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JCEM:左旋甲状腺素对于甲状腺过氧化物酶抗体阴性的亚临床甲减孕妇有何影响?

2017-11-08 MedSci MedSci原创

大家都知道目前关于甲状腺过氧化物酶抗体阴性的亚临床甲减孕妇(SCH-TPOAb-)的甲状腺筛查和左旋甲状腺素(LT4)治疗尚未达成共识。而近日在JCEM上发表的一篇文章则评估了LT4对于SCH-TPOAb-妊娠结局的治疗效益。

大家都知道目前关于甲状腺过氧化物酶抗体阴性的亚临床甲减孕妇(SCH-TPOAb-)的甲状腺筛查和左旋甲状腺素(LT4)治疗尚未达成共识。而近日在JCEM上发表的一篇文章则评估了LT4对于SCH-TPOAb-妊娠结局的治疗效益。

Sima Nazarpour等人对SCH-TPOAb-孕妇进行了一项单盲随机临床试验,以促甲状腺激素(TSH)2.5mIU/L为切入点,纳入了366例SCH-TPOAb-和1092例甲功正常TPOAb-的妇女。SCH-TPOAb-的妇女被随机分为两组:A组(n=183)用LT4治疗而B组(n=183)不接受治疗。1028例甲功正常的SCH-TPOAb- 妇女作为对照组(C组)。研究的主要结果是早产率。

研究结果显示,以TSH2.5 mIU/L为切入点,A组和B组之间早产无显着差异(RR = 0.86,95%CI:0.47-1.55,P = 0.61)。然而,基于切点为4.0mIU/L的对数二项式模型分析显示与未接受治疗的妇女相比,LT4显着降低早产率(RR = 0.38,95%CI:0.15-0.98,P = 0.04)。

由上述研究可以发现,尽管以TSH2.5mIU/L为切点,LT4治疗对于减少SCH-TPOAb-妇女早产率没有效果,但如果以最新推荐的≥4.0mIU/L为切点,LT4可能减少这一并发症。

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    2018-08-27 smallant2015
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    2018-04-24 achengzhao
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左旋甲状腺素从从每日一次切换到每周一次(剂量为每日剂量的7倍量)可有效治疗女性的甲状腺功能减退症,实现甲状腺功能。古尔加翁公园医院的Satish C. Wasoori博士和同事对40名25-55岁长期甲状腺功能减退(至少5年)的女性进行了研究,这些患者目前服用每日剂量的左旋甲状腺素,评估切换到每周一次(剂量为每日剂量的7倍量)对甲状腺功能减退症的疗效。参与者被分为两组:1组(n = 20),TSH

重复:N Engl J Med:左旋甲状腺素对亚临床甲减老年患者或是无用的治疗

亚临床甲状腺功能减退患者是否应接受左旋甲状腺激素治疗仍存在争议。2017年6月,发表在《N Engl J Med》上的一项研究显示,左旋甲状腺素未给亚临床甲状腺功能减退老年患者提供明显益处。

JAMA Intern Med:左旋甲状腺素可能过度用于临界甲状腺问题

10月7日在线发表于《JAMA内科学》杂志的一项研究显示,左旋甲状腺素钠被越来越多地用于临界甲状腺激素水平的患者中。 英国加的夫大学的Peter N. Taylor和同事们利用“英国临床实践研究数据链”,发现在2001年1月1日与2009年10月30日之间,有52,298名患者接受了左旋甲状腺素的处方。研究人员提取了左旋甲状腺素治疗开始前和治疗5年时的促甲状腺素水平数据。【原文下载】 研究人员

注意!牛奶或可影响左旋甲状腺素吸收

甲状腺功能减退症是最常见的甲状腺疾病之一,由于缺碘、自身免疫变化、辐射损伤等因素引起的甲状腺本身合成和分泌甲状腺激素减少引起的甲减,称为原发性甲减。占全部(原发性和继发性)甲减的99%以上。需要长期服用左甲状腺素钠(L-T4)治疗,甚至需要终生服药。

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