Disorder of Bladder Function 1 (Voiding Disorder)

Uroflowmetry combined with pelvic floor electromyography (EMG) in a 7.6-year-old girl with recurrent urinary tract infection. To the parents, the voiding disorder may clinically remain in the background; possible is a history of a somewhat weak urinary stream and of a less audible course of micturition (less rushing noise in comparison to the micturition of the siblings). X-axis: Time in seconds, Y-axis: Flowrate in milliliter per second; Y-axis in the EMG: Activity of the pelvic floor muscles in microvolt (mV): Qmax = Maximum flowrate in milliliter per second. The course of micturition is hindered by repeated pelvic floor activities (two episodes between 0 to 5 and 5 to 10 seconds each). Therefore, instead of a bell-shaped curve a flattened curve results, and the maximum flowrate is reached only after the first half of the flowtime or time of micturition. The girl has a diagnosis of dysfunctional voiding, detrusor-sphincter dyssynergy as a possible type of disorder of bladder function.