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Management of a wake-up stroke

Xuya Huang1, Vafa Alakbarzade2,3, Nader Khandanpour2

  • 1Department of Neurology, St. George's University Hospitals NHS Foundation Trust, London, UK xuya.huang@nhs.net.

Practical Neurology
|March 16, 2019
PubMed

Current national guidelines advocate intravenous thrombolysis to treat patients with acute ischaemic stroke presenting within 4.5 hours from symptom onset, and thrombectomy for patients with anterior circulation ischaemic stroke from large vessel occlusion presenting within 6 hours from onset. However, a substantial group of patients presents with acute ischaemic stroke beyond these time windows or has an unknown time of onset. Recent studies are set to revolutionise treatment for these patients. Using MRI diffusion/FLAIR (fluid-attenuated inversion recovery) mismatch, it is possible to identify patients within 4.5 hours from onset and safely deliver thrombolysis. Using CT perfusion imaging, it is possible to identify subjects with a middle cerebral artery syndrome who have an extensive area of ischaemic brain but as yet have only a small area of infarction who may benefit from urgent thrombectomy in up to 24 hours. Here, we highlight the recent advances in late window stroke treatment and their potential contribution to clinical practice.

Keywords:
CT perfusionDWI-FLAIR mismatchstroke with unknown time of onsetthrombectomythrombolysiswake up stroke

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