caudal block

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caudal block

A veterinarian performs a caudal block on a dog before surgery.

Definition

Noun: A medical procedure involving the injection of a local anesthetic into the caudal canal (the sacral portion of the spinal canal near the tailbone) to block nerve signals, providing pain relief (analgesia) or complete numbness (anesthesia) for the lower body, particularly for surgeries or childbirth involving the pelvic region and perineum.

Usage
  • This term is used exclusively in medical contexts, specifically in anesthesiology, obstetrics, and surgery.
  • It describes both the anesthetic technique and the resulting state of regional anesthesia.
  • It is often discussed in contrast to or as a type of epidural anesthesia.
Examples
  • The anesthesiologist administered a caudal block to provide pain relief during the patient's hemorrhoid surgery.
  • For the delivery, the mother opted for a caudal block to numb the lower part of her body.
  • In pediatric surgery, a caudal block is sometimes used for postoperative pain management.
Advanced Usage
  • Historical Context: The text notes that caudal block is "now largely replaced by epidural anesthesia." This indicates that while the procedure is still valid and understood, modern medical practice often favors epidural techniques, which are considered to have certain advantages (e.g., easier placement, more predictable spread).
  • Technical Specification: A caudal block is specifically defined by the injection site—the caudal canal, accessed via the sacral hiatus. This distinguishes it from other regional blocks like a spinal (subarachnoid) block or a lumbar epidural.
Variants and Related Words
  • Caudal anesthesia (n): A fully synonymous term.
  • Caudal epidural (n): A more precise term, as the injection is technically into the epidural space via the caudal route.
  • Epidural anesthesia/analgesia (n): The broader category of nerve block to which caudal block belongs, typically administered higher in the lumbar spine.
  • Regional anesthesia (n): The general class of anesthesia that numbs a specific part of the body, which includes caudal, epidural, and spinal blocks.
Synonyms
  • Caudal anesthesia
  • Sacral block (less common)
Related Phrases
  • To administer a caudal block: To perform the injection procedure.
  • To have a caudal block: To receive this type of anesthesia.
  • Caudal block catheter: A thin tube sometimes left in place to provide continuous analgesia.
caudal block

A veterinarian performs a caudal block on a dog before surgery.

Noun
  1. regional anesthesia resulting from injection of an anesthetic into the caudal end of the spinal canal; now largely replaced by epidural anesthesia

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