Detrusor-external sphincter dyssynergia: a detailed electromyographic study.
We reviewed 54 cases of detrusor-external sphincter dyssynergia following complete urodynamic evaluations. All patients had well defined neurologic lesions of the suprasacral spinal cord. On the basis of urodynamic findings 3 types of dyssynergia were encountered: type 1 (30 per cent) was characterized by a crescendo increase in electromyographic activity that reached a maximum at the peak of the detrusor contraction, type 2 (15 per cent) consisted of clonic sphincter contractions interspersed throughout the detrusor contraction and type 3 (55 per cent) was characterized by a sustained sphincter contraction that coincided with the detrusor contraction. There was no correlation between the clinical neurologic level and the type of dyssynergia.
D000200:Action Potentials; D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004576:Electromyography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009119:Muscle Contraction; D013118:Spinal Cord Diseases / Q000503:physiopathology; D014521:Urethra / Q000503:physiopathology*; D001750:Urinary Bladder, Neurogenic / Q000175:diagnosis / Q000503:physiopathology*