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Ambulance crews trial finger-prick test that can identify deadly form of stroke
The Guardian
|March 10, 2025
Ambulance crews in Cambridgeshire are piloting the use of finger-prick blood tests to diagnose the deadliest form of stroke, with preliminary data suggesting they may be up to twice as effective as relying on patients' symptoms alone.
The tests, which work on a similar principle to the lateral flow tests (LFTs) used to detect Covid, are designed to rapidly identify whether someone suspected of having a stroke has suffered a large vessel occlusion (LVO), where a blood clot blocks a major artery in the brain.
Although LVOs account for about a third of strokes, they are responsible for 95% of disabilities and deaths. However, a patient's chances of recovery are markedly improved if they undergo a thrombectomy procedure to manually remove the clot within hours of symptom onset.
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The Guardian
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