Can microemboli on transcranial Doppler identify patients at increased stroke risk?
Hugh S Markus
Correspondence Centre for Clinical Neuroscience, St George's University of London, Cranmer Terrace, London SW17 0RE, UK
Email h.markus@sgul.ac.uk
This article has no abstract so we have provided the first paragraph of the full text.
The role of carotid endarterectomy in patients with asymptomatic carotid stenosis remains uncertain. Recently, the ACST collaborators reported a highly significant reduction in stroke or perioperative death with carotid endarterectomy, but the absolute benefit was low—to prevent one disabling or fatal stroke in 5 years, approximately 40 patients would need to be treated.1 Many physicians feel that the risk : benefit ratio is so small that operation for asymptomatic stenosis is not warranted.
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