Eur Heart J:一箭双雕 房颤患者用抗凝药还能预防痴呆

2017-10-27 朱柳媛 中国循环杂志

发表在《欧洲心脏杂志》的一项来自瑞典的回顾性登记注册研究发现,抗凝药还有一种重要作用——预防痴呆症。

发表在《欧洲心脏杂志》的一项来自瑞典的回顾性登记注册研究发现,抗凝药还有一种重要作用——预防痴呆症。

这项覆盖44万多例房颤患者、平均随访3.4年多的研究显示,与基线没用抗凝药物的患者相比,应用抗凝药的患者出现痴呆症的风险降低了29%。
 
研究者发现,房颤患者应用抗凝药物期间的痴呆症风险降幅更大,达48%。此外,确诊房颤后越早应用抗凝药物,痴呆症风险降幅越大。
 
分析表明,在房颤患者中,痴呆症的强烈预测因素包括:未服用抗凝药、高龄、帕金森病、酗酒。
 
研究者指出,这一研究结果说明,看在抗凝药物能预防痴呆的份上,房颤患者也应早期启动抗凝治疗。
 
他们表示,要想验证抗凝药物是否真的有痴呆预防作用,需要开展随机安慰剂对照研究,但从伦理学角度来说,开展这样的研究是不太可能的。
 
在讨论具体机理时,作者分析认为,大血栓会导致中风,而小血栓经常神不知鬼不觉地进入脑部,从而引起痴呆,而抗凝药物可能通过减少小血栓起到预防痴呆的作用。
 
研究人员还对比分析了新型口服抗凝药与华法林对痴呆症风险的影响,发现这两类抗凝药物效果类似(HR=0.97)。
 
这项研究纳入瑞典2006-2014年所有确诊房颤但没有痴呆症的患者。54.3%的房颤患者基线没有服用抗凝药,42.9%应用华法林,2.9%应用新型口服抗凝药。
 
原始出处:
Friberg L, Rosenqvist M. Less dementia with oral anticoagulation in atrial fibrillation. Eur Heart J. Published: 24 October 2017

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    2017-10-28 zhaojie88
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    2017-10-28 slcumt
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