What is the neuroanatomy of involuntary detrusor contractions in infants?

Updated: Dec 06, 2018
  • Author: Bradley C Gill, MD, MS; Chief Editor: Edward David Kim, MD, FACS  more...
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Answer

Answer

In infants, the higher center of voiding control (the brain) is not mature enough to command the bladder, so control of urination comes from signals sent from the sacral cord. When urine fills the infant bladder, an excitatory signal is sent to the sacral cord. When this signal is received by the sacral cord, the spinal reflex center automatically triggers the detrusor to contract. The result is involuntary detrusor contractions with coordinated voiding.


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