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block
(redirected from subarachnoid block)

    Also found in: Dictionary/thesaurus, Medical, Legal, Financial, Wikipedia, Hutchinson 0.06 sec.

(1) A group of disk or tape records that is stored and transferred as a single unit. On a CD, a block consists of 98 frames of 33 bytes for a total of 3,234 bytes, or 1/75th of a second. See block level.

(2) A group of bits or bytes that is transmitted or processed as a single unit.

(3) A group of text characters that has been marked for moving, copying, saving or other operation.

(4) A rectangular group of pixels that are processed as a unit.

(5) A group of program statements that are treated as a unit based on the results of a comparison.

block - 1. A unit of data or memory, often, but not exclusively, on a magnetic disk or magnetic tape.

Compare record, sector.
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Objectives: The goal of this randomized study was to compare the incidence of postdural puncture headache (PDPH) and postdural puncture backache (PDPB), and the success rate between two smallgauge spinal needle designs used in women undergoing subarachnoid block anesthesia.
Incidence of postdural puncture headache and backache, and success ... by Ross, Vernon / Southern Medical Journal
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