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JAMA Netw open:双胎妊娠“最佳妊娠体重”增加范围与围生结局的关系

2022-07-21 liangying MedSci原创

目前医学研究所GWG的建议对中度或重度肥胖的人来说可能过高。

在过去的50年里,双胞胎怀孕率从1.8%上升到3.3%。与单胎妊娠相比,双胎妊娠的个体及其婴儿围产期死亡率和发病率增加,如早产、妊娠高血压疾病、妊娠糖尿病和胎儿生长受限等。现有的双胎妊娠体重增加(GWG)建议缺乏针对体重不足个体的建议,并且没有按肥胖类别进行分层。

本研究的目的是通过对双胎妊娠的孕前体重指数(BMI)分类,确定与减少不良围产期结局相关的最佳孕期体重指数范围。

这项基于人群的双胎妊娠队列研究使用国家卫生统计中心的数据,于2014年1月1日-2018年12月31日期间进行。统计分析时间为2021年10月24日-2022年5月7日。研究人群包括262604名年龄在18岁至45岁之间的个体,他们在妊娠24周至42周期间出生,没有先天性畸形。有两种方法用于确定最佳GWG范围:一种是基于统计的方法,计算低风险人群中GWG的IQR;另一种是基于结果的方法,确定低于或高于GWG阈值的不良围产期结局增加的GWG阈值。

主要结局为小于36周的早产,妊娠期高血压疾病,胎龄小,胎龄大,复合结局定义为任何个体结局的发生。

研究最后纳入200810名双胎妊娠者。在低风险亚组(n=61794)中,使用基于统计的方法评估妊娠36周后总GWG的IQR为体重不足15.9至22.7千克,正常体重15.4至22.7千克,超重12.7至22.2千克,1级肥胖10.0至20.0千克,2级肥胖7.7至18.1千克,3级肥胖5.9至16.3千克。

使用研究人群和医学研究所建议评估的GWG IQR的比较

使用基于结果的方法和BMI组确定的36周最佳GWG范围为体重不足17.5至24.9千克,正常体重15.0至24.9千克,超重15.0至24.9千克,1级肥胖10.0至19.9千克,2级肥胖7.5至17.4千克,3级肥胖5.0至9.9千克。使用验证样本(n=49 275)评估的多变量logistic模型表明,最佳范围之外的GWG与36周以下的早产、妊娠高血压疾病以及胎龄大小有关。

这项以人群为基础的队列研究发现,对于双胎妊娠,体重过轻者与不良围产期结局减少相关的最佳GWG范围与体重正常者相似,但随着肥胖严重程度的增加而降低。目前医学研究所GWG的建议对中度或重度肥胖的人来说可能过高。

 

参考文献:

Lin D, Huang X, Fan D, et al. Association of Optimal Gestational Weight Gain Ranges With Perinatal Outcomes Across Body Mass Index Categories in Twin Pregnancies. JAMA Netw Open. 2022;5(7):e2222537. doi:10.1001/jamanetworkopen.2022.22537

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    2023-05-26 feather89
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    2023-03-24 canlab
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    2022-08-12 1341ff6fd1m

    感谢分享我们团队研究

    0

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    2022-07-20 肿瘤克星

    JAMA上文章都是顶级的,谢谢梅斯及时上新

    0

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