Two-Year Outcomes of Anticoagulation for Acute Ischemic Stroke With Nonvalvular Atrial Fibrillation ― SAMURAI-NVAF Study

Background:We determined the 2-year long-term risk-benefit profile in patients with stroke or transient ischemic attack (TIA) receiving warfarin or direct oral anticoagulants (DOACs) for nonvalvular atrial fibrillation (NVAF) using a prospective, multicenter, observational registry in Japan.Methods ...

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Veröffentlicht in:Circulation Journal 2018/06/25, Vol.82(7), pp.1935-1942
Hauptverfasser: Yoshimura, Sohei, Koga, Masatoshi, Sato, Shoichiro, Todo, Kenichi, Yamagami, Hiroshi, Kumamoto, Masaya, Itabashi, Ryo, Terasaki, Tadashi, Kimura, Kazumi, Yagita, Yoshiki, Shiokawa, Yoshiaki, Kamiyama, Kenji, Okuda, Satoshi, Okada, Yasushi, Takizawa, Shunya, Hasegawa, Yasuhiro, Kameda, Tomoaki, Shibuya, Satoshi, Nagakane, Yoshinari, Ito, Yasuhiro, Matsuoka, Hideki, Takamatsu, Kazuhiro, Nishiyama, Kazutoshi, Fujita, Kyohei, Kamimura, Teppei, Ando, Daisuke, Ide, Toshihiro, Yoshimoto, Takeshi, Shiozawa, Masayuki, Matsubara, Soichiro, Yamaguchi, Yoshitaka, Kinoshita, Naoto, Matsuki, Takayuki, Takasugi, Junji, Tokunaga, Keisuke, Higashida, Kyoko, Homma, Kazunari, Kario, Kazuomi, Arihiro, Shoji, Toyoda, Kazunori, for the SAMURAI Study Investigators
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container_end_page 1942
container_issue 7
container_start_page 1935
container_title Circulation Journal
container_volume 82
creator Yoshimura, Sohei
Koga, Masatoshi
Sato, Shoichiro
Todo, Kenichi
Yamagami, Hiroshi
Kumamoto, Masaya
Itabashi, Ryo
Terasaki, Tadashi
Kimura, Kazumi
Yagita, Yoshiki
Shiokawa, Yoshiaki
Kamiyama, Kenji
Okuda, Satoshi
Okada, Yasushi
Takizawa, Shunya
Hasegawa, Yasuhiro
Kameda, Tomoaki
Shibuya, Satoshi
Nagakane, Yoshinari
Ito, Yasuhiro
Matsuoka, Hideki
Takamatsu, Kazuhiro
Nishiyama, Kazutoshi
Fujita, Kyohei
Kamimura, Teppei
Ando, Daisuke
Ide, Toshihiro
Yoshimoto, Takeshi
Shiozawa, Masayuki
Matsubara, Soichiro
Yamaguchi, Yoshitaka
Kinoshita, Naoto
Matsuki, Takayuki
Takasugi, Junji
Tokunaga, Keisuke
Higashida, Kyoko
Homma, Kazunari
Kario, Kazuomi
Arihiro, Shoji
Toyoda, Kazunori
for the SAMURAI Study Investigators
description Background:We determined the 2-year long-term risk-benefit profile in patients with stroke or transient ischemic attack (TIA) receiving warfarin or direct oral anticoagulants (DOACs) for nonvalvular atrial fibrillation (NVAF) using a prospective, multicenter, observational registry in Japan.Methods and Results:NVAF patients within 7 days after onset of ischemic stroke/TIA were enrolled in 18 stroke centers. Outcome measures included ischemic and bleeding events and death in the 2-year follow-up period. We enrolled 1,116 patients taking either warfarin (650 patients) or DOACs (466 patients) at acute hospital discharge. DOAC users were younger and had lower National Institutes of Health Stroke Scale, CHADS2and discharge modified Rankin Scale scores than warfarin users (P
doi_str_mv 10.1253/circj.CJ-18-0067
format Article
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Outcome measures included ischemic and bleeding events and death in the 2-year follow-up period. We enrolled 1,116 patients taking either warfarin (650 patients) or DOACs (466 patients) at acute hospital discharge. DOAC users were younger and had lower National Institutes of Health Stroke Scale, CHADS2and discharge modified Rankin Scale scores than warfarin users (P&lt;0.0001 each). Incidences of stroke/systemic embolism (adjusted hazard ratio, 1.07; 95% CI, 0.66–1.72), all ischemic events (1.13; 0.72–1.75), and ischemic stroke/TIA (1.58; 0.95–2.62) were similar between groups. Risks of intracranial hemorrhage (0.32; 0.09–0.97) and death (0.41; 0.26–0.63) were significantly lower for DOAC users. Infection was the leading cause of death, accounting for 40% of deaths among warfarin users.Conclusions:Stroke/TIA patients receiving DOACs for secondary prevention were younger and had lower stroke severity and risk indices than those receiving warfarin. Estimated cumulative incidences of stroke and systemic embolism within 2 years were similar between warfarin and DOACs users, but those of death and intracranial hemorrhage were significantly lower among DOAC users.</description><identifier>ISSN: 1346-9843</identifier><identifier>ISSN: 1347-4820</identifier><identifier>EISSN: 1347-4820</identifier><identifier>DOI: 10.1253/circj.CJ-18-0067</identifier><identifier>PMID: 29863095</identifier><language>eng</language><publisher>Japan: The Japanese Circulation Society</publisher><subject>Acute stroke ; Administration, Oral ; Aged ; Aged, 80 and over ; Anticoagulants - administration &amp; dosage ; Anticoagulants - adverse effects ; Anticoagulants - therapeutic use ; Atrial fibrillation ; Atrial Fibrillation - drug therapy ; Brain Ischemia - chemically induced ; Direct oral anticoagulants ; Female ; Follow-Up Studies ; Humans ; Infections - chemically induced ; Intracranial hemorrhage ; Ischemic Attack, Transient - drug therapy ; Japan ; Male ; Middle Aged ; Prospective Studies ; Registries ; Stroke - drug therapy ; Survival Analysis ; Treatment Outcome ; Warfarin ; Warfarin - adverse effects ; Warfarin - therapeutic use</subject><ispartof>Circulation Journal, 2018/06/25, Vol.82(7), pp.1935-1942</ispartof><rights>2018 THE JAPANESE CIRCULATION SOCIETY</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c494t-4aacc71081cc9f187856cbf5c762c7d5192643884b8e16d2afbdc7bb2511b4b33</citedby><cites>FETCH-LOGICAL-c494t-4aacc71081cc9f187856cbf5c762c7d5192643884b8e16d2afbdc7bb2511b4b33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,1877,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/29863095$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Yoshimura, Sohei</creatorcontrib><creatorcontrib>Koga, Masatoshi</creatorcontrib><creatorcontrib>Sato, Shoichiro</creatorcontrib><creatorcontrib>Todo, Kenichi</creatorcontrib><creatorcontrib>Yamagami, Hiroshi</creatorcontrib><creatorcontrib>Kumamoto, Masaya</creatorcontrib><creatorcontrib>Itabashi, Ryo</creatorcontrib><creatorcontrib>Terasaki, Tadashi</creatorcontrib><creatorcontrib>Kimura, Kazumi</creatorcontrib><creatorcontrib>Yagita, Yoshiki</creatorcontrib><creatorcontrib>Shiokawa, Yoshiaki</creatorcontrib><creatorcontrib>Kamiyama, Kenji</creatorcontrib><creatorcontrib>Okuda, Satoshi</creatorcontrib><creatorcontrib>Okada, Yasushi</creatorcontrib><creatorcontrib>Takizawa, Shunya</creatorcontrib><creatorcontrib>Hasegawa, Yasuhiro</creatorcontrib><creatorcontrib>Kameda, Tomoaki</creatorcontrib><creatorcontrib>Shibuya, Satoshi</creatorcontrib><creatorcontrib>Nagakane, Yoshinari</creatorcontrib><creatorcontrib>Ito, Yasuhiro</creatorcontrib><creatorcontrib>Matsuoka, Hideki</creatorcontrib><creatorcontrib>Takamatsu, Kazuhiro</creatorcontrib><creatorcontrib>Nishiyama, Kazutoshi</creatorcontrib><creatorcontrib>Fujita, Kyohei</creatorcontrib><creatorcontrib>Kamimura, Teppei</creatorcontrib><creatorcontrib>Ando, Daisuke</creatorcontrib><creatorcontrib>Ide, Toshihiro</creatorcontrib><creatorcontrib>Yoshimoto, Takeshi</creatorcontrib><creatorcontrib>Shiozawa, Masayuki</creatorcontrib><creatorcontrib>Matsubara, Soichiro</creatorcontrib><creatorcontrib>Yamaguchi, Yoshitaka</creatorcontrib><creatorcontrib>Kinoshita, Naoto</creatorcontrib><creatorcontrib>Matsuki, Takayuki</creatorcontrib><creatorcontrib>Takasugi, Junji</creatorcontrib><creatorcontrib>Tokunaga, Keisuke</creatorcontrib><creatorcontrib>Higashida, Kyoko</creatorcontrib><creatorcontrib>Homma, Kazunari</creatorcontrib><creatorcontrib>Kario, Kazuomi</creatorcontrib><creatorcontrib>Arihiro, Shoji</creatorcontrib><creatorcontrib>Toyoda, Kazunori</creatorcontrib><creatorcontrib>for