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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.