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Acute ischaemic stroke: part II. The vertebrobasilar circulation
1Department of Critical Care Medicine, Flinders Medical Centre, Adelaide, South Australia.
Summary
Recent advances in acute ischaemic stroke management include aspirin and specialized stroke unit care. Advanced imaging and reperfusion therapies like thrombolytics and angioplasty show promise in selected vertebrobasilar cases.
Area of Science:
- Neurology
- Vascular Medicine
Background:
- Acute ischaemic stroke, particularly in the vertebrobasilar circulation, poses significant diagnostic and therapeutic challenges.
- Early differentiation from hemorrhagic stroke is crucial for appropriate management.
Purpose of the Study:
- To review recent advancements in managing acute ischaemic stroke.
- To highlight effective diagnostic and therapeutic strategies for vertebrobasilar circulation strokes.
Main Methods:
- Literature review of English-language studies on acute ischaemic stroke from 1990-2000 via MEDLINE search.
- Analysis of diagnostic imaging techniques and therapeutic interventions.
Main Results:
- Cerebral magnetic resonance imaging (MRI) with MR angiography offers superior accuracy in identifying vertebrobasilar ischaemic lesions compared to computed tomography (CT).
- Aspirin (150-300 mg) and specialized acute stroke unit care significantly reduce morbidity and mortality.
- While general neuroprotective agents have shown limited success, selected cases benefit from intravenous/intra-arterial thrombolytics, angioplasty, or stents to restore cerebral blood flow.
Conclusions:
- Acute ischaemic stroke in the vertebrobasilar system necessitates aspirin (150-300 mg daily) and acute stroke unit management.
- Reperfusion therapies, including intra-arterial/intravenous thrombolysis and angioplasty/stenting, demonstrate potential benefits in selected patients, even up to 24 hours post-event.
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