Lumbar Puncture Essentials

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Questions and Answers

What is the primary purpose of examining the CSF in a lumbar puncture?

  • To remove CSF to decrease pressure in the space around the spinal cord
  • To measure the pressure of the CSF
  • To check for cancer of the brain and spinal cord
  • To examine cell counts, protein, and glucose levels (correct)

What condition would be a contraindication for performing a lumbar puncture?

  • Infected skin over the puncture site
  • Injecting chemotherapy drugs into the CSF
  • Increased intracranial pressure (ICP) (correct)
  • Bleeding around the brain or spinal cord

What is NOT a potential use of a lumbar puncture?

  • Putting an anesthetic into the CSF to freeze the spinal cord
  • Injecting chemotherapy drugs into the CSF
  • Measuring the pressure of CSF in the space around the spinal cord
  • Treating cancer of the brain and spinal cord (correct)

What is a potential risk associated with performing a lumbar puncture?

<p>Putting a contrast medium into the CSF (A)</p> Signup and view all the answers

Which test is NOT typically conducted using CSF obtained from a lumbar puncture?

<p>Testing for cancer of the brain and spinal cord (B)</p> Signup and view all the answers

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Study Notes

Lumbar Puncture

  • Lumbar puncture (LP), also known as spinal tap, is a medical procedure where a needle is inserted into the spinal canal to collect cerebrospinal fluid (CSF) for diagnostic testing.

Reasons for Lumbar Puncture

  • The primary reason for LP is to diagnose diseases of the central nervous system, including the brain and spine.

Diseases Diagnosed Using Lumbar Puncture

  • Meningitis
  • Encephalitis
  • Certain cancers involving the brain and spinal cord
  • Bleeding in the subarachnoid space
  • Reye syndrome
  • Myelitis
  • Neurosyphilis

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