Neuromodulation for intractable OAB

Area of Science:

• Urology
• Neuromodulation
• Pelvic Floor Disorders

Background:

• Intractable overactive bladder (OAB) significantly impacts quality of life.
• Sacral neuromodulation (SNM) is a recognized second-line treatment option for OAB.
• Current understanding of SNM's long-term effects and mechanisms requires further investigation.

Purpose of the Study:

• To comprehensively review the current evidence on sacral neuromodulation (SNM) for intractable overactive bladder (OAB).
• To evaluate SNM's efficacy, technical aspects, adverse events, and cost-effectiveness.
• To identify areas for future research in SNM for OAB treatment.

Main Methods:

• Systematic literature review of PubMed English-language publications.
• Analysis of studies focusing on efficacy, technical issues, alternative techniques, mechanism of action, adverse events, and cost-effectiveness.
• Inclusion of randomized controlled trials and observational studies on SNM for OAB.

Main Results:

• SNM demonstrates significant short- and long-term efficacy in managing urgency incontinence and other OAB symptoms.
• Technical advancements have improved outcomes and reduced complications, but revision rates remain high.
• The precise mechanism of action is not fully understood, potentially involving spinal reflex and cortical activity modulation.

Conclusions:

• Current evidence supports SNM's efficacy for intractable OAB.
• Further research is essential to refine patient selection, identify prognostic factors, elucidate the mechanism of action, and minimize complications.
• Less invasive SNM techniques may provide viable alternatives.