Microembolic signals (MES) are detected by transcranial Doppler (TCD), and are mainly observed in cardiac and large-artery diseases; however they might also be observed in conditions affecting small vessels of the brain. We aimed to review the current medical literature related to MES assessed by TCD in patients with cerebral small vessel disease. We conducted a systematic review in PubMed and selected the articles with information on this topic. Systemic lupus erythematosus (SLE) is the disease with more articles; pooled data showed a frequency of MES of 14.9%. MES were more frequent in SLE patients with antiphospholipid antibodies and ischemic stroke. MES have also been described in other diseases such as primary antiphospholipid syndrome, Sneddon's syndrome, and Behçet's disease. Further studies assessing the significance of MES in the pathogenesis of neurological manifestations of these disorders is warranted.
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http://dx.doi.org/10.1007/s00415-009-5421-y | DOI Listing |
Eur J Neurol
January 2025
Second Department of Neurology, School of Medicine, "Attikon" University Hospital, National and Kapodistrian University of Athens, Athens, Greece.
Background: Microembolic signals (MES) can be detected using transcranial Doppler (TCD) ultrasound in several clinical scenarios, including acute ischemic stroke (AIS). This narrative review aims to provide insights into their role in AIS patient management and outcomes.
Methods: The present narrative review consolidates current observational and randomized evidence on the prevalence and clinical relevance of MES in different AIS subtypes and settings.
Eur J Vasc Endovasc Surg
November 2024
Institution of Clinical Sciences, Department of Neurosciences, Umeå University, Umeå, Sweden; Institute of Neuroscience and Physiology, Department of Clinical Neuroscience, Sahlgrenska Academy, Gothenburg, Sweden; Wallenberg Centre of Molecular Medicine, Umeå University, Umeå, Sweden.
Allergol Immunopathol (Madr)
November 2024
Department of ICU, Wuhan Wuchang Hospital, Wuhan, China;
In coronary microembolization, inflammatory cell infiltration, patchy necrosis, and extensive intra-myocardial hemorrhage are dominant, which induce myocardial dysfunction with clinical symptoms of chronic ischemic cardiomyopathy. Microembolization can lead to obstruction of the coronary microvessels and result in the micro-infarction of the heart. The inflammation and elevated expression of the tumor necrosis factor in cardiomyocytes and the activation of extracellular ERK are involved in initiating the inflammatory response mechanism.
View Article and Find Full Text PDFAging (Albany NY)
October 2024
Department of Cardiology, Chongyi People’s Hospital, Ganzhou 341399, Jiangxi Province, China.
Methodist Debakey Cardiovasc J
September 2024
Houston Methodist, Houston, Texas, US.
Fat emboli may occur in patients after traumatic fractures or orthopedic procedures; however, their clinical detection is a very rare finding. Here, we describe a 77-year-old female who was admitted to the emergency department with a fracture of the right humerus. We diagnosed fat embolism after an ultrasound of the right subclavian vein.
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