Detrusor overactivity does not predict outcome of sacral neuromodulation test stimulation

Area of Science:

• Urology
• Neurology

Background:

• Urge incontinence is a common condition affecting quality of life.
• Sacral neuromodulation is a treatment option for refractory urge incontinence.
• Predicting response to sacral neuromodulation is crucial for patient selection.

Purpose of the Study:

• To evaluate if urodynamic findings, specifically detrusor overactivity (DO), predict response to sacral neuromodulation test stimulation in patients with urge incontinence.

Main Methods:

• Retrospective review of 104 patients with refractory urge incontinence undergoing sacral neuromodulation test stimulation.
• Analysis of pre- and post-stimulation incontinence parameters and pelvic floor muscle (PFM) strength.
• Urodynamic review to determine the presence or absence of detrusor overactivity (DO).

Main Results:

• 64% of patients responded to test stimulation, defined as >=50% improvement in incontinence episodes or pad weight.
• No statistically significant relationship was found between the presence of DO and test stimulation success.
• Patients without demonstrable DO on urodynamics showed a potential for positive response to sacral neuromodulation.

Conclusions:

• Detrusor overactivity on urodynamics does not reliably predict response to sacral neuromodulation test stimulation for urge incontinence.
• Sacral neuromodulation may be effective even in patients without urodynamically confirmed detrusor overactivity.