4.5 Article

Profile of minor neurological findings after perinatal asphyxia

Journal

ACTA PAEDIATRICA
Volume 111, Issue 2, Pages 291-299

Publisher

WILEY
DOI: 10.1111/apa.16133

Keywords

general movements; hypoxic-ischaemic encephalopathy; infant neurological examination; minor neurological finding; perinatal asphyxia

Categories

Funding

  1. Foundation for Pediatric Research
  2. Academy of Finland [314450, 335788]
  3. Finnish Brain Foundation
  4. Suomen Aivosaatio
  5. Helsinki University Central Hospital
  6. Sigrid Juselius Foundation
  7. Finnish Medical Society Duodecim
  8. Academy of Finland (AKA) [335788, 314450, 314450] Funding Source: Academy of Finland (AKA)

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The study found that most infants with perinatal asphyxia, with or without HIE, showed atypical neurological findings in sequential examinations. White matter T2 hyperintensity was significantly associated with atypical spontaneous movements in the HINE.
Aim To characterise the spectrum of findings in sequential neurological examinations, general movements (GM) assessment and magnetic resonance imaging (MRI) of infants with perinatal asphyxia. Methods The prospective cohort study of term infants with perinatal asphyxia treated at Helsinki University Hospital's neonatal units in 2016-2020 used Hammersmith Neonatal Neurological Examination (HNNE) and brain MRI at 2 weeks and Hammersmith Infant Neurological Examination (HINE) and GM assessment at 3 months of age. Results Analysis included 50 infants: 33 displaying perinatal asphyxia without hypoxic-ischaemic encephalopathy (HIE), seven with HIE1 and 10 with HIE2. Of the infants with atypical HNNE findings, 24/25 perinatal asphyxia without HIE cases, 5/6 HIE1 cases and all 10 HIE2 cases showed atypical findings in the HINE. The HINE identified atypical spontaneous movements significantly more often in infants with white matter T2 hyperintensity. Conclusion In this cohort, most infants with perinatal asphyxia, with or without HIE, presented atypical neurological findings in sequential examinations. The profile of neurological findings for children with perinatal asphyxia without HIE resembled that of children with HIE. White matter T2 hyperintensity was associated with atypical spontaneous movements in the HINE and was a frequent MRI finding also in perinatal asphyxia without HIE.

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