Emergency Medicine · Vol. 4, No. 1 · 2019 · pp. 20–24 · e-ISSN 2379-4046
Diagnostic Advances in Acute Viral Meningitis: Any Novelty for the Physician?
Ozgur Karcioglu, Ebru Yilmaz
Emergency Physician, Department of Emergency Medicine, University of Health Sciences, Istanbul Education and Research Hospital, Istanbul,TurkeyTurkey
Emergency Physician, Deptartment of Emergency Medicine, Nizip Community Hospital, Gaziantep,TurkeyTurkey
DOI: https://doi.org/10.17140/emoj-4-150 · Published 2019-01-07 · Licence: https://creativecommons.org/licenses/by/4.0 · © 2019 The Author(s)
Also available as PDF (figures and tables appear in the PDF).
Abstract
Acute viral meningitis (AVM) constitute an important cause of mortality and neurological morbidity within the last decades, in spite of all diagnostic and therapeutic advances in medical technology. Diagnostic procedures consist of lumbar puncture, hemoculture, complete blood cell count (including, leukocytes), procalcitonin, lactate and glucose to give an overall insight for disease; while polymerase chain reaction (PCR) and cerebrospinal fluid (CSF) analyses (urine reagent strips, glucose, protein, and microscopic examination) are used to diagnose herpetic meningeal involvement and most other viral infections affecting central nervous system (CNS). Findings in blood and CSF work-up after a clinical index of suspicion result in a high yield of diagnosis. Technological advances should be coupled with clinical findings to produce an accurate clinical management in the target population. This review is intended to analyze the epidemiology, clinical manifestation, findings on examination, and diagnostic tools to be utilized in patients suspected to have AVM in light of recent advances and research data, and to culminate up-to-date concept of AVM for primary care and emergency physicians.
Keywords: Acute viral meningitis; Aseptic meningitis; Acute viral encephalitis; Central nervous system infection; Diagnosis; Lumbar puncture
Conclusion
cells. In Herpetic AVE, red blood cells are proportional to the degree of frontal/temporal damage. Interestingly, CSF lactate levels AVM is an outstanding emergency which can lead to morbidity and are proportional to the number of red blood cells found in CSF. mortality all over the world. Findings in blood and CSF work-up after a clinical index of suspicion result in a high yield of diagnosis. Next-generation sequencing (NGS) is the diagnostic mo- Technological advances should be coupled with clinical findings dality of choice to screen for viral deoxyribo nucleic acid (DNA) to produce accurate clinical management in the target population. in CSF in cases with strong suspicion for AVM or AVE.30
Conflicts Of Interest
Polymerase chain reaction (PCR) is used to diagnose herpetic meningeal involvement. Of note, identification of HSV The authors declare that they have no conflicts of interest. DNA in the CSF by PCR is of diagnostic value in herpetic meningoencephalitis.7 In patients with AVE due to viruses with a CSF
References
- PrasadKKarlupiaN. Prevention of bacterial meningitis: An ABM.26 overview of cochrane systematic reviews. Respir Med. 2007; 101(10) :2037-2043. doi: 10.1016/j.rmed.2007.06.030 Routine workup on blood samples (e.g. leukocytes, neutrophil ratios and platelets), rarely give clues in the diagnosis of10.1016/j.rmed.2007.06.030 https://doi.org/10.1016/j.rmed.2007.06.030
