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BMJ:妊娠期补充高剂量叶酸对先兆子痫的影响

2018-09-13 xing.T MedSci原创

由此可见,在妊娠早期补充4.0mg/天的叶酸并不能预防高危患者的先兆子痫。

近日,顶级杂志BMJ上发表了一篇研究文章,研究人员旨在明确高剂量叶酸补充剂对预防女性先兆子痫的疗效,这些女性至少存在一种危险因素:预先存在的高血压、妊娠前糖尿病(1型或2型)、双胎妊娠、先前妊娠发生过先兆子痫或体重指数≥35。

该研究为随机、III期、双盲、国际多中心临床试验,是在五个国家(阿根廷、澳大利亚、加拿大、牙买加和英国)的70个产科中心完成。参与者为2011年至2015年期间2464名至少存在一种先兆子痫危险因素的孕妇(叶酸组1144人,安慰剂组1157人); 2301名参与者被纳入意向治疗分析。符合条件的女性随机接受每日高剂量叶酸(4片1.0mg口服片剂)或安慰剂治疗,从妊娠8周至妊娠第16周开始,直至分娩。临床医生、参与者、评审员和研究人员对研究治疗分组不知情。该研究的主要结局为先兆子痫,定义为妊娠20周后出现的大量蛋白尿或HELLP综合征(溶血、肝酶升高和血小板减少)。

叶酸组169/1144(14.8%)名孕妇发生先兆子痫,安慰剂组有156/1157(13.5%)名(相对风险为1.10,95%置信区间为0.90-1.34; P=0.37)。对于任何其它不良的孕产妇或新生儿结局,没有证据表明两组之间存在差异。

由此可见,在妊娠早期补充4.0mg/天的叶酸并不能预防高危患者的先兆子痫。

原始出处:


Shi Wu Wen,et al.Effect of high dose folic acid supplementation in pregnancy on pre-eclampsia (FACT): double blind, phase III, randomised controlled, international, multicentre trial.BMJ 2018; https://www.bmj.com/content/362/bmj.k3478

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    2019-04-05 amy0550
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    2019-08-15 智智灵药
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    2018-09-13 orangesking

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