Urodynamic evaluation: periurethral striated EMG versus perianal striated EMG.

Fifty consecutive spinal injury patients who underwent simultaneous EMG of the peri-urethral and perianal striated muscles along with cystometrogram on a multiple channel recorder are analysed. Bladder filling, voiding and also influence of spasticity on the EMG activity of both perianal and periurethral striated muscles were compared. Periurethral striated EMG along with CMG has a better diagnostic value (95 per cent) as compared to perianal EMG-CMG which was diagnostic in 72 per cent patients.