Background: Overactive bladder is a chronic condition affecting lower urinary tract function that has a significant negative impact on QoL.
Objective: Evaluation of the BlueWind implantable tibial nerve system performance and safety in refractory OAB.
Design, Setting, And Participants Intervention: A 6-month multi-center prospective intervention study.
Outcome Measurements And Statistical Analysis: Objective assessment was done by voiding diary parameters including voids/day, volume voided/day, urgency assessment, leaking episodes/day, pads used/day, leak severity, and clinical success defined as a ≥50% reduction in the number of leaks/day or number of voids/day or number of episodes with degree of urgency >2 or a return to <8 voids/day on a 3 Day diary. Subjective assessment was based on OAB-q including HRQL and symptom severity score. Safety was evaluated by adverse event (AE) analysis.
Results And Limitations: Thirty-four of the 36 implanted subjects completed the study. One subject withdrew voluntarily and one developed inflammation necessitating removal of the system. In the remaining subjects, 71% experienced clinical success at 6 months. Leaks/day, leak severity, and pad changes/day decreased significantly over time with 27.6% of urge incontinence subjects that became "dry." Voids/day, degree of urgency, volume/void, pads changed improved significantly. All quality of life aspects (concern, coping, sleep, and social) improved as well as symptom severity scores measured by the OAB-q. Adverse events included: implant site pain (13.9%), suspected infection (22.2%), and procedural wound complications (8.3%).
Conclusions: The BlueWind implantable tibial nerve stimulator is a safe, minimally invasive system that affords OAB patients significant improvements.
Patient Summary: The performance and safety of the BlueWind RENOVA™ implantable tibial nerve neuromodulator for OAB was tested. Our preliminary results demonstrate that the system has a low risk safety profile and may be considered an effective treatment option for OAB management.
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| http://dx.doi.org/10.1002/nau.23401 | DOI Listing |
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