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What is the risk of bacterial meningitis in infants who present to the emergency department with fever and pyuria?

Published online by Cambridge University Press:  21 May 2015

Ran D. Goldman*
Affiliation:
Division of Pediatric Emergency Medicine and Department of Pediatrics, Hospital for Sick Children, Toronto, Ont. Department of Pediatrics, University of Toronto, Toronto, Ont.
Anne Matlow
Affiliation:
Infection, Immunity, Injury and Repair Programme, Department of Pediatrics, Hospital for Sick Children, Toronto, Ont. Department of Pediatrics, University of Toronto, Toronto, Ont.
Lauren Linett
Affiliation:
Division of Pediatric Emergency Medicine and Department of Pediatrics, Hospital for Sick Children, Toronto, Ont. Department of Pediatrics, University of Toronto, Toronto, Ont.
Dennis Scolnik
Affiliation:
Division of Pediatric Emergency Medicine and Department of Pediatrics, Hospital for Sick Children, Toronto, Ont. Department of Pediatrics, University of Toronto, Toronto, Ont.
*
Division of Pediatric Emergency Medicine, Hospital for Sick Children, 555 University Ave., Toronto ON M5G 1X8; 416 813-4915, fax 416 813-5043, [email protected]

Abstract

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Objectives:

To determine the rate of bacterial meningitis among febrile infants in the emergency department (ED) who have pyuria detected in an initial catheterized urine specimen.

Methods:

This retrospective chart review, conducted at the Hospital for Sick Children, Toronto, Ont., involved all children aged 0 to 3 months who presented to the ED with fever and pyuria (≥10 white blood cells/mm3) over a 3-year period. Cerebrospinal fluid (CSF) was evaluated using standard methods, and the rate of meningitis in children with pyuria was determined.

Results:

The study sample included 211 infants with fever and pyuria — 79 of these under 1 month of age. Eighty-one percent (171/211) had positive urine cultures, and 143 underwent lumbar puncture to rule out meningitis. Of these, 140 CSF samples were culture negative and 3 grew coagulase negative Staphylococcus — 2 because of contamination and 1 because of a ventriculo-peritoneal shunt infection. Both children with CSF contamination grew Escherichia coli in the urine. The rate of bacterial meningitis in the study sample was 0% (95% confidence interval, 0%–2.6%).

Conclusions:

In this study of febrile children under 90 days of age with fever and pyuria, the incidence of concurrent meningitis was 0%. This suggests that recommendations for mandatory lumbar puncture in such children should be reconsidered. However, until larger prospective studies define a patient subset that does not require CSF analysis, it is prudent to rule out meningitis, administer parenteral antibiotics for urinary tract infection, and admit for close observation.

Type
Pediatric EM • Pédiatrie d’urgence
Copyright
Copyright © Canadian Association of Emergency Physicians 2003

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