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- Title
Potential relevance of low-intensity microembolic signals by TCD monitoring.
- Authors
Telman, G.; Sprecher, E.; Kouperberg, E.
- Abstract
The significance of low-intensity microembolic signals (MES), as well as their relationship with high-intensity MES, has not yet been studied. We monitored MES by TCD in 256 arteries of 229 patients with carotid stenosis. All microemboli were detected automatically without a preliminary set threshold. For those 110 patients who evidenced any emboli, the correlation between the number of high- and low-intensity MES was r = 0.50, p < 0.0001. A statistically significant relationship between both types of MES was found, with a degree of association of 0.42, as assessed by Cohen's kappa. Later occurrence of high-intensity MES based on early low-intensity MES was statistically significant, with a chi-square p = 0.0006 and a degree of association of 0.24, as assessed by Cohen's kappa. There is a significant relationship between low- and high-intensity MES, thereby indicating that many MES routinely rejected because of their low intensity are real.
- Subjects
CAROTID artery stenosis; TRANSCRANIAL Doppler ultrasonography; BLOOD coagulation; STATISTICAL correlation; NEUROLOGICAL disorders; NEUROLOGY
- Publication
Neurological Sciences, 2011, Vol 32, Issue 1, p107
- ISSN
1590-1874
- Publication type
Article
- DOI
10.1007/s10072-010-0429-8