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Effectiveness of Adding Antiplatelets to Oral Anticoagulants in Patients with Acute Ischemic Stroke with Atrial Fibrillation and Concomitant Large Artery Steno-Occlusion

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Abstract

We investigated the effectiveness of adding antiplatelet (AP) to oral anticoagulant (OAC) treatment versus OAC treatment alone in patients with AIS with atrial fibrillation (AF) and significant large artery steno-occlusion (LASO). This study is a retrospective analysis of a nationwide, prospective, multicenter stroke registry between April 2008 and November 2017. Patients with acute (within 48 h of onset) and mild-to-moderate (NIHSS score ≤ 15) stroke with AF and concomitant LASO were identified. Antithrombotic regimens at discharge were categorized into OAC alone or OAC + AP. The primary outcome event was a composite of recurrent stroke, myocardial infarction, and all-cause mortality within 3 months of stroke. Among the 2553 patients (age, 73 ± 10 years; men, 50.4%), 78.8% were treated with OAC alone, and 21.2% were treated with OAC + AP. The primary outcome events were significantly more common in the OAC + AP group (6.7%) than the OAC alone group (4.3%) (p = 0.02). Weighted Cox proportional hazard analysis showed that OAC + AP increased the risk of 3-month primary outcome events compared with OAC alone (HR, 1.62 [1.06 to 2.46]). A potential interaction between the type of LASO and discharge antithrombotics was suggested (Pinteraction = 0.04); unlike in patients with complete occlusion (OAC + AP; HR, 2.00 [1.27–3.15]), OAC + AP was comparable with OAC alone for 3-month primary outcome in patients with moderate-to-severe stenosis (HR, 0.54 [0.17–1.70]). In conclusion, OAC + AP might increase the risk of 3-month outcome events compared with OAC alone in patients with AIS with AF and concomitant LASO. However, the effect of additional AP to OAC might differ according to LASO type.

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Data used in this study are available upon reasonable request following submission of a legitimate academic research proposal to be assessed by the CRCS-K steering committee.

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Funding

This was supported by a grant (2017ER620101#) by the Research of Korea Centers for Disease Control and Prevention.

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Correspondence to Joon-Tae Kim or Hee-Joon Bae.

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The authors declare that they have no conflicts of interest.

Disclosures

H.-J.B is involved in the principal investigation, a member of the steering committee, and/or a site investigator of multicenter clinical trials or clinical studies sponsored by Otsuka Korea, Bayer, Boehringer Ingelheim, Handok Pharmaceutical Company, SK Chemicals, Pfizer, ESAI-Korea, Daewoong Pharmaceutical Co. Ltd., Daiichi Sankyo, AstraZeneca Korea, Dong-A Pharmaceutical, Yuhan Corporation, BMS Korea, Korean Drug Co., Ltd., Servier, Shire Korea Ltd., and Shin Poong Pharm. Co. Ltd.; served on the scientific advisory board for Amgen Asia Holding Limited; served as the consultant for Celltrion, Inc. and Korean Drug Co., Ltd.; and received lecture honoraria from Daiichi Sankyo Korea, Otsuka Korea, Esai Korea, Korean Drug Co., Ltd., and Shire Korea Ltd. (modest). PBG serves as a member of the ARRIVE Steering Committee for Bayer (modest).

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The current study was approved by the local institutional review boards at all participating centers, including the Chonnam National University Hospital.

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Kim, JT., Lee, J.S., Kim, B.J. et al. Effectiveness of Adding Antiplatelets to Oral Anticoagulants in Patients with Acute Ischemic Stroke with Atrial Fibrillation and Concomitant Large Artery Steno-Occlusion. Transl. Stroke Res. 11, 1322–1331 (2020). https://doi.org/10.1007/s12975-020-00822-z

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