lumbar puncture

English

Noun

lumbar puncture (plural lumbar punctures)

  1. (medicine) A diagnostic and at times therapeutic procedure performed to collect a sample of cerebrospinal fluid for biochemical, microbiological, and cytological analysis, or rarely to relieve increased intracranial pressure.
    Synonyms: LP (initialism), spinal tap (informal); (uncommon) rachicentesis, rhachicentesis

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