CC BY 4.0 · Journal of Child Science 2024; 14(01): e13-e18
DOI: 10.1055/s-0044-1787102
Original Article

Outcome and Prognostic Factors of Pediatric Encephalitis in Thailand

Vitchayaporn Emarach Saengow
1   Department of Pediatrics, Maharat Nakhon Ratchasima Hospital, Nakhon Ratchasima, Thailand
,
Natnicha Praphaphanthasak
1   Department of Pediatrics, Maharat Nakhon Ratchasima Hospital, Nakhon Ratchasima, Thailand
› Author Affiliations

Abstract

Encephalitis, a severe central nervous system infection, poses significant morbidity and mortality risks. Etiologically, this condition can arise from infections or immune-mediated mechanisms, with varying causative agents across regions. Despite limited studies on pediatric encephalitis in Thailand, our retrospective cohort study aimed to discern the characteristics, outcomes, and prognostic factors influencing clinical results. We examined patients under 15 years of age admitted to Maharat Nakhon Ratchasima Hospital from January 1, 2007 to December 31, 2022, recording baseline data encompassing clinical manifestations, etiology, investigations, and treatments. The study defined outcomes in terms of morbidity, subsequent epilepsy incidence, and mortality rates evaluated via the modified Rankin Scale. Among 183 enrolled patients (age range 5 days to 15 years, mean age 7.4 years), males comprised 54.1%. Viral encephalitis (35.52%) and immune-mediated encephalitis (22.4%) emerged as the prevailing etiologies, with herpes simplex, dengue, and influenza virus as prominent viral pathogens. Anti-N-methyl-D-aspartame receptor encephalitis (56.1%) led among immune-mediated cases. Initially, 94.53% of patients displayed moderate-to-severe disability, while 45.7% exhibited clinical improvement within 6 months. Subsequent epilepsy ensued in 38.8% of cases, with an overall mortality rate of 19%, notably higher in viral encephalitis instances. Our findings underscore a predilection for viral pathogens in pediatric encephalitis cases, contributing to inferior prognoses. This study accentuates the necessity of understanding etiological patterns and prognostic markers to enhance clinical outcomes in this vulnerable population segment.



Publication History

Received: 28 December 2023

Accepted: 12 April 2024

Article published online:
27 May 2024

© 2024. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

Georg Thieme Verlag KG
Rüdigerstraße 14, 70469 Stuttgart, Germany

 
  • References

  • 1 Bystritsky RJ, Chow FC. Infectious meningitis and encephalitis. Neurol Clin 2022; 40 (01) 77-91
  • 2 Giovane RA, Lavender PD. Central nervous system infections. Prim Care 2018; 45 (03) 505-518
  • 3 Bale Jr JF. Viral encephalitis. Med Clin North Am 1993; 77 (01) 25-42
  • 4 Messacar K, Fischer M, Dominguez SR, Tyler KL, Abzug MJ. Encephalitis in US children. Infect Dis Clin North Am 2018; 32 (01) 145-162
  • 5 Aneja S, Sharma S. Diagnosis and management of acute encephalitis in children. Indian J Pediatr 2019; 86 (01) 70-75
  • 6 Cellucci T, Van Mater H, Graus F. et al. Clinical approach to the diagnosis of autoimmune encephalitis in the pediatric patient. Neurol Neuroimmunol Neuroinflamm 2020; 7 (02) x
  • 7 Nosadini M, Thomas T, Eyre M. et al. International consensus recommendations for the treatment of pediatric NMDAR antibody encephalitis. Neurol Neuroimmunol Neuroinflamm 2021; 8 (05) x
  • 8 Graus F, Titulaer MJ, Balu R. et al. A clinical approach to diagnosis of autoimmune encephalitis. Lancet Neurol 2016; 15 (04) 391-404
  • 9 Erickson TA, Muscal E, Munoz FM. et al. Infectious and autoimmune causes of encephalitis in children. Pediatrics 2020; 145 (06) e20192543
  • 10 Kumar R. Understanding and managing acute encephalitis. F1000 Res 2020; 9: 60
  • 11 Britton PN, Dale RC, Blyth CC. et al. Causes and clinical features of childhood encephalitis: a multicenter, prospective cohort study. Clin Infect Dis 2020; 70 (12) 2517-2526
  • 12 Brisca G, Marini C, Buratti S. et al. Acute pediatric encephalitis: etiology, course, and outcome of a 12-year single-center immunocompetent cohort. J Neurol 2023; 270 (10) 5034-5047
  • 13 Hasbun R, Wootton SH, Rosenthal N. et al. Epidemiology of meningitis and encephalitis in infants and children in the United States, 2011–2014. Pediatr Infect Dis J 2019; 38 (01) 37-41
  • 14 Goto S, Nosaka N, Yorifuji T. et al. Epidemiology of pediatric acute encephalitis/encephalopathy in Japan. Acta Med Okayama 2018; 72 (04) 351-357
  • 15 de Blauw D, Bruning AHL, Busch CBE. et al; Dutch Pediatric Encephalitis Study Group. Epidemiology and etiology of severe childhood encephalitis in the Netherlands. Pediatr Infect Dis J 2020; 39 (04) 267-272
  • 16 Chokephaibulkit K, Kankirawatana P, Apintanapong S. et al. Viral etiologies of encephalitis in Thai children. Pediatr Infect Dis J 2001; 20 (02) 216-218
  • 17 Hatachi T, Michihata N, Inata Y. et al. Prognostic factors among children with acute encephalitis/encephalopathy associated with viral and other pathogens. Clin Infect Dis 2021; 73 (01) 76-82
  • 18 Khandaker G, Jung J, Britton PN, King C, Yin JK, Jones CA. Long-term outcomes of infective encephalitis in children: a systematic review and meta-analysis. Dev Med Child Neurol 2016; 58 (11) 1108-1115
  • 19 Schaller MA, Wicke F, Foerch C, Weidauer S. Central nervous system tuberculosis: etiology, clinical manifestations and neuroradiological features. Clin Neuroradiol 2019; 29 (01) 3-18
  • 20 Iro MA, Sadarangani M, Nickless A, Kelly DF, Pollard AJ. A population-based observational study of childhood encephalitis in children admitted to pediatric intensive care units in England and Wales. Pediatr Infect Dis J 2019; 38 (07) 673-677
  • 21 Hon K-LE, Tsang YC, Chan LC. et al. Outcome of encephalitis in pediatric intensive care unit. Indian J Pediatr 2016; 83 (10) 1098-1103
  • 22 Elenga N, Roux A, Cuadro-Alvarez E, Martin E, Kallel H, Defo A. Etiology and prognosis of encephalitis in French Guianese children: a retrospective record-based study. J Infect Public Health 2020; 13 (07) 1051-1053
  • 23 Ray S, Rayamajhi A, Bonnett LJ, Solomon T, Kneen R, Griffiths MJ. The inter-rater reliability and prognostic value of coma scales in Nepali children with acute encephalitis syndrome. Paediatr Int Child Health 2018; 38 (01) 60-65