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01-02-2018 | Original Article

Lymphocyte-to-monocyte ratio on day 7 is associated with outcomes in acute ischemic stroke

Authors: Min-Gyu Park, Min-Kyeung Kim, Song-Hwa Chae, Hyung-Keun Kim, Junhee Han, Kyung-Pil Park

Published in: Neurological Sciences | Issue 2/2018

Abstract

The main features of stroke-induced immunosuppression are lymphopenia and deactivation of monocytes in peripheral blood. We hypothesized that lymphocyte-to-monocyte ratio (LMR) in peripheral blood may represent the degree of stroke-induced immunosuppression. To prove this hypothesis, we evaluated whether LMR is associated with risk of post-stroke infection and clinical outcome at 3 months in patients with acute ischemic stroke. We selected patients with stroke in anterior circulation within 24 h from onset. Peripheral blood sampling for differential blood count was performed on days 1 and 7. The LMRs on days 1 and 7 were analyzed to determine associations with excellent outcomes (modified Rankin Scale of score 0–1 at 3 months). One hundred and two patients were included. The initial National Institutes of Health Stroke Scale score (adjusted odd ratio [OR] 0.89; 95% confidence interval [CI], 0.83–0.95; P = 0.001) and LMR on day 7 (adjusted OR 1.49; 95% CI, 1.09–2.02; P = 0.011) were associated with excellent outcomes. LMRs on day 1 were significantly lower in stroke patients with pneumonia (P = 0.007) and pneumonia or urinary tract infection (P = 0.012) than those without infections. LMRs on day 7 were also significantly lower in stroke patients with infection (P = 0.005 in pneumonia, P = 0.003 in urinary tract infection, and P < 0.001 in pneumonia or urinary tract infection) than those without infections. Lower LMRs on day 7 are associated with worse outcomes at 3 months after stroke onset. LMR may be a useful marker for assessing the stroke-induced immunosuppression.

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Title: Lymphocyte-to-monocyte ratio on day 7 is associated with outcomes in acute ischemic stroke
Authors: Min-Gyu Park
Min-Kyeung Kim
Song-Hwa Chae
Hyung-Keun Kim
Junhee Han
Kyung-Pil Park
Publication date: 01-02-2018
Publisher: Springer Milan
Published in: Neurological Sciences / Issue 2/2018
Print ISSN: 1590-1874
Electronic ISSN: 1590-3478
DOI: https://doi.org/10.1007/s10072-017-3163-7

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Lymphocyte-to-monocyte ratio on day 7 is associated with outcomes in acute ischemic stroke

Abstract

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Abstract

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