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Lumbar puncture for suspected meningitis after intensive care unit admission is likely to change management

Faisal A Khasawneh1, Roger D Smalligan, Tammam N Mohamad

  • 1Department of Internal Medicine, School of Medicine, Texas Tech University Health Sciences Center, Amarillo, TX 79106, USA. faisal.khasawneh@ttuhsc.edu

Hospital Practice (1995)
|March 29, 2011
PubMed
Abstract

Insights

Lumbar punctures (LPs) in critically ill patients often change management, even if a specific diagnosis is rare. This procedure provides crucial information, frequently leading to antibiotic de-escalation.

Area of Science:

  • Critical Care Medicine
  • Neurology
  • Infectious Diseases

Background:

  • Critically ill patients often present with non-specific symptoms requiring diagnostic procedures.
  • Lumbar puncture (LP) is a key diagnostic tool for neurological infections.

Purpose of the Study:

  • To evaluate the diagnostic yield and impact on management of lumbar punctures (LPs) in critically ill medical patients.
  • To identify factors influencing changes in case management following LP.

Main Methods:

  • Retrospective review of 168 patients undergoing LP in a medical intensive care unit (MICU) over 4.5 years.
  • Analysis of patient symptoms, prior investigations (CT head), antibiotic use, and LP results.

Main Results:

  • LP confirmed meningitis in 30% of patients and provided a specific bacteriologic diagnosis in only 3%.
  • Management changed in 30% of patients, influenced by meningeal signs and pre-procedure antibiotic use.
  • Most changes involved de-escalation of antibiotic therapy.

Conclusions:

  • While specific bacteriologic diagnosis rates are low, LP is valuable in critically ill patients.
  • LP results frequently guide clinical decisions, particularly regarding antibiotic treatment adjustments.

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