Microembolic Signals and Early Recurrent Cerebral Ischemia in Carotid Artery Disease

To the Editor: Valton et al1 in the October 1998 issue of Stroke report on finding early recurrence of cerebral ischemia in patients showing presence of microembolic signals (MES) as detected by Doppler sonography. Of considerable interest to us is their finding the association significant in cases of stroke or transient ischemic attack of presumed arterial origin. Our research supports similar conclusions, though our study was more restricted. Where Valton et al examined a more heterogeneous group of patients, we have been investigating the relationship between MES and early recurrence of cerebral ischemia in a particular group of patients, those with varying degrees …