- BookstaverPBMohornPLShahA. Management AVM. Bacterial infection may be identified in the work-up of the of viral central nervous systemInfections: A primer for clini-CSF via an LP to be performed in suspicion of bacterial origin of cians. J Cent Nerv Syst Dis. 2017; 9: 1179573517703342. doi: meningoencephalitis. Likewise, Gram stain/culture of the patho- 10.1177/1179573517703342 gen is mostly useless in viral infections of CNS10.1177/1179573517703342 https://doi.org/10.1177/1179573517703342
- ViallonADesseigneNMarjolletO. Meningitis in adult and CSF. The suspected diagnosis is verified by the detection of patients with a negative direct cerebrospinal fluid examination: TBEV-specific IgM and IgG antibodies in the sera and the pres-Value of cytochemical markers for differential diagnosis. Crit Care. ence of elevated cell counts in CSF.18 2011; 15(3): R136. doi: 10.1186/cc10254 A simple concurrent bedside glucose measurement in10.1186/cc10254 https://doi.org/10.1186/cc10254
- Bertrand A, Leclercq D, Martinez-Almoyna L, Girard N, Stahl the samples from blood and CSF can allow rapid identification JP, De-Broucker T. MR imaging of adult acute infectious encephaof AVM.31 The best cut off point for the proportion of CSF over litis. Med Mal Infect. 2017; 47(3): 195-205. doi: 10.1016/j.medblood glucose produced via a point-of-care glucometer has been mal.2017.01.002 noted as 0.46, (it has 94.1% sensitivity, 91% specificity, and a positive likelihood ratio of 10 in discerning these two entities). The https://doi.org/10.1016/j.medblood
- KawadaJI. Neurological disorders associated with human alabove mentioned practical modality carries the potential to prophaherpesviruses. Adv Exp Med Biol. 2018; 1045: 85-102. doi: vide faster diagnostic evaluation of the disease. 10.1007/978-981-10-7230-7_5 Viallon et al5 reported that serum PCT and CSF lactate10.1007/978-981-10-7230-7_5 https://doi.org/10.1007/978-981-10-7230-7_5
- MurrayKONolanMSRoncaSE. The neurocognitive and are the best markers for differentiating between bacterial infection MRI outcomes of west nile virus infection: Preliminary analysis and AVM, even in the lack of microbiologic biomarkers on presenusing an external control group. Front Neurol. 2018; 9: 111. doi: tation and/or on admission to hospital.5 10.3389/fneur.2018.00111 Role of Neuroimaging10.3389/fneur.2018.00111 https://doi.org/10.3389/fneur.2018.00111
- LeviME. Zika virus: A cause of concern in transplantation?. Curr Opin Infect Dis. 2017; 30(4): 340-345. doi: 10.1097/ CT or MRI can be utilized to rule out CNS mass lesions, e.g., brain QCO.0000000000000384 abscess, brain tumors, bleed. These modalities may also be of value in the differential diagnosis of AVM, such that sarcoid meningitis
- YunSILeeYM. Zika virus: An emerging flavivirus. J Microbiol. and carcinomatous meningitis. 2017; 55(3): 204-219. doi: 10.1007/s12275-017-7063-610.1007/s12275-017-7063-6 https://doi.org/10.1007/s12275-017-7063-6
- Dias IKR, Sobreira CLDS, Martins RMG, et al. Zika virus: - A borne encephalitis: A prospective cohort study. PLoS One. 2016; review of the main aspects of this type of arbovirosis. Rev Soc Bras 11(4): e0154143. doi: 10.1371/journal.pone.0154143 Med Trop. 2018; 51(3): 261-269. doi: 10.1590/0037-8682-0130- 2018 22. Kaiser R. The clinical and epidemiological profile of tickborne encephalitis in southern Germany 1994-98: A prospective https://doi.org/10.1371/journal.pone.0154143
- Aragao MDFV, Linden VVD, Brainer-Lima AM, et al. Clinical study of 656 patients. Brain. 1999; 122: 2067-2078. doi: 10.1093/ features and neuroimaging (CT and MRI) findings in presumed brain/122.11.2067 Zika virus related congenital infection and microcephaly: Retrospective case series study. BMJ. 2016; 353: i1901. doi: 10.1136/ 23. Hrnjaković Cvjetković I, Cvjetković D, et al. Tick-borne enbmj.i3182 cephalitis virus infection in humans. Med Pregl. 2016; 69(3-4): 93- 98
