Xiaoping Wan1,2,3,4, Yanan Liang1,2,3,4, Xing Li5,6,7,8, Limin Liao9,10,11,12. 1. Department of Urology, China Rehabilitation Research Center, Rehabilitation School of Capital Medical University, Beijing, 100068, China. 2. Department of Urology, Capital Medical University, Beijing, 100068, China. 3. Beijing Key Laboratory of Neural Injury and Rehabilitation, Beijing, 100068, China. 4. Center of Neural Injury and Repair, Beijing Institute for Brain Disorders, Beijing, 100068, China. 5. Department of Urology, China Rehabilitation Research Center, Rehabilitation School of Capital Medical University, Beijing, 100068, China. lxcpums@126.com. 6. Department of Urology, Capital Medical University, Beijing, 100068, China. lxcpums@126.com. 7. Beijing Key Laboratory of Neural Injury and Rehabilitation, Beijing, 100068, China. lxcpums@126.com. 8. Center of Neural Injury and Repair, Beijing Institute for Brain Disorders, Beijing, 100068, China. lxcpums@126.com. 9. Department of Urology, China Rehabilitation Research Center, Rehabilitation School of Capital Medical University, Beijing, 100068, China. lmliao@263.net. 10. Department of Urology, Capital Medical University, Beijing, 100068, China. lmliao@263.net. 11. Beijing Key Laboratory of Neural Injury and Rehabilitation, Beijing, 100068, China. lmliao@263.net. 12. Center of Neural Injury and Repair, Beijing Institute for Brain Disorders, Beijing, 100068, China. lmliao@263.net.
Abstract
OBJECTIVE: The present study investigated the inhibitory effects of a novel minimally invasive implanted tibial nerve stimulation device on non-nociceptive bladder reflexes in cats. MATERIALS AND METHODS: A wireless minimally invasive implanted nerve stimulator was implanted adjacent to the left tibial nerve in seven cats. Multiple cystometrograms (CMGs) were obtained to determine the inhibitory effects of tibial nerve stimulation (TNS) at different frequencies and intensities on the micturition reflex by infusing normal saline (NS). RESULTS: TNS at 6 Hz did not significantly change the bladder capacity (BC) compared to the control level at the intensity threshold (T), while TNS significantly (P < 0.05) increased the BC to 158.89 ± 20.57% of the control level at 2 T. When stimulated at 15 Hz, TNS did not significantly (P > 0.05) change the BCs at 1 T and 2 T. CONCLUSIONS: The minimally invasive implanted TNS device was shown to be effective in inhibiting the micturition reflex under physiologic conditions. Further studies are warranted to determine the inhibitory effects of TNS on nociceptive bladder reflexes.
OBJECTIVE: The present study investigated the inhibitory effects of a novel minimally invasive implanted tibial nerve stimulation device on non-nociceptive bladder reflexes in cats. MATERIALS AND METHODS: A wireless minimally invasive implanted nerve stimulator was implanted adjacent to the left tibial nerve in seven cats. Multiple cystometrograms (CMGs) were obtained to determine the inhibitory effects of tibial nerve stimulation (TNS) at different frequencies and intensities on the micturition reflex by infusing normal saline (NS). RESULTS:TNS at 6 Hz did not significantly change the bladder capacity (BC) compared to the control level at the intensity threshold (T), while TNS significantly (P < 0.05) increased the BC to 158.89 ± 20.57% of the control level at 2 T. When stimulated at 15 Hz, TNS did not significantly (P > 0.05) change the BCs at 1 T and 2 T. CONCLUSIONS: The minimally invasive implanted TNS device was shown to be effective in inhibiting the micturition reflex under physiologic conditions. Further studies are warranted to determine the inhibitory effects of TNS on nociceptive bladder reflexes.
Authors: W F Stewart; J B Van Rooyen; G W Cundiff; P Abrams; A R Herzog; R Corey; T L Hunt; A J Wein Journal: World J Urol Date: 2002-11-15 Impact factor: 4.226