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How and when to use CSF to investigate neonates and children with possible central nervous system infection
Gemma Winzor1,2, Sowsan F Atabani3,2
1Birmingham Public Health laboratory, National Infection Service, Public Health England Midlands and East Region, Birmingham, UK g.winzor@nhs.net.
Insights
This study reviews diagnostic strategies for central nervous system (CNS) infections in children. It emphasizes timely lumbar puncture (LP) and cerebrospinal fluid (CSF) analysis for accurate diagnosis and effective treatment.
Area of Science:
- Pediatric Infectious Diseases
- Neuroscience
- Clinical Diagnostics
Background:
- Central nervous system (CNS) infections in children, such as meningitis and encephalitis, present with critical symptoms like fever and altered consciousness.
- Accurate and timely diagnosis is crucial for effective management, infection control, and public health.
- The role and timing of lumbar puncture (LP) and the impact of antimicrobial pretreatment on cerebrospinal fluid (CSF) analysis require careful consideration.
Purpose of the Study:
- To summarize current evidence and guidance on the diagnostic approach to suspected CNS infections in children.
- To optimize the use of available diagnostic tests, including CSF analysis.
- To guide clinicians in diagnostic stewardship for improved patient outcomes and public health.
Main Methods:
- Review of current evidence and clinical guidelines.
- Analysis of the utility of rapidly available CSF biochemical tests (protein, glucose, lactate) and microscopy.
- Consideration of factors influencing diagnostic test selection and interpretation.
Main Results:
- Rapid CSF biochemical tests and microscopy offer prompt insights into infective etiology.
- Antimicrobial pretreatment can potentially affect CSF results, necessitating careful interpretation.
- Optimized diagnostic stewardship balances individual patient needs with broader public health implications.
Conclusions:
- Timely and appropriate lumbar puncture (LP) is essential for diagnosing CNS infections in children.
- Judicious use of CSF analysis, considering factors like antimicrobial pretreatment, enhances diagnostic accuracy.
- Effective diagnostic stewardship improves patient care and supports infection control strategies.
Abstract:
A child presented to the emergency department with fever, reduced consciousness, irritability and reduced oral intake. Infective meningitis and encephalitis were within the differential diagnoses. Is a lumbar puncture (LP) indicated and, if so, what is the optimal timing of LP? Will antimicrobial pretreatment affect the cerebrospinal fluid (CSF) results? How can clinicians optimise diagnostic stewardship to benefit individual patients and society at large? Interpretation of rapidly available CSF biochemical tests (protein, glucose and lactate levels) and microscopy can provide a prompt insight into the infective aetiology and inform treatment and further diagnostic testing strategies. Diagnosis of an aetiological pathogen in a patient presenting with central nervous system (CNS) infection has clinical, infection control and public health implications. A plethora of tests are available to enable CSF analysis in patients with possible CNS infection. We aimed to summarise current evidence and guidance to ensure the best possible use of the diagnostics available.
