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Related Experiment Video

Updated: Mar 8, 2026

Transient Middle Cerebral Artery Occlusion Model of Neonatal Stroke in P10 Rats
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Clinical Characteristics, Risk Factors, and Outcomes Associated With Neonatal Hemorrhagic Stroke: A Population-Based

Lauran Cole1, Deborah Dewey2, Nicole Letourneau2

  • 1Calgary Pediatric Stroke Program, University of Calgary, Calgary, Alberta, Canada.

JAMA Pediatrics
|January 24, 2017
PubMed
Summary

Neonatal hemorrhagic stroke (NHS) affects at least 1 in 6300 newborns, with varied causes and often poor outcomes. Understanding its epidemiology is crucial for prevention and rehabilitation strategies.

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Area of Science:

  • Neurology
  • Pediatrics
  • Epidemiology

Background:

  • Neonatal hemorrhagic stroke (NHS) causes significant injury and disability in term newborns.
  • The clinical epidemiology of NHS is not well-defined, limiting outcome improvement strategies.

Purpose of the Study:

  • To characterize the incidence, types, presentations, associated factors, and outcomes of neonatal hemorrhagic stroke.

Main Methods:

  • Population-based, nested case-control study using a provincial registry and prospective data.
  • Included term neonates with MRI-confirmed NHS; controls recruited from a population-based study.
  • Utilized structured medical record review, blinded neuroimaging scoring, and logistic regression for risk factor analysis.

Main Results:

  • Identified 86 NHS cases; incidence of all forms was 1 in 6300 live births.
  • Etiologies included idiopathic (37%), hemorrhagic transformation of ischemic injuries (35%), and presumed perinatal (10%).
  • Poor neurological outcomes were observed in 44% of cases at median 37-month follow-up.

Conclusions:

  • Neonatal hemorrhagic stroke is more common than previously thought, with diverse etiologies.
  • Clinical associations do not predict NHS, recurrence is rare, and outcomes are frequently poor.
  • There is a critical need for enhanced prevention and rehabilitation efforts for neonatal hemorrhagic stroke.