Which findings are characteristic of neurogenic bladder in patients with lumbar disc herniation?

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

Answer

Slow and progressive herniation of the lumbar disc may cause irritation of the sacral nerves and detrusor hyperreflexia. Conversely, acute compression of the sacral roots associated with deceleration trauma will prevent nerve conduction and result in detrusor areflexia.

A typical urodynamic finding in sacral nerve injury is detrusor areflexia with intact bladder sensation. Associated internal sphincter denervation may occur. If the peripheral sympathetic nerves are damaged, the internal sphincter will be open and nonfunctional. Peripheral sympathetic nerve damage often occurs in association with detrusor denervation. The striated sphincter, however, is preserved.


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