Urodynamic outcome of parasacral transcutaneous electrical neural stimulation for overactive bladder in children.

OBJECTIVE: To evaluate the urodynamic changes immediately after the first session (acute effect) and after the last session of parasacral TENS in children with idiopathic OAB. MATERIALS AND METHODS: We performed urodynamic evaluation immediately before and after the first session of parasacral TENS and immediately after the last session (7 weeks later). Only children with idiopathic isolated OAB were included. Patients with dysfunctional voiding were not included. RESULTS: 18 children (4 boys and 14 girls, mean age of 8.7) were included in the first analysis (urodynamic study before and immediately after the first session) and 12 agreed to undergo the third urodynamic study. Urodynamic before and immediately after the first session: There was no change in the urodynamic parameters, namely low MCC, low bladder compliance, presence of IDC, the average number of IDC, or in the maximum detrusor pressure after the first exam. Urodynamic after the last session: The bladder capacity improved in most patients with low capacity (58% vs. 8%). Detrusor overactivity was observed in 11 (92%) before treatment and 8 (76%) after. There was not a significant reduction in the average number of inhibited contractions after TENS (p=0.560) or in the detrusor pressure during the inhibited contraction (p=0.205). CONCLUSION: There was no change in the urodynamic parameters immediately after the first session of stimulation. After the last session, the only urodynamic finding that showed improvement was bladder capacity.

Urodynamic outcome of parasacral transcutaneous electrical neural stimulation for overactive bladder in children

ABSTRACTObjective:To evaluate the urodynamic changes immediately after the first session (acute effect) and after the last session of parasacral TENS in children with idiopathic OAB.Materials and methods:We performed urodynamic evaluation immediately before and after the first session of parasacral TENS and immediately after the last session (7 weeks later). Only children with idiopathic isolated OAB were included. Patients with dysfunctional voiding were not included.Results:18 children (4 boys and 14 girls, mean age of 8.7) were included in the first analysis (urodynamic study before and immediately after the first session) and 12 agreed to undergo the third urodynamic study. Urodynamic before and immediately after the first session: There was no change in the urodynamic parameters, namely low MCC, low bladder compliance, presence of IDC, the average number of IDC, or in the maximum detrusor pressure after the first exam. Urodynamic after the last session: The bladder capacity improved in most patients with low capacity (58% vs. 8%). Detrusor overactivity was observed in 11 (92%) before treatment and 8 (76%) after. There was not a significant reduction in the average number of inhibited contractions after TENS (p=0.560) or in the detrusor pressure during the inhibited contraction (p=0.205).Conclusion:There was no change in the urodynamic parameters immediately after the first session of stimulation. After the last session, the only urodynamic finding that showed improvement was bladder capacity.

Effects of dual pulse gastric electrical stimulation on gastric tone and compliance in dogs.

BACKGROUND: Gastric electrical stimulation (GES) with short pulses improves nausea and vomiting in patients with gastroparesis, whereas GES with long pulses improves gastric motility. AIMS: To assess the effects of a novel method of GES using dual pulse (both short and long pulses) on gastric tone, compliance and sympathovagal activity in dogs. MATERIALS AND METHODS: The study was performed in 7 dogs implanted with a gastric cannula and a pair of gastric serosal electrodes for dual pulse GES. The study was composed of a number of sessions on different days with different stimulation parameters, including variations in the number of short pulses and stimulation amplitude. RESULTS: (1) Dual pulse GES of one short pulse and one long pulse with various amplitudes inhibited gastric tone (p<0.05) but did not alter sympathetic or vagal activity. (2) Dual pulse GES with five short pulses and one long pulse not only inhibited gastric tone, but also reduced sympathetic activity and increased vagal activity (p<0.05). (3) Dual pulse GES with five short pulses and one long pulse significantly increased gastric compliance. CONCLUSIONS: Dual pulse GES reduces gastric tone and increases gastric compliance. The variation in the number of short pulse affects the sympathetic and vagal activities, whereas, the increase in stimulation strength enhances its effects on gastric tone.

The effects of functional electrical stimulation leg cycle ergometry training on arterial compliance in individuals with spinal cord injury.

STUDY DESIGN: A prospective intervention of functional electrical stimulation leg cycle ergometry (FES-LCE) of four women with spinal cord injury (SCI). OBJECTIVE: To evaluate the effect of FES-LCE training on arterial compliance in individuals with chronic SCI of traumatic origin. SETTING: Tertiary rehabilitation center in Canada. METHODS: Large and small artery compliance were measured at the radial artery before and after a 3-month training program using FES-LCE. RESULTS: There was no significant change in large artery compliance after FES-LCE (16.0+/-4.2 to 16.8+/-6.1 ml mm Hg(-1) x 10, P=NS). There was a marked (63%) increase in small artery compliance after the FES training program (4.2+/-1.8 to 6.9+/-3.2 ml mm Hg(-1) x 100, P<0.05). CONCLUSION: It appears that FES-LCE is effective in improving small artery compliance in females with SCI.