SAB
Meaning of SAB: SAB numbs the lower body by injecting anesthetic directly into the fluid surrounding the spinal cord below its termination.
Definition of SAB
SAB is an abbreviation for subarachnoid block, more commonly known as spinal anesthesia or a spinal block. It is a technique in which an anesthetic medication is injected into the fluid-filled space surrounding the spinal cord, in the lower portion of the back.
The injection produces a temporary loss of sensation, and often movement, in the lower part of the body, an effect that begins quickly and lasts for a defined period depending on the specific medication used. It is classified as a type of regional anesthesia, meaning it numbs a specific region rather than producing unconsciousness.
SAB is used for certain surgical procedures involving the lower abdomen, pelvis, or legs, and a person receiving it typically remains awake throughout the procedure unless combined with additional sedation, distinguishing this technique from general anesthesia.
Also known as
Used in a sentence
The procedure was performed under SAB, allowing the patient to remain awake throughout.
Good to know
SAB produces numbness through a single injection into spinal fluid and is distinct from epidural anesthesia, which delivers medication continuously through a catheter placed just outside that fluid-filled space.