BMJ:降脂药物降低70岁以上老年人中风风险

2015-05-23 MedSci MedSci原创

在高收入国家,越来越多的老年人出现心血管疾病。目前大多数关于降低心血管事件风险的药物的临床研究的参与者都是70岁以下,因此对于大于70岁的老年人该类药物的作用尚不明确。近期Alpérovitch A等人将关于该问题的探究结果发表在了近期《BMJ》上。该研究探究了对于没有已知的心血管事件既往史的老年人,使用降脂药物(他汀类或贝特类)对其冠心病和中风的长期风险的影响。研究者于1999-2000年,在三

在高收入国家,越来越多的老年人出现心血管疾病。目前大多数关于降低心血管事件风险的药物的临床研究的参与者都是70岁以下,因此对于大于70岁的老年人该类药物的作用尚不明确。近期Alpérovitch A等人将关于该问题的探究结果发表在了近期《BMJ》上。

该研究探究了对于没有已知的心血管事件既往史的老年人,使用降脂药物(他汀类或贝特类)对其冠心病和中风的长期风险的影响。研究者于1999-2000年,在三个法国城市(波尔多、第戎、蒙彼利埃)的大于等于65岁的社区居住人口中抽取随机样本。通过5个面对面的考核招募参与者进行该项持续的基于人群的队列研究。

该研究最终共纳入了7484名参与者(其中女性占了63%),平均年龄73.9岁,参与试验前均没有心血管事件既往史。研究者对参与者平均随访时间长达9.1年。

研究结果显示,与不使用降脂药物的人群比较发现使用降脂药物可以降低中风的风险(HR 0.66, 95% CI 0.49 to 0.90);对降脂药物按他汀类或贝特类分类后分析发现,两种药物对中风风险降低效果相似,他汀类HR 0.68, 95% CI 0.45 to1.01,贝特类 HR 0.66, 95% CI 0.44 to 0.98。不过数据分析发现老年人降脂药物的使用对冠心病的发生或风险影响没有显著的统计学意义(HR 1.12, 95% CI 0.90 to 1.40)。研究者根据参与者年龄、性别、BMI、高血压、收缩压、甘油三酯浓度、倾向得分等进行分层分析后并没有发现降脂药物对中风或冠心病的影响的研究结果有改变。

大多数高收入国家在过去的二十年里,人们服用降低药物的比例,尤其是他汀类药物呈明显上升趋势;尤其是年龄较大的老年人比例明显高于年轻人。研究结果也表明,对于既往没有心血管事件史的老年人使用降脂药物(他汀类或贝特类)可以降低其30%的发生中风的风险。
 
原始出处:

Alpérovitch A, Kurth T, Bertrand M, Ancelin M-L, Helmer C, Debette S, Tzourio C: Primary prevention with lipid lowering drugs and long term risk of vascular events in older people: population based cohort study, BMJ. vol. 350; 2015.

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    2015-11-08 gaoxiaoe
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    2015-05-25 huaxipanxing

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    2015-05-25 Boyinsh

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