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Published Online First: 17 January 2006. doi:10.1136/adc.2005.082826
Archives of Disease in Childhood - Fetal and Neonatal Edition 2006;91:F357-F358
Copyright © 2006 BMJ Publishing Group Ltd & Royal College of Paediatrics and Child Health
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ORIGINAL ARTICLE

Cerebrospinal fluid leucocyte counts in healthy neonates

A Martín-Ancel1, A García-Alix2, S Salas2, F del Castillo2, F Cabañas2, J Quero2

1 Department of Neonatology, Sant Joan de Déu University Hospital, Barcelona, Spain
2 Department of Paediatrics, La Paz Children’s Hospital, Madrid, Spain

Correspondence to:
Correspondence to:
Dr Martín-Ancel
Department of Neonatology, Sant Joan de Déu University Hospital, Passeig Sant Joan de Déu 2, Esplugues de Llobregat, Barcelona 08950, Spain; amartina{at}hsjdbcn.org

Objectives: To determine the cerebrospinal fluid (CSF) white blood cell (WBC) count of normal term neonates, and compare the CSF WBC profile of normal and symptomatic infants without infection of the central nervous system (CNS).

Method: Neonates were included if (a) they were at risk of congenital Toxoplasma infection and had undergone a lumbar puncture to assess CNS involvement, and (b) serial specific serum IgG and IgM determinations had ruled out congenital infection. According to neonatal chart reviews, 30 consecutive patients without CNS infection were classified as normal (absolutely asymptomatic) or symptomatic (any kind of symptoms).

Results: CSF WBC count was higher in 11 symptomatic (7/mm3, 0–30/mm3) than in 19 normal (1/mm3, 0–5/mm3) neonates (p<0.01).

Conclusion: Normal neonatal CSF contains up to 5 WBCs/mm3. Mild pleocytosis can be found in symptomatic infants without CNS infection.

Abbreviations: CNS, central nervous system; CSF, cerebrospinal fluid; WBC, white blood cell

Keywords: cerebrospinal fluid; leucocytes; reference values; infection






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