the SAMURAI Study Investigators</creatorcontrib><creatorcontrib>SAMURAI Study Investigators</creatorcontrib><creatorcontrib>for the SAMURAI Study Investigators</creatorcontrib><title>Two-Year Outcomes of Anticoagulation for Acute Ischemic Stroke With Nonvalvular Atrial Fibrillation ― SAMURAI-NVAF Study</title><title>Circulation Journal</title><addtitle>Circ J</addtitle><description>Background:We determined the 2-year long-term risk-benefit profile in patients with stroke or transient ischemic attack (TIA) receiving warfarin or direct oral anticoagulants (DOACs) for nonvalvular atrial fibrillation (NVAF) using a prospective, multicenter, observational registry in Japan.Methods and Results:NVAF patients within 7 days after onset of ischemic stroke/TIA were enrolled in 18 stroke centers. Outcome measures included ischemic and bleeding events and death in the 2-year follow-up period. We enrolled 1,116 patients taking either warfarin (650 patients) or DOACs (466 patients) at acute hospital discharge. DOAC users were younger and had lower National Institutes of Health Stroke Scale, CHADS2and discharge modified Rankin Scale scores than warfarin users (P&lt;0.0001 each). Incidences of stroke/systemic embolism (adjusted hazard ratio, 1.07; 95% CI, 0.66–1.72), all ischemic events (1.13; 0.72–1.75), and ischemic stroke/TIA (1.58; 0.95–2.62) were similar between groups. Risks of intracranial hemorrhage (0.32; 0.09–0.97) and death (0.41; 0.26–0.63) were significantly lower for DOAC users. Infection was the leading cause of death, accounting for 40% of deaths among warfarin users.Conclusions:Stroke/TIA patients receiving DOACs for secondary prevention were younger and had lower stroke severity and risk indices than those receiving warfarin. Estimated cumulative incidences of stroke and systemic embolism within 2 years were similar between warfarin and DOACs users, but those of death and intracranial hemorrhage were significantly lower among DOAC users.</description><subject>Acute stroke</subject><subject>Administration, Oral</subject><subject>Aged</subject><subject>Aged, 80 and over</subject><subject>Anticoagulants - administration &amp; dosage</subject><subject>Anticoagulants - adverse effects</subject><subject>Anticoagulants - therapeutic use</subject><subject>Atrial fibrillation</subject><subject>Atrial Fibrillation - drug therapy</subject><subject>Brain Ischemia - chemically induced</subject><subject>Direct oral anticoagulants</subject><subject>Female</subject><subject>Follow-Up Studies</subject><subject>Humans</subject><subject>Infections - chemically induced</subject><subject>Intracranial hemorrhage</subject><subject>Ischemic Attack, Transient - drug therapy</subject><subject>Japan</subject><subject>Male</subject><subject>Middle Aged</subject><subject>Prospective Studies</subject><subject>Registries</subject><subject>Stroke - drug therapy</subject><subject>Survival Analysis</subject><subject>Treatment Outcome</subject><subject>Warfarin</subject><subject>Warfarin - adverse effects</subject><subject>Warfarin - therapeutic