What is the role of uroflow/electromyography (EMG) study in the workup of overactive bladder (OAB) in children?

Updated: Apr 01, 2019
  • Author: Pamela I Ellsworth, MD; Chief Editor: Edward David Kim, MD, FACS  more...
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Answer

A uroflow/electromyography (EMG) study involves the placement of perineal electrodes (often patch electrodes) and measurement of EMG activity before, during, and after voiding. Normally, sphincteric activity occurs during bladder filling but silences during voiding. Failure of relaxation or increased sphincteric activity during voiding may suggest a neurologic abnormality or dysfunctional voiding.


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