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Microfluidics in Assessing Platelet Function
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The relationship between mean platelet volume, stroke subtype and clinical outcome
1Stroke Research Group, Department of Medicine, King's College School of Medicine and Dentistry, London, UK.
Platelets
|June 24, 2006
Summary
Elevated mean platelet volume (MPV), indicating larger platelets, is linked to ischemic stroke, particularly cortical infarction. This finding persists and predicts poor functional outcomes in stroke patients.
Area of Science:
- Hematology
- Neurology
- Cardiovascular Research
Background:
- Platelets are key in atherothrombotic disease and ischemic stroke.
- Larger platelets (thrombomegaly) are associated with increased activity.
- Previous research suggests a link between platelet size and stroke severity.
Purpose of the Study:
- To investigate if thrombomegaly is specific to cortical infarction versus lacunar infarcts.
- To determine the association between mean platelet volume (MPV) and functional outcome post-stroke.
- To examine changes in MPV and platelet count (PC) over time and in different stroke types.
Main Methods:
- Studied MPV and PC in 167 hospitalized ischemic stroke patients within 48 hours of onset.
- Included 65 age, gender, and race-matched controls.
- Clinically and radiologically sub-typed strokes; assessed outcomes at 3 months.
Main Results:
- Mean platelet volume (MPV) was significantly higher in ischemic stroke patients compared to controls.
- Elevated MPV was specific to cortical infarction, not lacunar infarcts.
- Higher baseline MPV and lower PC predicted poor functional outcomes (death or dependency) at 3 months.
Conclusions:
- Elevated MPV in acute ischemic stroke persists at 3 months and is linked to cortical infarction.
- Thrombomegaly (high MPV) is a risk factor for poor outcomes after ischemic stroke.
- Platelet volume may serve as a prognostic biomarker in ischemic stroke patients.
