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High-Sensitivity Cardiac Troponin T for Risk Stratification in Patients With Embolic Stroke of Undetermined Source.
Stroke ( IF 7.8 ) Pub Date : 2020-07-09 , DOI: 10.1161/strokeaha.120.029628
Jan F Scheitz 1, 2, 3, 4 , Guillaume Pare 5 , Lesly A Pearce 6 , Hardi Mundl 7 , W Frank Peacock 8 , Anna Czlonkowska 9 , Mukul Sharma 10 , Christian H Nolte 1, 2, 3, 4 , Ashkan Shoamanesh 10 , Scott D Berkowitz 11 , Thomas Krahn 7, 12 , Matthias Endres 1, 2, 3, 4, 13 ,
Affiliation  

Background and Purpose:Optimal secondary prevention for patients with embolic stroke of undetermined source (ESUS) remains unknown. We aimed to assess whether high-sensitivity cardiac troponin T (hs-cTnT) levels are associated with major vascular events and whether hs-cTnT may identify patients who benefit from anticoagulation following ESUS.Methods:Data were obtained from the biomarker substudy of the NAVIGATE ESUS trial, a randomized controlled trial testing the efficacy of rivaroxaban versus aspirin for secondary stroke prevention in ESUS. Patients were dichotomized at the hs-cTnT upper reference limit (14 ng/L, Gen V, Roche Diagnostics). Cox proportional hazard models were computed to explore the association between hs-cTnT, the combined cardiovascular end point (recurrent stroke, myocardial infarction, systemic embolism, cardiovascular death), and recurrent ischemic stroke.Results:Among 1337 patients enrolled at 111 participating centers in 18 countries (mean age 67±9 years, 61% male), hs-cTnT was detectable in 95% and at/above the upper reference limit in 21%. During a median follow-up of 11 months, the combined cardiovascular end point occurred in 68 patients (5.0%/y, rivaroxaban 28 events, aspirin 40 events; hazard ratio, 0.67 [95% CI, 0.41–1.1]), and recurrent ischemic stroke occurred in 50 patients (4.0%/y, rivaroxaban 16 events, aspirin 34 events, hazard ratio 0.45 [95% CI, 0.25–0.81]). Annualized combined cardiovascular end point rates were 8.2% (9.5% rivaroxaban, 7.0% aspirin) for those above hs-cTnT upper reference limit and 4.8% (3.1% rivaroxaban, 6.6% aspirin) below with a significant treatment modification (P=0.04). Annualized ischemic stroke rates were 4.7% above hs-cTnT upper reference limit and 3.9% below, with no suggestion of an interaction between hs-cTnT and treatment (P=0.3).Conclusions:In patients with ESUS, hs-cTnT was associated with increased cardiovascular event rates. While fewer recurrent strokes occurred in patients receiving rivaroxaban, outcomes were not stratified by hs-cTn results. Our findings support using hs-cTnT for cardiovascular risk stratification but not for decision-making regarding anticoagulation therapy in patients with ESUS.Registration:URL: https://www.clinicaltrials.gov. Unique identifier: NCT02313909.

中文翻译:

