What is the role of postvoid residual volume 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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Postvoid residual volume determination is useful in ruling out dysfunctional voiding as a source of symptoms. In children, except in small infants, the bladder completely empties during each micturition.

An increased postvoid residual volume may be secondary to dysfunctional voiding. If the postvoid residual volume is initially increased, the study should be repeated because the results may not be accurate in an anxious child.

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