JAMA Cardiol:房颤负荷与卒中风险的相关性

2018-05-22 国际循环编辑部 国际循环

心房颤动(房颤)是卒中的一个潜在危险因素,但阵发性房颤患者房颤负荷是否独立影响血栓栓塞(TE)风险仍存争议。Alan S.Go等研究者发表于JAMA Cardiol杂志的一项最新研究对此进行了探讨。

房颤动(房颤)是卒中的一个潜在危险因素,但阵发性房颤患者房颤负荷是否独立影响血栓栓塞(TE)风险仍存争议。Alan S.Go等研究者发表于JAMA Cardiol杂志的一项最新研究对此进行了探讨。

该回顾性队列研究纳入2个大规模综合医疗保健系统中1965例(平均年龄68.8岁)未服用抗凝剂的2周持续动态心电图监测的阵发性房颤患者。随访5年,记录缺血性卒中或其他血栓栓塞发病情况。房颤负荷定义为在2周监测期间房颤或房扑中可分析有效持续时间百分比。

患者未接受抗凝治疗时发生的缺血性卒中和其他动脉血栓栓塞事件通过电子病历在2016年11月确定,并通过人工审查进行验证。校正抗凝和房颤风险因素(ATRIA)或CHA2DS2-VASc卒中风险评分后,评估未进行抗凝治疗的房颤患者与血栓栓塞的关系。

结果,1965例阵发性房颤患者中,平均年龄为69(11.8)岁,女性为880例(45%),有色人种496例(25%),中位ATRIA卒中风险评分为4(四分位数间距[IQR]:2~7),中位CHA2DS2-VASc评分为3(IQR:1~4)。房颤中位负荷为4.4%(IQR:1.1%~17.23%)。随访期间,共发生19次缺血性卒中,8次短暂性脑缺血发作和2次系统性血栓栓塞。血栓栓塞的整体发病率为1.5%/年。校正CHA2DS2-VASc评分后,房颤发生的第三三分位组的血栓栓塞风险比第一或第二三分位组高215%。最长的房颤发作持续时间与血栓栓塞事件的风险无关。

该研究结果提示,针对非阵发性房颤患者,血栓栓塞风险与房颤负荷有关,独立于其他卒中风险因素。

原始出处:
Alan S.Go, Kristi Reynolds, Jingrong Yang, et al. Association of Burden of Atrial Fibrillation With Risk of Ischemic Stroke in Adults With Paroxysmal Atrial Fibrillation. JAMA Cardiol. Published online May 16, 2018.

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    2018-05-23 baihao215

    如何定义这个负担

    0

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    2018-05-23 健健

    卒中虽然是临床上常见病,溶栓,取栓等血管内治疗也很成熟,但是仍然有很多未知问题有待认知!

    0

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