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saddle block anesthesia

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noun
  1. a form of spinal anesthesia that produces loss of sensation in the buttocks, perineum, and inner thighs.
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Origin of saddle block anesthesia

First recorded in 1945–50; so called because the nerve block caused by the anesthesia affects areas that would be numbed by prolonged contact with a saddle
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

saddle block anesthesia in Medicine

saddle block anesthesia

n.
  1. A form of spinal anesthesia limited in area to the buttocks, perineum, and inner surfaces of the thighs.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.