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This study analyzed the peripheral vasoreactivity of patients with acute ischemic stroke and hemiplegia using a modified Raynaud scan, which is a new technology for blood flow measurement. In this retrospective case\u2013control study, we examined patients with unilateral weakness consistent with ischemic lesions who underwent brain magnetic resonance imaging and modified Raynaud scanning within five days from the onset of symptoms. The modified Raynaud scan was used to quantify the radioactivity of the bilateral fingertips during rest and cooling-heating thermal stress conditions and estimate vasoreactivity based on the change in the blood amount per time under rest-thermal stress. The subjects were classified into the preserved and impaired groups based on their degrees of vasomotor reaction. Based on the modified Raynaud scanning, 37 (mean age\u2009=\u200969.1\u2009\u00b1\u200910.6) and 32 (mean age\u2009=\u200962.6\u2009\u00b1\u200911.8) subjects were allocated to the preserved and impaired groups, respectively. Binary logistic regression showed that the affected limb edema (odds ratio (OR) 6.15; confidence interval (CI) 1.40\u201326.97;<jats:italic>p<\/jats:italic>\u2009=\u20090.016) and anterior circulation (OR 3.68;\u00a0CI 1.01\u201313.48;<jats:italic>p<\/jats:italic>\u2009=\u20090.049) were associated with impaired vasoreactivity. The modified Raynaud scans confirmed that central lesions in the anterior circulation with hemiparesis may influence the vasoreactivity of edematous peripheral arteries. These results may inform treatment and rehabilitation for stroke patients with hemiparesis.<\/jats:p>","DOI":"10.1038\/s41598-021-88050-9","type":"journal-article","created":{"date-parts":[[2021,4,20]],"date-time":"2021-04-20T10:35:49Z","timestamp":1618914949000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Peripheral vasoreactivity in acute ischemic stroke with hemiplegia"],"prefix":"10.1038","volume":"11","author":[{"given":"Su Jeong","family":"Wang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chan-Hyuk","family":"Lee","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hyun Goo","family":"Kang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ko Woon","family":"Kim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Minjoo","family":"Kim","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hwan-Jeong","family":"Jeong","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Byoung-Soo","family":"Shin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2021,4,20]]},"reference":[{"key":"88050_CR1","doi-asserted-by":"publisher","first-page":"469","DOI":"10.1038\/nrrheum.2012.96","volume":"8","author":"AL Herrick","year":"2012","unstructured":"Herrick, A. 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