4.6 Article

Neuropsychological and psychiatric outcomes in encephalitis: A multi-centre case-control study

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PLOS ONE
卷 15, 期 3, 页码 -

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PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0230436

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资金

  1. National Institute for Health Research [RP-PG-0108-10,048]
  2. National Institute for Health Research (NIHR) Health Protection Research Unit in Emerging and Zoonotic Infections, NIHR Global Health Research Group on Brain Infections [17/63/110]
  3. European Union's Horizon 2020 research and innovation program ZikaPLAN (Preparedness Latin America Network) [734584]
  4. Biomedical Research Centre (BRC) of the Institute of Psychiatry, Psychology and Neuroscience
  5. South London and Maudsley NHS Foundation Trust
  6. King's College London

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Objectives Our aim was to compare neuropsychological and psychiatric outcomes across three encephalitis aetiological groups: Herpes simplex virus (HSV), other infections or autoimmune causes (Other), and encephalitis of unknown cause (Unknown). Methods Patients recruited from NHS hospitals underwent neuropsychological and psychiatric assessment in the short-term (4 months post-discharge), medium-term (9-12 months after the first assessment), and long-term (>1-year). Healthy control subjects were recruited from the general population and completed the same assessments. Results Patients with HSV were most severely impaired on anterograde and retrograde memory tasks. In the short-term, they also showed executive, IQ, and naming deficits, which resolved in the long-term. Patients with Other or Unknown causes of encephalitis showed moderate memory impairments, but no significant impairment on executive tests. Memory impairment was associated with hippocampal/medial temporal damage on magnetic resonance imaging (MRI), and naming impairment with left temporal and left frontal abnormalities. Patients reported more subjective cognitive complaints than healthy controls, with tiredness a significant problem, and there were high rates of depression and anxiety in the HSV and the Other encephalitis groups. These subjective, self-reported complaints, depression, and anxiety persisted even after objectively measured neuropsychological performance had improved. Conclusions Neuropsychological and psychiatric outcomes after encephalitis vary according to aetiology. Memory and naming are severely affected in HSV, and less so in other forms. Neuropsychological functioning improves over time, particularly in those with more severe short-term impairments, but subjective cognitive complaints, depression, and anxiety persist, and should be addressed in rehabilitation programmes.

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