.
• The drug provides subjective and objective improvements in patients with detrusor overactivity.
• Efficacy was notably lower in patients with neurogenic bladder compared to those with motor urge incontinence.