Two‐layered susceptibility vessel sign is associated with biochemically quantified thrombus red blood cell content. (3rd May 2020)

• Record Type: Journal Article
• Authors: Di Meglio, L.; Derraz, I.; Solonomenjanahary, M.; Daly, D.; Chodraui Filho, S.; Ben Maacha, M.; Labreuche, J.; Desal, H.; Consoli, A.; Lapergue, B.; Blanc, R.; Piotin, M.; Mazighi, M.; Ho‐Tin‐Noé, B.; Desilles, J. P.; Bourcier, R.
• Other Names: Redjem Hocine investigator.; Smajda Stanislas investigator.; Ciccio Gabriele investigator.; Fahed Robert investigator.; Escalard Simon investigator.; Hamdani Mylene investigator.; Sabben Candice investigator.; Obadia Michael investigator.; Deschildre Catherine investigator.; Hebert Solène investigator.; Rodesch Georges investigator.; Di Maria Federico investigator.; Coskun Okuzan investigator.; Lopez Delphine investigator.; Detraz Lili investigator.; Roy Monica investigator.; Clavier Delphine investigator.; Marnat Gaultier investigator.; Gariel Florent investigator.; Lucas Ludovic investigator.; Sibon Igor investigator.; Eugene Francois investigator.; Vannier Stéphane investigator.; Ferre Jean‐Christophe investigator.; LeBras Anthony investigator.; Raoult Hélène investigator.; Paya Christophe investigator.; Gauvrit Jean‐Yves investigator.; Richard Sébastien investigator.; Gory Benjamin investigator.; Delvoye François investigator.; Maier Benjamin investigator.;
• Is Part Of: European journal of neurology. Volume 27:Number 7(2020)
• Page Start: 1264
• Page End: 1271
• Publication Date: 2020-05-03
• Subjects: acute stroke -- endovascular treatment -- predictors; Neurology -- Periodicals; Nervous system -- Diseases -- Periodicals; 616.8
• DOI: 10.1111/ene.14241
• Languages: English
• ISSNs: 1351-5101

Abstract

Abstract : Background and purpose: Better characterization of the thrombus could be useful to determine acute ischaemic stroke (AIS) aetiology and predict response to thrombolysis and endovascular therapy (EVT). To test the hypothesis that susceptibility vessel sign (SVS) on baseline magnetic resonance imaging (MRI) is related to red blood cell (RBC) content of AIS thrombi, the total haemoglobin contents (HbCs) of AIS thrombi retrieved by EVT from patients with or without SVS or two‐layered SVS (TLSVS) were compared. Methods: Baseline MRI of 84 anterior AIS patients was reviewed by neuro‐radiologists blinded to clinical and biochemical data. Thrombi from these patients were retrieved by EVT and analysed for HbC by quantitative enzyme‐linked immunosorbent assay and measurement of haem concentration. Results: Susceptibility vessel sign and TLSVS were respectively observed in 85.7% and 50.0% of cases. The median HbC content was 253 µg/mg thrombus (interquartile range 177–333) and the median haem content was 219 µg/mg thrombus (131–264). Thrombus HbC and haem content were highly correlated with thrombus RBC content determined by flow cytometry ( r = 0.94). Thrombi from patients with TLSVS weighed more [31.1 (16.5–68.3) mg vs. 17.7 (11.7–33.3) mg; P = 0.005] and had a higher HbC content [278 (221–331) µg/mg vs. 196 (139–301) µg/mg; P = 0.010] compared to thrombi from patients without TLSVS. There was no difference in thrombus weight or HbC content according to SVS status. Conclusions: Our study shows that TLSVS is significantly associated with a higher thrombus weight and RBC content, as determined by quantitative assays.