A proposed classification for subtypes of arterial ischaemic stroke in children

E Wraige1, K R E Pohl, V Ganesan

  • 1Department of Paediatric Neurology, Guy's Hospital, UK.

Insights

A new classification system, the Paediatric Stroke Classification (PSC), has been developed to categorize childhood arterial ischaemic stroke (AIS) into eight relevant aetiological subtypes. This system shows good inter-rater agreement and will aid multicenter research.

Area of Science:

  • Neurology
  • Paediatrics
  • Vascular Medicine

Background:

  • Childhood arterial ischaemic stroke (AIS) requires a specific classification system.
  • Existing systems like TOAST (Trial of Org 10172 in Acute Stroke Therapy) have limitations in paediatric populations.
  • Identifying aetiologies is crucial for understanding natural history and guiding treatment.

Purpose of the Study:

  • To propose and validate a novel classification system for paediatric AIS.
  • To adapt and refine existing classifications for childhood stroke aetiologies.
  • To establish a standardized method for categorizing the causes of stroke in children.

Main Methods:

  • Literature review to identify paediatric AIS aetiologies.
  • Adaptation of the TOAST classification subtypes.
  • Preliminary validation using clinical vignettes and three independent raters.
  • Iterative refinement of categories and definitions based on rater feedback.

Main Results:

  • Eight distinct aetiological subtypes for paediatric AIS were defined: sickle cell disease, cardioembolic, moyamoya syndrome, cervical arterial dissection, steno-occlusive cerebral arteriopathy, other determined, multiple probable/possible, and undetermined aetiology.
  • High inter-rater agreement was observed during the preliminary validation.
  • Disagreements were analyzed to refine category definitions.

Conclusions:

  • The Paediatric Stroke Classification (PSC) effectively categorizes children with AIS into relevant aetiological subtypes.
  • The PSC is a valuable tool for multicenter studies on paediatric stroke natural history and treatment.
  • Further independent validation of the PSC is recommended.

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