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Fatal lumbar puncture: fact versus fiction--an approach to a clinical dilemma

William J Oliver1, Thomas C Shope, Lawrence R Kuhns

  • 1Department of Pediatrics, University of Michigan, Ann Arbor, Michigan, USA. wjoandmbo@aol.com

Pediatrics
|September 2, 2003
PubMed

Insights

Cerebral herniation during lumbar puncture for bacterial meningitis is rare (5%). Clinical assessment, not always cranial CT, guides safe diagnosis and management, avoiding delays when herniation is imminent.

Area of Science:

  • Neurology
  • Infectious Diseases
  • Diagnostic Procedures

Background:

  • Reports highlight the alleged risk of cerebral herniation complicating lumbar puncture for acute bacterial meningitis.
  • Increased intracranial pressure is common in purulent meningitis, but herniation is a rare complication.

Purpose of the Study:

  • To provide a rational and reassuring approach to managing lumbar puncture in suspected bacterial meningitis.
  • To clarify the role of clinical assessment versus cranial computed tomography (CT) in diagnosing meningitis and preventing complications.

Main Methods:

  • Review of clinical data and literature regarding bacterial meningitis, lumbar puncture, and cerebral herniation.
  • Analysis of the utility and limitations of cranial computed tomography (CT) in the context of meningitis diagnosis.

Main Results:

  • Cerebral herniation is a rare complication of lumbar puncture in bacterial meningitis, occurring in approximately 5% of cases.
  • Cranial CT scans are frequently normal in purulent meningitis, even in cases with subsequent herniation, and carry potential long-term radiation risks.
  • Accurate clinical history and recognition of early systemic and neurologic findings are crucial for safe lumbar puncture.

Conclusions:

  • A thorough clinical evaluation can identify patients suitable for lumbar puncture, minimizing herniation risk.
  • Delaying lumbar puncture is indicated for patients exhibiting neurologic signs of impending cerebral herniation, necessitating alternative management strategies.

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