Selective co-stimulation of pudendal afferents enhances reflex bladder activation.

Published

Journal Article

The loss of normal bladder function is common in persons with spinal cord injury (SCI) and negatively impacts their quality of life. Electrical stimulation of pudendal nerve afferents is a promising approach to restore control of bladder function. Pudendal afferent stimulation can generate reflex contraction of the bladder, but the resulting bladder voiding efficiency remains low. The objective of this work was t o evaluate selective co-stimulation of two branches of the pudendal nerve--the cranial urethral sensory nerve (CSN) and the dorsal nerve of the penis (DNP)--as a means to enhance reflex bladder activation and bladder voiding efficiency. In preclinical studies in anesthetized adult cats, co-stimulation of CSN and DNP evoked larger bladder contractions than individual stimulation of either CSN or DNP. In a parallel clinical experiment involving a participant with chronic SCI, co-stimulation of the proximal and distal urethra also produced synergistic augmentation of reflex bladder activity, and thus improved voiding efficiency when compared to reflex distension-evoked voiding. Selective co-stimulation of pudendal afferents is efficacious and should be considered in the development of neural prosthetics for restoration of bladder function in persons with SCI.

Full Text

Duke Authors

Cited Authors

  • McGee, MJ; Yoo, PB; Grill, WM

Published Date

  • January 2011

Published In

Volume / Issue

  • 2011 /

Start / End Page

  • 1057 - 1060

PubMed ID

  • 22254495

Pubmed Central ID

  • 22254495

International Standard Serial Number (ISSN)

  • 1557-170X

Digital Object Identifier (DOI)

  • 10.1109/IEMBS.2011.6090246

Language

  • eng