lumbar puncture
Diagnostic procedure involving insertion of a needle into the subarachnoid space to obtain cerebrospinal fluid for analysis.
Full Definition
Lumbar puncture, also known as spinal tap, is a diagnostic procedure commonly performed in pediatric neurology to obtain cerebrospinal fluid (CSF) for analysis. The procedure involves inserting a needle between lumbar vertebrae into the subarachnoid space. In pediatric populations, lumbar puncture may be performed to diagnose meningitis, encephalitis, subarachnoid hemorrhage, or other neurological conditions. Documentation should include indication, technique, complications, and CSF analysis results including opening pressure, cell count, protein, and glucose levels.
Usage
Usage note: LP is acceptable abbreviation after first use; spinal tap is less formal but widely understood.
In Context
- "Lumbar puncture was performed to rule out infectious etiology for the patient's altered mental status." — Procedure note
- "CSF obtained via lumbar puncture showed elevated protein and pleocytosis." — Laboratory results documentation