高敏感性心肌肌钙蛋白T用于不确定来源栓塞性卒中患者的风险分层。

背景与目的:对于尚未确定来源的栓塞性卒中(ESUS)患者,最佳的二级预防措施仍然未知。我们旨在评估高敏感性心脏肌钙蛋白T(hs-cTnT)水平是否与主要血管事件相关,以及hs-cTnT是否可以识别ESUS术后抗凝获益的患者。方法:数据来自NAVIGATE的生物标志物子研究ESUS试验,一项随机对照试验,测试了利伐沙班和阿司匹林对ESUS继发性卒中的预防作用。将患者按hs-cTnT参考上限(14 ng / L,Gen V,Roche Diagnostics)二等分。计算Cox比例风险模型以探索hs-cTnT,合并的心血管终点(复发性中风,心肌梗塞,全身性栓塞,心血管死亡)之间的关联,结果:在18个国家的111个参与中心的1337名患者中入组(平均年龄67±9岁,男性61%),可检测到hs-cTnT的比例为95%,参考水平的上限/以上为21%。 。在11个月的中位随访期间,有68例患者发生了合并的心血管终点(5.0%/年,利伐沙班28例,阿司匹林40例;危险比0.67 [95%CI,0.41-1.1]),并且复发缺血性中风发生在50例患者中(4.0%/年,利伐沙班16事件,阿司匹林34事件,危险比0.45 [95%CI,0.25-0.81])。高于hs-cTnT参考上限的患者的年化综合心血管终点率为8.2%(利伐沙班为9.5%,阿司匹林为7.0%),低于hS-cTnT参考上限的患者为4.8%(利伐沙班为3.1%,阿司匹林为6.6%),且治疗方法有明显改变(在18个国家(平均年龄67±9岁,男性61%)的111个参与中心的1337例患者中,可检测到hs-cTnT的比例为95%,高于/高于参考上限的比例为21%。在11个月的中位随访期间,有68例患者发生了合并的心血管终点(5.0%/年,利伐沙班28例,阿司匹林40例;危险比0.67 [95%CI,0.41-1.1]),并且复发缺血性中风发生在50例患者中(4.0%/年,利伐沙班16事件,阿司匹林34事件,危险比0.45 [95%CI,0.25-0.81])。高于hs-cTnT参考上限的患者的年化综合心血管终点率为8.2%(利伐沙班为9.5%,阿司匹林7.0%),低于hS-cTnT参考上限的患者为4.8%(利伐沙班为3.1%,阿司匹林为6.6%),且治疗方法有明显改变(在18个国家(平均年龄67±9岁,男性61%)的111个参与中心的1337例患者中,可检测到hs-cTnT的比例为95%,高于/高于参考上限的比例为21%。在11个月的中位随访期间,有68例患者发生了合并的心血管终点(5.0%/年,利伐沙班28例,阿司匹林40例;危险比0.67 [95%CI,0.41-1.1]),并且复发缺血性中风发生在50例患者中(4.0%/年,利伐沙班16事件,阿司匹林34事件,危险比0.45 [95%CI,0.25-0.81])。高于hs-cTnT参考上限的患者的年化综合心血管终点率为8.2%(利伐沙班为9.5%,阿司匹林7.0%),低于hS-cTnT参考上限的患者为4.8%(利伐沙班为3.1%,阿司匹林为6.6%),且治疗方法有明显改变(hs-cTnT的检出率为95%,达到/高于参考上限的率为21%。在11个月的中位随访期间,有68例患者发生了合并的心血管终点(5.0%/年,利伐沙班28例,阿司匹林40例;危险比0.67 [95%CI,0.41-1.1]),并且复发缺血性中风发生在50例患者中(4.0%/年,利伐沙班16例,阿司匹林34例,危险比0.45 [95%CI,0.25-0.81])。高于hs-cTnT参考上限的患者的年化综合心血管终点率为8.2%(利伐沙班为9.5%,阿司匹林7.0%),低于hS-cTnT参考上限的患者为4.8%(利伐沙班为3.1%,阿司匹林为6.6%),且治疗方法有明显改变(hs-cTnT的检出率为95%,达到/高于参考上限的率为21%。在11个月的中位随访期间,有68例患者发生了合并的心血管终点(5.0%/年,利伐沙班28例,阿司匹林40例;危险比0.67 [95%CI,0.41-1.1]),并且复发缺血性中风发生在50例患者中(4.0%/年,利伐沙班16事件,阿司匹林34事件,危险比0.45 [95%CI,0.25-0.81])。高于hs-cTnT参考上限的患者的年化综合心血管终点率为8.2%(利伐沙班为9.5%,阿司匹林7.0%),低于hS-cTnT参考上限的患者为4.8%(利伐沙班为3.1%,阿司匹林为6.6%),且治疗方法有明显改变(风险比为0.67 [95%CI,0.41-1.1])和复发性缺血性卒中发生在50例患者中(4.0%/年,利伐沙班16事件,阿司匹林34事件,风险比0.45 [95%CI,0.25-0.81]) 。高于hs-cTnT参考上限的患者的年化综合心血管终点率为8.2%(利伐沙班为9.5%,阿司匹林7.0%),低于hS-cTnT参考上限的患者为4.8%(利伐沙班为3.1%,阿司匹林为6.6%),且治疗方法有明显改变(风险比为0.67 [95%CI,0.41-1.1])和复发性缺血性卒中发生在50例患者中(4.0%/年,利伐沙班16事件,阿司匹林34事件,风险比0.45 [95%CI,0.25-0.81]) 。高于hs-cTnT参考上限的患者的年化综合心血管终点率为8.2%(利伐沙班为9.5%,阿司匹林7.0%),低于hS-cTnT参考上限的患者为4.8%(利伐沙班为3.1%,阿司匹林为6.6%),且治疗方法有明显改变(P = 0.04)。年化缺血性卒中发生率比hs-cTnT上限高4.7%,低于hs-cTnT上限3.9%,无提示hs-cTnT与治疗之间存在相互作用(P = 0.3)。结论:在ESUS患者中,hs-cTnT与增加心血管事件发生率。尽管接受利伐沙班的患者复发性中风的发生率较低,但结果并未被hs-cTn结果分层。我们的研究结果支持使用hs-cTnT进行ESUS患者的心血管风险分层,但不用于有关抗凝治疗的决策.URL:https://www.clinicaltrials.gov。唯一标识符:NCT02313909。
更新日期:2020-07-28
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