Stimwave for Pudendal Neuralgia.

Authors

Ly Hoang Roberts, Beaumont Health Fellow
Annah Vollstedt, Beaumont Health Fellow
Joshua Volin, Oakland University William Beaumont School of Medicine Medical Student
Teresa McCartney, Beaumont Health
Kenneth Peters, Beaumont Health

Document Type

Conference Proceeding

Publication Date

9-2021

Publication Title

Journal of Urology

Abstract

INTRODUCTION

AND OBJECTIVE: In patients with pudendal neuralgia refractory to traditional therapies, prior studies have shown efficacy in chronic stimulation with Interstim® (Medtronic, Inc., Minneapolis, MN). This study reports on a wireless system to power an implanted lead at the pudendal nerve, StimWave®, to treat pudendal neuralgia.

METHODS:

Retrospective chart review identified patients with a lead placed at the pudendal nerve for neuralgia and powered wirelessly. Clinical outcomes were assessed at post-operative visits and phone calls. Administered non-validated follow-up questionnaire evaluated the GRA, percentage of pain improvement, satisfaction with device, and initial and current settings of the device (hours/day of stimulation).

RESULTS:

Thirteen patients had the StimWave® lead placed at the pudendal nerve, 12 (92%) female and 1 (7.6%) male. Mean age was 50 years (range: 20-58). Failed prior therapies include medical therapy (100%), pelvic floor physical therapy (PFPT) (92%), pudendal nerve blocks (85%), pelvic floor muscle trigger point injections (69%), neuromodulation (30.7%), or surgeries for urogenital pain (23.1%). After the trial period, 10/13 (76.9%) had >50% improvement in pain with 6/13 (46.1%) reporting 100% pain improvement. Nine underwent permanent lead placement. At last post-operative visit (range 6-83 d), 4/9 patients reported >50% pain improvement. Seven patients reached for phone calls (8-734 d) reported symptoms to be "markedly improved" (n=2; 28.6%), "moderately improved" (n =4; 57.1%,), or "slightly improved" (n=1; 14.3%). Over half (5/7) reported complications including lead migration (n=2), broken wire (n=1) or non-functioning antenna (n=2).

CONCLUSIONS:

Complex patients with refractory pudendal neuralgia may benefit from pudendal nerve stimulation via StimWave.

Volume

206

Issue

suppl 3

First Page

e600

Recommended Citation

Hoang Roberts L, Vollstedt A, Volin J, McCartney T, Peters K. Stimwave for pudendal neuralgia. J Urol. 2021 Sep;206(suppl 3):e600.

Comments

Annual Meeting of the American Urological Association, Virtual, September 10-13, 2021.

DOI

10.1097/JU.0000000000002040.12