use</subject><issn>1346-9843</issn><issn>1347-4820</issn><issn>1347-4820</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpFkMtu1DAUhi1ERUthzwp5ycbFtyT2MhoxdKrSSr2AWFm243Q8JHGxnVaVWMxL8ILwImQ6Q7s55yy-_9fRB8A7go8ILdhH66NdHc1OEBEI47J6AQ4I4xXiguKXj3eJpOBsH7xOaYUxlbiQr8A-laJkWBYH4NfVfUDfnY7wfMw29C7B0MJ6yN4GfTN2OvswwDZEWNsxO7hIdul6b-FljuGHg998XsKzMNzp7m6iJyxHrzs49yb6bhv_u17_Wf-Gl_WX64t6gc6-1vMpPjYPb8Beq7vk3u72Ibief7qaHaPT88-LWX2KLJc8I661tRXBglgrWyIqUZTWtIWtSmqrpiCSlpwJwY1wpGyobk1jK2NoQYjhhrFD8GHbexvDz9GlrHqfrJveG1wYk6KYS8koLcWE4i1qY0gpulbdRt_r-KAIVhvn6tG5mp0oItTG-RR5v2sfTe-ap8B_yRMw3wKrlPWNewJ0nCx3btcoqKo247n5GVjqqNzA_gG_0pna</recordid><startdate>20180625</startdate><enddate>20180625</enddate><creator>Yoshimura, Sohei</creator><creator>Koga, Masatoshi</creator><creator>Sato, Shoichiro</creator><creator>Todo, Kenichi</creator><creator>Yamagami, Hiroshi</creator><creator>Kumamoto, Masaya</creator><creator>Itabashi, Ryo</creator><creator>Terasaki, Tadashi</creator><creator>Kimura, Kazumi</creator><creator>Yagita, Yoshiki</creator><creator>Shiokawa, Yoshiaki</creator><creator>Kamiyama, Kenji</creator><creator>Okuda, Satoshi</creator><creator>Okada, Yasushi</creator><creator>Takizawa, Shunya</creator><creator>Hasegawa, Yasuhiro</creator><creator>Kameda, Tomoaki</creator><creator>Shibuya, Satoshi</creator><creator>Nagakane, Yoshinari</creator><creator>Ito, Yasuhiro</creator><creator>Matsuoka, Hideki</creator><creator>Takamatsu, Kazuhiro</creator><creator>Nishiyama, Kazutoshi</creator><creator>Fujita, Kyohei</creator><creator>Kamimura, Teppei</creator><creator>Ando, Daisuke</creator><creator>Ide, Toshihiro</creator><creator>Yoshimoto, Takeshi</creator><creator>Shiozawa, Masayuki</creator><creator>Matsubara, Soichiro</creator><creator>Yamaguchi, Yoshitaka</creator><creator>Kinoshita, Naoto</creator><creator>Matsuki, Takayuki</creator><creator>Takasugi, Junji</creator><creator>Tokunaga, Keisuke</creator><creator>Higashida, Kyoko</creator><creator>Homma, Kazunari</creator><creator>Kario, Kazuomi</creator><creator>Arihiro, Shoji</creator><creator>Toyoda, Kazunori</creator><creator>for the SAMURAI Study Investigators</creator><general>The Japanese Circulation Society</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20180625</creationdate><title>Two-Year Outcomes of Anticoagulation for Acute Ischemic Stroke With Nonvalvular Atrial Fibrillation ― SAMURAI-NVAF Study</title><author>Yoshimura, Sohei ; Koga, Masatoshi ; Sato, Shoichiro ; Todo, Kenichi ; Yamagami, Hiroshi ; Kumamoto, Masaya ; Itabashi, Ryo ; Terasaki, Tadashi ; Kimura, Kazumi ; Yagita, Yoshiki ; Shiokawa, Yoshiaki ; Kamiyama, Kenji ; Okuda, Satoshi ; Okada, Yasushi ; Takizawa, Shunya ; Hasegawa, Yasuhiro ; Kameda, Tomoaki ; Shibuya, Satoshi ; Nagakane, Yoshinari ; Ito, Yasuhiro ; Matsuoka, Hideki ; Takamatsu, Kazuhiro ; Nishiyama, Kazutoshi ; Fujita, Kyohei ; Kamimura, Teppei ; Ando, Daisuke ; Ide, Toshihiro ; Yoshimoto, Takeshi ; Shiozawa, Masayuki ; Matsubara, Soichiro ; Yamaguchi, Yoshitaka ; Kinoshita, Naoto ; Matsuki, Takayuki ; Takasugi, Junji ; Tokunaga, Keisuke ; Higashida, Kyoko ; Homma, Kazunari ; Kario, Kazuomi ; Arihiro, Shoji ; Toyoda, Kazunori ; for the SAMURAI Study Investigators</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c494t-4aacc71081cc9f187856cbf5c762c7d5192643884b8e16d2afbdc7bb2511b4b33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Acute stroke</topic><topic>Administration, Oral</topic><topic>Aged</topic><topic>Aged, 80 and over</topic><topic>Anticoagulants - administration &amp; dosage</topic><topic>Anticoagulants - adverse effects</topic><topic>Anticoagulants - therapeutic use</topic><topic>Atrial fibrillation</topic><topic>Atrial Fibrillation - drug therapy</topic><topic>Brain Ischemia - chemically induced</topic><topic>Direct oral anticoagulants</topic><topic>Female</topic><topic>Follow-Up Studies</topic><topic>Humans</topic><topic>Infections - chemically induced</topic><topic>Intracranial hemorrhage</topic><topic>Ischemic Attack, Transient - drug therapy</topic><topic>Japan</topic><topic>Male</topic><topic>Middle Aged</topic><topic>Prospective Studies</topic><topic>Registries</topic><topic>Stroke - drug therapy</topic><topic>Survival Analysis</topic><topic>Treatment Outcome</topic><topic>Warfarin</topic><topic>Warfarin - adverse effects</topic><topic>Warfarin - therapeutic use</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yoshimura, Sohei</creatorcontrib><creatorcontrib>Koga, Masatoshi</creatorcontrib><creatorcontrib>Sato, Shoichiro</creatorcontrib><creatorcontrib>Todo, Kenichi</creatorcontrib><creatorcontrib>Yamagami, Hiroshi</creatorcontrib><creatorcontrib>Kumamoto, Masaya</creatorcontrib><creatorcontrib>Itabashi, Ryo</creatorcontrib><creatorcontrib>Terasaki, Tadashi</creatorcontrib><creatorcontrib>Kimura, Kazumi</creatorcontrib><creatorcontrib>Yagita, Yoshiki</creatorcontrib><creatorcontrib>Shiokawa, Yoshiaki</creatorcontrib><creatorcontrib>Kamiyama, Kenji</creatorcontrib><creatorcontrib>Okuda, Satoshi</creatorcontrib><creatorcontrib>Okada, Yasushi</creatorcontrib><creatorcontrib>Takizawa, Shunya</creatorcontrib><creatorcontrib>Hasegawa, Yasuhiro</creatorcontrib><creatorcontrib>Kameda, Tomoaki</creatorcontrib><creatorcontrib>Shibuya, Satoshi</creatorcontrib><creatorcontrib>Nagakane, Yoshinari</creatorcontrib><creatorcontrib>Ito, Yasuhiro</creatorcontrib><creatorcontrib>Matsuoka, Hideki</creatorcontrib><creatorcontrib>Takamatsu, Kazuhiro</creatorcontrib><creatorcontrib>Nishiyama, Kazutoshi</creatorcontrib><creatorcontrib>Fujita, Kyohei</creatorcontrib><creatorcontrib>Kamimura, Teppei</creatorcontrib><creatorcontrib>Ando, Daisuke</creatorcontrib><creatorcontrib>Ide, Toshihiro</creatorcontrib><creatorcontrib>Yoshimoto, Takeshi</creatorcontrib><creatorcontrib>Shiozawa, Masayuki</creatorcontrib><creatorcontrib>Matsubara, Soichiro</creatorcontrib><creatorcontrib>Yamaguchi, Yoshitaka</creatorcontrib><creatorcontrib>Kinoshita, Naoto</creatorcontrib><creatorcontrib>Matsuki, Takayuki</creatorcontrib><creatorcontrib>Takasugi, Junji</creatorcontrib><creatorcontrib>Tokunaga, Keisuke</creatorcontrib><creatorcontrib>Higashida, Kyoko</creatorcontrib><creatorcontrib>Homma, Kazunari</creatorcontrib><creatorcontrib>Kario, Kazuomi</creatorcontrib><creatorcontrib>Arihiro, Shoji</creatorcontrib><creatorcontrib>Toyoda, Kazunori</creatorcontrib><creatorcontrib>for the SAMURAI Study Investigators</creatorcontrib><creatorcontrib>SAMURAI Study Investigators</creatorcontrib><creatorcontrib>for the SAMURAI Study Investigators</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Circulation Journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yoshimura, Sohei</au><au>Koga, Masatoshi</au><au>Sato, Shoichiro</au><au>Todo, Kenichi</au><au>Yamagami, Hiroshi</au><au>Kumamoto, Masaya</au><au>Itabashi, Ryo</au><au>Terasaki, Tadashi</au><au>Kimura, Kazumi</au><au>Yagita, Yoshiki</au><au>Shiokawa, Yoshiaki</au><au>Kamiyama, Kenji</au><au>Okuda, Satoshi</au><au>Okada, Yasushi</au><au>Takizawa, Shunya</au><au>Hasegawa, Yasuhiro</au><au>Kameda, Tomoaki</au><au>Shibuya, Satoshi</au><au>Nagakane, Yoshinari</au><au>Ito, Yasuhiro</au><au>Matsuoka, Hideki</au><au>Takamatsu, Kazuhiro</au><au>Nishiyama, Kazutoshi</au><au>Fujita, Kyohei</au><au>Kamimura, Teppei</au><au>Ando, Daisuke</au><au>Ide, Toshihiro</au><au>Yoshimoto, Takeshi</au><au>Shiozawa, Masayuki</au><au>Matsubara, Soichiro</au><au>Yamaguchi, Yoshitaka</au><au>Kinoshita, Naoto</au><au>Matsuki, Takayuki</au><au>Takasugi, Junji</au><au>Tokunaga, Keisuke</au><au>Higashida, Kyoko</au><au>Homma, Kazunari</au><au>Kario, Kazuomi</au><au>Arihiro, Shoji</au><au>Toyoda, Kazunori</au><au>for