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JAMA Intern Med:唑来膦酸治疗女性骨质疏松症的疗效和安全性

2015-04-30 范伟译 MedSci原创

重要性: 百分之八十五的被收容的老年人相对于社区老年人,骨质疏松症骨折率的程度要高8到9倍。然而,大多数的人不及时治疗骨质疏松,被排除在关键的试验之外。 摘要目的: 确定唑来膦酸针对于虚弱的长期护理的老年妇女用于治疗骨质疏松症的疗效和安全性。 设计,设定和参与者: 从2007年12月到2012年3月间,我们进行了2年,随机,安慰剂对照的,双盲研究。包括181名妇女,65岁或以上的老年骨质疏松症

重要性: 百分之八十五的被收容的老年人相对于社区老年人,骨质疏松症骨折率的程度要高8到9倍。然而,大多数的人不及时治疗骨质疏松,被排除在关键的试验之外。

摘要目的: 确定唑来膦酸针对于虚弱的长期护理的老年妇女用于治疗骨质疏松症的疗效和安全性。

设计,设定和参与者: 从2007年12月到2012年3月间,我们进行了2年,随机,安慰剂对照的,双盲研究。包括181名妇女,65岁或以上的老年骨质疏松症患者,包括那些认知障碍的、行动不便的,多病的,住在养老院以及需要借助辅助生活设施的老年人。

干预措施: 唑来膦酸或安慰剂通过静脉注射5毫克剂量,每日补充钙和维生素D。

主要结果和措施: 在12个月和24个月,臀部和脊柱骨矿物质密度(BMD)的不良反应。

结果:平均年龄(85.4[0.6]年),BMD,功能的或认知的状态都没有基线差异,但是治疗组中更多的受试者较为脆弱,有糖尿病以及抗癫痫药物的使用情况。BMD值在12个月87%的受试者是有效的,在24个月73%的受试者是有效的。治疗组平均骨密度的变化很大,在12个月和24个月髋部有差异:3.2(0.7)和3.9(0.7) (P<.01),在12个月和24个月脊柱有差异:1.8(0.7)和3.6(0.7) (P < . 01);调整分析类似。治疗组和安慰剂组的骨折率分别为20%和16%(优势比,1.30;95%置信区间,0.61-2.78),死亡率分别为16%和13%(优势比,1.24;95%置信区间,0.54-2.86)。单一比例的跌幅在组间并无差异(28% vs 24%;优势比,1.24;95%置信区间,0.64 -2.42;P=.52),但治疗组更多的受试者有多个下降(49% vs 35%;优势比,1.83;95%置信区间,1.01 -3.33;P = .047);然而,调整基线脆弱后,这种差异不再显著。

结论和意义: 在老年骨质疏松症妇女中,2年以上单一剂量的唑来膦酸能改善臀部和脊柱骨矿物质密度。治疗组骨折率和死亡率临床上无意义的增加需要进一步研究。因为目前尚不清楚,这个小组的这种疗法是否可以减少骨折的风险,在养老院任何实践的改变必须等待更强有力的试验结果来评估骨折率。

原始出处

Greenspan SL1, Perera S2, Ferchak MA3, Nace DA3, Resnick NM3. Efficacy and Safety of Single-Dose Zoledronic Acid for Osteoporosis in Frail Elderly Women: A Randomized Clinical Trial. JAMA Intern Med. 2015 Apr 13

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    2015-06-26 owlhealth

    等待大试验

    0

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    2015-05-03 huaxipanxing

    安全有效是关键

    0

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    2015-05-02 Eleven17
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