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Published on: August 18, 2015
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.
Abstract:
The aim of this study was to propose a classification system for childhood arterial ischaemic stroke (AIS). Subtypes from the Trial of Org 10172 in Acute Stroke Therapy (TOAST) classification, previously shown to be applicable to children, were retained in the proposed Paediatric Stroke Classification (PSC). Additional important paediatric AIS aetiologies were identified from a literature review. Preliminary validation was performed by three raters who categorized clinical vignettes from 135 patients (66 male; median age 6.3 y, range 0.1 to 16 y). Eight aetiological subtypes were identified and defined, as follows: (1) sickle cell disease; (2) cardioembolic; (3) moyamoya syndrome; (4) cervical arterial dissection; (5) steno-occlusive cerebral arteriopathy; (6) other determined aetiology; (7) multiple probable/possible aetiologies; and (8) undetermined aetiology. There was very good agreement between the raters about categorization of the vignettes. Causes of disagreement were identified and final categories and definitions were modified accordingly. We conclude that the PSC enables the categorization of children with AIS into aetiological subtypes relevant to this age group. This will be useful in multicentre studies of natural history and treatment but will require further independent validation.
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