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Admission diagnosis and timing of lumbar puncture in bacterial meningitis

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Introduction

To evaluate the possible influence of admission diagnosis and clinical signs on delay in time to lumbar puncture in adult community acquired bacterial meningitis.

Methods

All adult cases of culture positive cerebrospinal fluids in East Denmark from 2002 to 2004 were included. Medical records were collected retrospectively with 98.4% case completeness. "Cardinal symptoms" were defined as: altered consciousness, fever, nuchal rigidity, subjective headache, convulsions prior to admission and petechiae.

Results

132 cases were included. Diagnosis at admission included meningitis (39%, n = 50), pneumonia/sepsis (9%, n = 12), acute cerebral vascular disease (10%, n = 13), febrilia (11%, n = 14), confusion/unconsciousness (15%, n = 19), other (16%, n = 21); with median time from admission to lumbar puncture 0.95 hr, 4.5 hr, 3,5 hr, 1.9 hr, 2.3 hr, and 4.15 hr (p < 0.0001 Kruskal-Wallis), respectively. When a minimum "3 out of 6 clinical cardinal symptoms" indicated meningitis, median time to lumbar puncture was shorter (1.0 hr vs 1.9 hr, p < 0.001).

Conclusion

Delay in time to lumbar puncture correlated to admission diagnosis and to initial clinical signs.

Author information

Correspondence to Rasmus Køster-Rasmussen.

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Open Access This article is published under license to BioMed Central Ltd. This is an Open Access article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Keywords

  • Clinical Sign
  • Meningitis
  • Cerebrospinal Fluid
  • Vascular Disease
  • Emergency Medicine