- RussoFBBeltrão-BragaPCB. The impact of Zika virus in the brain. Biochem Biophys Res Commun. 2017; 492(4): 603-607. doi: 24. Taba P, Schmutzhard E, Forsberg P, et al. EAN consensus 10.1016/j.bbrc.2017.01.074 review on prevention, diagnosis and management of tick-borne encephalitis. Eur J Neurol. 2017; 24(10): 1214-e61. doi: 10.1111/10.1016/j.bbrc.2017.01.074 https://doi.org/10.1016/j.bbrc.2017.01.074
- SpudichSGonzález-ScaranoF. HIV-1-related central nerene.13356 vous system disease: Current issues in pathogenesis, diagnosis, and treatment. Cold Spring Harb Perspect Med. 2012; 2(6): a007120. doi: 25. Billioux BJ, Smith B, Nath A. Neurological complications of 10.1101/cshperspect.a007120 ebola virus infection. Neurotherapeutics. 2016; 13(3): 461-470. doi: 10.1007/s13311-016-0457-z10.1101/cshperspect.a007120 https://doi.org/10.1101/cshperspect.a007120
- BrewBJGarberJY. Neurologic sequelae of primary HIV infection. Handb Clin Neurol. 2018; 152: 65-74. doi: 10.1016/B978- 26. Cunha BA. The clinical and laboratory diagnosis of acutemen- 0-444-63849-6.00006-2 ingitis and acuteencephalitis. Expert Opin Med Diagn. 2013; 7(4): 343-364. doi: 10.1517/17530059.2013.80450810.1016/b978-26 https://doi.org/10.1016/b978-26
- SeethalaRTakharSS. Viruses. In: Walls R, Hockberger R, Gausche-Hill M (eds), Rosen’s Emergency Medicine Concepts and Clinical 27. Lannigan R, Mac Donald MA, Marrie TJ, Haldane EV. Evaluath Practice. 9th Edn. Amsterdam, Netherlands: Elsevier. 2017. 1598tion of cerebrospinal fluid lactic acid levels as an aid in differential 1618. diagnosis of bacterial and viral meningitis in adults. J Clin Microbiol. 1980; 11(4): 324-327
- Du Four S, Mertens R, Wiels W, De Keyser J, Bissay V, Flamez A. Meningoencephaloradiculitis following infection with tick borne 28. Cunha B, Halperin JJ. Clinical approach in encephalitis. In: encephalitis virus: Case report and review of the literature. Acta Halperin JJ, ed. Encephalitis: Diagnosis and Treatment. Boca Raton, Neurol Belg. 2018; 118(1): 93-96. doi: 10.1007/s13760-017-0873-9 Florida, US: CRC Press. 2008. 1-19 https://doi.org/10.1007/s13760-017-0873-9
- Kaiser R.[Tick-borne encephalitis]. Nervenarzt. [In: German]. 29. Booss J, Esiri M. Diagnostic evaluation. In: Booss J, Esiri M, 2016; 87(6): 667-80. doi: 10.1007/s00115-016-0134-9 eds. Viral Encephalitis in Humans. Washington, DC: ASM Press. 2003. 21-96 https://doi.org/10.1007/s00115-016-0134-9
- GrardGMoureauGCharrelRN. Genetic characterization of tick-borne flaviviruses: New insights into evolution, patho- 30. Guan H, Shen A, Lv X, et al. Detection of virus in CSF from genic determinants and taxonomy. Virology. 2007; 361: 80-92. doi: the cases with meningoencephalitis by next-generation sequenc- 10.1016/j.virol.2006.09.015 ing. J Neurovirol. 2016; 22(2): 240-245. doi: 10.1007/s13365-015- 0390-710.1016/j.virol.2006.09.015 https://doi.org/10.1016/j.virol.2006.09.015
- LindquistL. Tick-borne encephalitis. Handb Clin Neurol. 2014; 123: 531-559. doi: 10.1016/B978-0-444-53488-0.00025-0 31. Rousseau G, Asmolov R, Grammatico-Guillon L, et al. Rapid detection of bacterial meningitis using a point-of-care10.1016/b978-0-444-53488-0.00025-0 https://doi.org/10.1016/b978-0-444-53488-0.00025-0
- LenhardTOttDJakobNJ. Predictors, neuroimaging glucometer. Eur J Emerg Med. 2017; 26(1): 41-46. doi: 10.1097/ characteristics and long-term outcome of severe European tick-MEJ.0000000000000495