Circulation:>80岁高龄老人收缩压较低会增加死亡率

2017-07-18 选题审校:闫盈盈 编辑:吴刚 环球医学

老年人的高血压患病率较高。收缩压(SBP)升高可能是老年人心血管疾病最重要的风险因素。但对于高龄老人(80岁以上老年患者),是否收缩压越低越好?在临近生命末期,老年人的收缩压的轨迹是什么样的?2017年6月,发表在《Circulation》的一项由英国科学家使用电子健康记录进行的的队列研究,考察了>80岁者的收缩压轨迹、衰弱和全因死亡率。

老年人的高血压患病率较高。收缩压(SBP)升高可能是老年人心血管疾病最重要的风险因素。但对于高龄老人(80岁以上老年患者),是否收缩压越低越好?在临近生命末期,老年人的收缩压的轨迹是什么样的?2017年6月,发表在《Circulation》的一项由英国科学家使用电子健康记录进行的的队列研究,考察了>80岁者的收缩压轨迹、衰弱和全因死亡率。

背景:对于≥80岁者,临床试验表明,降低收缩压(SBP)具有获益,但是非随机流行病学研究表明,较低的SBP与较高的死亡率相关。本研究旨在评估该人群中,不同的衰弱分类,SBP与全因死亡率之间的相关性,以及评估死亡前的SBP轨迹。

方法:本研究为一项基于人群的队列研究,使用了英国2001~2014年全科诊所中144403名≥80岁参与者的电子健康记录数据。参与者随访≤5年。分析了SBP临床记录。使用e-衰弱指数对衰弱状态分级为适合、轻度、中度、严重。评估了Cox成比例风险模型中不同衰弱状态和平均SBP的全因死亡率。使用人-月作为观察值,使用平均SBP和每人月评估的降压治疗状态评估SBP轨迹。多项式模型用于评估死亡前5年的SBP轨迹。

结果:随访期间,发生了51808例死亡。死亡率随着衰弱水平的增加而增加,SBP<110mmHg死亡率最高。在无衰弱状态的女性中,SBP为120~139mmHg时,死亡率为7.7/100人年;110~119mmHg时为15.2/100人年;<110mmHg时为22.7/100人年。对于衰弱为严重状态的女性,死亡率分别为16.8、25.2和39.6。SBP轨迹表明,生命最后两年,SBP加速下降。与最后5年相比,SBP<120mmHg的相对比例在治疗(比值比,6.06;95% CI,5.40~6.81)和未治疗(比值比,6.31;5.30~7.52)的患者中,生命最后3年时均更高。无证据支持在生命最后2年进行强化降压治疗。

结论:SBP在生命最后2年的降低表明,如果血压较低患者临近生命末期,那么非随机流行病学得出的较低SBP和较高死亡率之间的相关性可以用反向因果关系来解释。

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  2. [GetPortalCommentsPageByObjectIdResponse(id=1840310, encodeId=b65518403106a, content=<a href='/topic/show?id=10905e20546' target=_blank style='color:#2F92EE;'>#收缩压#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=34, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=57205, encryptionId=10905e20546, topicName=收缩压)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4dfa37, createdName=huhuaidong387, createdTime=Sat Nov 18 17:23:00 CST 2017, time=2017-11-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=227068, encodeId=7a1522e068b7, content=降压目标个性化, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/oLAjfB7s1ib2JlGvwpAibiaovVhfA9DbO7X7JLGGjM4Cic6oMgxLdnuS9piaP9cnG2OwIbkzHvX0qzS1boibyYNqR5vHZu7HQs5EIB/0, createdBy=298d1398341, createdName=lou.minghong, createdTime=Fri Jul 28 05:33:27 CST 2017, time=2017-07-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=225132, encodeId=c2842251327d, content=非常好的文章,学习了,很受益, beContent=null, objectType=article, channel=null, level=null, likeNumber=64, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7LIiaRZTzJ3SEfiauCzTMPW7YvPPYLNJBXG9oh6Al1icq2VQQkIHWxqXehcicTS62YKJVBhxeth3wggw/0, createdBy=7ce01621306, createdName=天涯183, createdTime=Sat Jul 22 18:55:53 CST 2017, time=2017-07-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1416055, encodeId=721b1416055c0, content=<a href='/topic/show?id=99fb1028231b' target=_blank style='color:#2F92EE;'>#高龄#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=102823, encryptionId=99fb1028231b, topicName=高龄)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=307c3130149, createdName=xlysu, createdTime=Thu Jul 20 05:23:00 CST 2017, time=2017-07-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=223590, encodeId=dc92223590c9, content=非常好的文章,学习了,很受益, beContent=null, objectType=article, channel=null, level=null, likeNumber=62, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7LIiaRZTzJ3SEfiauCzTMPW7YvPPYLNJBXG9oh6Al1icq2VQQkIHWxqXehcicTS62YKJVBhxeth3wggw/0, createdBy=7ce01621306, createdName=天涯183, createdTime=Tue Jul 18 16:57:50 CST 2017, time=2017-07-18, status=1, ipAttribution=)]
    2017-07-28 lou.minghong

    降压目标个性化

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    2017-07-22 天涯183

    非常好的文章,学习了,很受益

    0

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    2017-07-20 xlysu
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    2017-07-18 天涯183

    非常好的文章,学习了,很受益

    0