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Updated: Mar 26, 2026

A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia
Published on: August 18, 2015
Recurrent Stroke with Rapid Development of Intracranial Stenoses in Polycythemia Vera
Ane M Crespo1, Laura Abraira1, Nicolau Guanyabens1
1Department of Neuroscience, Stroke Unit, Hospital Universitario Germans Trias i Pujol, Badalona, Barcelona, Spain.
Abstract:
Polycythemia vera (PV) is a blood disorder in which the first expression may be an ischemic stroke. Stroke mechanism in PV is usually attributed to a hypercoagulability state and blood stasis. We report a case of a patient with PV presenting with recurrent ischemic stroke associated with the development of large intracranial stenosis in a period of 1 month. Stenosis was associated with microembolic signals detected by transcranial Doppler. One year later and after hematocrit control, stenosis persisted but microembolic signals disappeared. We discuss similar reports in the literature and the possible pathophysiological mechanism of large-vessel damage in these patients.
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