著者

Furukawa Koji Abumiya Takeo Sakai Keiji Hirano Miki Osanai Toshiya Shichinohe Hideo Nakayama Naoki Kazumata Ken Hida Kazutoshi Houkin Kiyohiro

出版者

Elsevier

雑誌

Journal of Stroke and Cerebrovascular Diseases (ISSN:10523057)

巻号頁・発行日

vol.25, no.11, pp.2762-2769, 2016-11

被引用文献数

52

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Background and Purpose: High blood viscosity causes blood stagnation and subsequent pathological thrombotic events, resulting in the development of ischemic stroke. We hypothesize that the contribution of blood viscosity may differ among ischemic stroke subtypes based on specific pathological conditions. We tried to verify this hypothesis by measuring blood viscosity in acute ischemic stroke patients using a newly developed electromagnetic spinning sphere (EMS) viscometer. Methods: Measurements in acute ischemic stroke patients were performed 4 times during admission and data were compared with those obtained from 100 healthy outpatient volunteers. Results: We enrolled 92 patients (cardioembolism [CE]: 25, large-artery atherosclerosis [LAA]: 42, and small artery occlusion [SAO]: 25) in this study. Comparisons of blood viscosity between the ischemic stroke subgroups and control group revealed that blood viscosity at the date of admission was significantly higher in the SAO group (5.37±1.11 mPa・s) than in the control group (4.66±0.72 mPa・s) (p<0.01). Among all subtype groups showing a reduction in blood viscosity after 2 weeks, the SAO group showed the highest and most significant reduction, indicating that SAO patients had the most concentrated blood at the onset. Conclusions: Blood viscosity was significantly increased in the SAO group at the date of admission, which indicated the contribution of dehydration to the onset of ischemic stroke. The importance of dehydration needs to be emphasized more in the pathogenesis of SAO. The clinical application of the EMS viscometer is promising for understanding and differentiating the pathogenesis of ischemic stroke.