KMID : 0191120230380380294
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Journal of Korean Medical Science 2023 Volume.38 No. 38 p.294 ~ p.294
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Multiple Antiplatelet Therapy in Ischemic Stroke Already on Antiplatelet Agents Based on the Linked Big Data for Stroke
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Kim Tae-Jung
Lee Ji-Sung Yoon Jae-Sun Park Soo-Hyun Oh Mi-Sun Jung Keun-Hwa Yu Kyung-Ho Lee Byung-Chul Ko Sang-Bae Yoon Byung-Woo
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Abstract
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Background : Optimal antiplatelet strategy for patients with ischemic stroke who were already on single antiplatelet therapy (SAPT) remains to be elucidated. This study aimed to evaluate the effect of different antiplatelet regimens on vascular and safety outcomes at 1 year after non-cardioembolic stroke in patients previously on SAPT.
Methods : We identified 9,284 patients with acute non-cardioembolic ischemic stroke that occurred on SAPT using linked data. Patients were categorized into three groups according to antiplatelet strategy at discharge: 1) SAPT; 2) dual antiplatelet therapy (DAPT); and 3) triple antiplatelet therapy (TAPT). One-year outcomes included recurrent ischemic stroke, composite outcomes (recurrent ischemic stroke, myocardial infarction, intracerebral hemorrhage, and death), and major bleeding.
Results : Of 9,284 patients, 5,565 (59.9%) maintained SAPT, 3,638 (39.2%) were treated with DAPT, and 81 (0.9%) were treated with TAPT. Multiple antiplatelet therapy did not reduce the risks of 1-year recurrent stroke (DAPT, hazard ratio [HR], 1.08, 95% confidence interval [CI], 0.92?1.27, P = 0.339; TAPT, HR, 0.71, 95% CI, 0.27?1.91, P = 0.500) and 1-year composite outcome (DAPT, HR, 1.09, 95% CI, 0.68?1.97, P = 0.592; TAPT, HR, 1.46, 95% CI, 0.68?1.97, P = 0.592). However, the TAPT groups showed an increased risk of major bleeding complications (DAPT, HR, 1.23, 95% CI, 0.89?1.71, P = 0.208; TAPT, HR, 4.65, 95% CI, 2.01?10.74, P < 0.001).
Conclusion : Additional use of antiplatelet agents in patients with non-cardioembolic ischemic stroke who were already on SAPT did not reduce the 1-year incidence of vascular outcomes, although it increased the risk of bleeding complications.
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KEYWORD
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Multiple Antiplatelet Therapy, Non-Cardioembolic Stroke, Vascular Outcome, Bleeding Risk
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