Detrusor instability responses to transvaginal versus posterior tibial nerve stimulation

Background: This study aimed at comparing the effects of transvaginal electrical stimulation versus posterior tibial nerve electrical stimulation on urodynamic measurements in detrusor instability.Methods: Forty patients were randomly assigned to transvaginal electrical stimulation (Group A) and posterior tibial nerve electrical stimulation (Group B). All patients were assessed before and after the treatment course (36 sessions) according to the urodynamic parameters. These parameters included first sensation to void and bladder capacity.Results: Regarding first sensation to void, Group A showed improvement with 45.9% after the end of the treatment compared to the baseline while, Group B showed 2.72 % improvement. Regarding bladder capacity both groups showed highly significant (p>0.0001) increase in the bladder capacity. Group A showed significant improvement in the first desire to void and bladder capacity (p>0.0001& p>0.05) respectively compared to Group B.Conclusions: Both transvaginal electrical stimulation and posterior tibial nerve electrical stimulation restore normal detrusor capacity in cases of idiopathic detrusor instability. However, the transvaginal electrical stimulation seems to be more effective.