Epidural local anes: GI effect

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PMPMD

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Epidural local anes: GI effect
  • GI effects of neuraxial anesthesia are largely result of sympathectomy.
  • Abdominal organs derive sympathetic innervation from T6-L2.
  • Blockade of these fibers results in unopposed parasympathetic activity [CN X].
  • Secretions increase, sphincters relax, and the bowel becomes constricted.
  • Nausea is common complication of neuraxial anesthesia.
[Barash 6E p947]

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