the SAMURAI Study Investigators</au><aucorp>SAMURAI Study Investigators</aucorp><aucorp>for the SAMURAI Study Investigators</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Two-Year Outcomes of Anticoagulation for Acute Ischemic Stroke With Nonvalvular Atrial Fibrillation ― SAMURAI-NVAF Study</atitle><jtitle>Circulation Journal</jtitle><addtitle>Circ J</addtitle><date>2018-06-25</date><risdate>2018</risdate><volume>82</volume><issue>7</issue><spage>1935</spage><epage>1942</epage><pages>1935-1942</pages><issn>1346-9843</issn><issn>1347-4820</issn><eissn>1347-4820</eissn><abstract>Background:We determined the 2-year long-term risk-benefit profile in patients with stroke or transient ischemic attack (TIA) receiving warfarin or direct oral anticoagulants (DOACs) for nonvalvular atrial fibrillation (NVAF) using a prospective, multicenter, observational registry in Japan.Methods and Results:NVAF patients within 7 days after onset of ischemic stroke/TIA were enrolled in 18 stroke centers. Outcome measures included ischemic and bleeding events and death in the 2-year follow-up period. We enrolled 1,116 patients taking either warfarin (650 patients) or DOACs (466 patients) at acute hospital discharge. DOAC users were younger and had lower National Institutes of Health Stroke Scale, CHADS2and discharge modified Rankin Scale scores than warfarin users (P&lt;0.0001 each). Incidences of stroke/systemic embolism (adjusted hazard ratio, 1.07; 95% CI, 0.66–1.72), all ischemic events (1.13; 0.72–1.75), and ischemic stroke/TIA (1.58; 0.95–2.62) were similar between groups. Risks of intracranial hemorrhage (0.32; 0.09–0.97) and death (0.41; 0.26–0.63) were significantly lower for DOAC users. Infection was the leading cause of death, accounting for 40% of deaths among warfarin users.Conclusions:Stroke/TIA patients receiving DOACs for secondary prevention were younger and had lower stroke severity and risk indices than those receiving warfarin. Estimated cumulative incidences of stroke and systemic embolism within 2 years were similar between warfarin and DOACs users, but those of death and intracranial hemorrhage were significantly lower among DOAC users.</abstract><cop>Japan</cop><pub>The Japanese Circulation Society</pub><pmid>29863095</pmid><doi>10.1253/circj.CJ-18-0067</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record>
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subjects Acute stroke
Administration, Oral
Aged
Aged, 80 and over
Anticoagulants - administration & dosage
Anticoagulants - adverse effects
Anticoagulants - therapeutic use
Atrial fibrillation
Atrial Fibrillation - drug therapy
Brain Ischemia - chemically induced
Direct oral anticoagulants
Female
Follow-Up Studies
Humans
Infections - chemically induced
Intracranial hemorrhage
Ischemic Attack, Transient - drug therapy
Japan
Male
Middle Aged
Prospective Studies
Registries
Stroke - drug therapy
Survival Analysis
Treatment Outcome
Warfarin
Warfarin - adverse effects
Warfarin - therapeutic use
title Two-Year Outcomes of Anticoagulation for Acute Ischemic Stroke With Nonvalvular Atrial Fibrillation ― SAMURAI-NVAF Study
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