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Stroke Severity in Patients on Non-Vitamin K Antagonist Oral Anticoagulants with a Standard or Insufficient Dose

Authors
 Yo Han Jung  ;  Hye-Yeon Choi  ;  Kyung-Yul Lee  ;  Kyeongyeol Cheon  ;  Sang Won Han  ;  Joong Hyun Park  ;  Han-Jin Cho  ;  Hyung Jong Park  ;  Hyo Suk Nam  ;  Ji Hoe Heo  ;  Hye Sun Lee  ;  Young Dae Kim 
Citation
 Thrombosis and Haemostasis, Vol.118(12) : 2145-2151, 2018 
Journal Title
 Thrombosis and Haemostasis 
ISSN
 0340-6245 
Issue Date
2018
Abstract
BACKGROUND:  The stroke severity or functional outcomes could differ because the efficacy of non-vitamin K antagonist oral anticoagulants (NOACs) could be different according to the dose. We investigated whether there was any difference in the stroke outcomes in patients with non-valvular atrial fibrillation (NVAF) by their prior medication status, including standard-dosed versus under-dosed NOACs. MATERIALS AND METHODS:  We enrolled 858 patients with acute ischaemic stroke with chronic NVAF admitted at six hospitals in Korea. We categorized their prior medication status as follows: (1) no anti-thrombotics (n = 219), (2) only anti-platelet (n = 347), (3) warfarin with a sub-therapeutic intensity (n = 185), (4) warfarin with a therapeutic intensity (n = 37), (5) under-dosed NOAC (n = 27) and (6) standard-dosed NOAC (n = 43). We compared the initial stroke severity between groups. RESULTS:  Among the 858 patients, the patients on standard-dosed NOACs had the lowest initial National Institute of Health Stroke Scale (NIHSS) score, followed by those on warfarin with a therapeutic intensity and those on only anti-platelet (p < 0.05). Multivariate analysis demonstrated that the NIHSS score was significantly low in the patients on warfarin with a therapeutic intensity (B, -5.602; 95% confidence interval [CI], -8.636 to -2.568; p < 0.001) or those on standard-dosed NOACs (B, -3.588; 95% CI, -6.405 to -0.771; p = 0.013), while there was no difference in the NIHSS score between the patients not taking any anti-thrombotics and those on warfarin with a sub-therapeutic intensity or under-dosed NOACs. CONCLUSION:  Use of warfarin with a therapeutic intensity or standard-dosed NOACs was associated with a relatively mild stroke in the patients with NVAF.
Full Text
https://www.thieme-connect.com/products/ejournals/abstract/10.1055/s-0038-1675602
DOI
10.1055/s-0038-1675602
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Neurology (신경과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Yonsei Biomedical Research Center (연세의생명연구원) > 1. Journal Papers
Yonsei Authors
김영대(Kim, Young Dae) ORCID logo https://orcid.org/0000-0001-5750-2616
남효석(Nam, Hyo Suk) ORCID logo https://orcid.org/0000-0002-4415-3995
박형종(Park, Hyungjong)
이경열(Lee, Kyung Yul) ORCID logo https://orcid.org/0000-0001-5585-7739
이혜선(Lee, Hye Sun) ORCID logo https://orcid.org/0000-0001-6328-6948
허지회(Heo, Ji Hoe) ORCID logo https://orcid.org/0000-0001-9898-3321
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URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/166763
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