JAMA:左旋甲状腺素预防流产证据不足

2017-12-15 佚名 健康界

近日,北京大学第三医院一项多中心跨学科研究显示,甲状腺功能正常但自身抗体阳性的不孕症女性,在体外受精—胚胎移植过程中,不需要预防性应用左旋甲状腺素,但需要监测甲状腺功能的变化。相关研究成果 12 月 12 日在《美国医学会杂志》上发表。

近日,北京大学第三医院一项多中心跨学科研究显示,甲状腺功能正常但自身抗体阳性的不孕症女性,在体外受精—胚胎移植过程中,不需要预防性应用左旋甲状腺素,但需要监测甲状腺功能的变化。相关研究成果 12 月 12 日在《美国医学会杂志》上发表。

既往研究显示,在甲状腺功能正常的妇女中,与甲状腺自身抗体阴性组相比,甲状腺自身抗体阳性组在自然妊娠或体外受精—胚胎移植妊娠后的流产风险显着升高。临床上,很多这类不孕症妇女主动或被动地接受左旋甲状腺素治疗,以期降低流产风险。但绝大多数国际权威专业指南均指出,这类人群是否使用左旋甲状腺素治疗尚缺乏充分证据。

中国工程院院士、北医三院生殖医学中心乔杰和内分泌科洪天配教授共同领导的这项研究,旨在明确左旋甲状腺素治疗能否改善甲状腺自身抗体阳性但甲状腺功能正常的不孕症妇女的妊娠结局,为指导临床实践提供更高级别的循证医学证据。

研究从 3 万多例不孕症妇女中进行筛选,并最终入组 600 例甲状腺自身抗体阳性但甲状腺功能正常的不孕症妇女,随机分为干预组和对照组各 300 例。结果表明,左旋甲状腺素治疗并不能改善甲状腺自身抗体阳性但甲状腺功能正常的不孕症妇女的体外受精—胚胎移植妊娠结局,干预组和对照组的流产率分别为 10.3% 和 10.6%,临床妊娠率分别为 35.7% 和 37.7%,活产率分别为 31.7% 和 32.3%,两组间均未见显着差异。

该研究是甲状腺自身免疫状态与体外受精—胚胎移植妊娠结局相关研究领域,迄今国际上报道的临床研究中样本量最大的研究。

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    2018-01-02 zwjnj2

    好好好学习学习学习.

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    2017-12-18 1209e435m98(暂无昵称)

    学习了.谢谢分享!

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    2017-12-16 神功盖世

    学习

    0

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