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Clinical and MRI features of neurological complications after influenza A (H1N1) infection in critically ill children.

Abstract：

BACKGROUND:Influenza A (H1N1) can cause severe neurological complications. OBJECTIVE:The purpose of this study was to analyze clinical and MRI features of neurological complications after H1N1 infection in critically ill children. MATERIALS AND METHODS:We retrospectively analyzed clinical and neuroimaging findings in 17 children who were hospitalized in an intensive care unit with severe neurological complications after H1N1 infection in South China between September 2009 and December 2011. All children underwent pre- and post-contrast-enhanced brain MRI. Postmortem studies were performed in two children. RESULTS:Six children died, five because of acute necrotizing encephalopathy (ANE) and one because of intracranial fungal infection. Eleven recovered; their manifestations of H1N1 were meningitis (3), encephalitis (1) and influenza encephalopathy (7). MRI features of ANE included multiple symmetrical brain lesions demonstrating prolonged T1 and T2 signal in the thalami, internal capsule, lenticular nucleus and pontine tegmentum. Postmortem MRI in two children with acute necrotizing encephalopathy showed diffuse prolonged T1 and T2 signal in the bilateral thalami, brainstem deformation and tonsillar herniation. CONCLUSION:Fatal neurological complications in children after H1N1 infection include ANE and opportunistic fungal infection. MRI is essential for identification of neurological complications and for clinical evaluation.

journal_name

Pediatr Radiol

journal_title

Pediatric radiology

authors

Zeng H,Quinet S,Huang W,Gan Y,Han C,He Y,Wang Y

doi

10.1007/s00247-013-2682-5

subject

Has Abstract

pub_date

2013-09-01 00:00:00

pages

1182-9

issue

9

eissn

0301-0449

issn

1432-1998

journal_volume

43

pub_type

杂志文章

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