JCEM:左旋甲状腺素补充对亚临床甲状腺功能减退患者心脏形态和功能的影响

2022-07-13 MedSci原创 MedSci原创

从CO、LVEF和E/A比值的明显变化来看,补充LT4可有效改善SCH患者普遍存在的心脏收缩和舒张功能障碍。该研究为推荐在成年SCH患者中补充LT4提供了证据。

甲状腺激素水平异常对心血管系统的影响已经被探索了几十年。近年来,新出现的证据表明,亚临床甲状腺功能障碍,特别是亚临床甲状腺功能减退(SCH)显著影响心脏指标。

近日,内分泌和代谢性疾病领域权威杂志Journal of Clinical Endocrinology & Metabolism上发表了一篇研究文章,该研究旨在明确常用于治疗甲状腺功能减退的药物左旋甲状腺素(LT4)是否影响SCH患者的心血管指标。

这是一项系统的回顾和荟萃分析。研究人员检索了在线数据库,分析了补充LT4前后SCH患者心脏形态和功能变化的研究。该研究共有294例SCH患者参与并完成了随访。研究人员采用固定或随机效应模型计算标准均数差(SMD)和95%置信区间(CI)。该研究的主要结局指标包括18项指标,主要包括心脏形态、心肌功能(包括收缩和舒张功能各项指标)、二尖瓣波流量和全身血管阻力(SVR)。

该分析共有11项研究符合检索标准。所有研究均明确提到随访时血清促甲状腺素水平降至正常。该研究的结果表明,与基线水平相比,补充LT4后,心输出量(CO)、左心室射血分数(LVEF)和E峰值速度/A峰值速度之比均显著增加。然而,研究人员没有发现明显的心脏形态学改变的证据。

由此可见,从CO、LVEF和E/A比值的明显变化来看,补充LT4可有效改善SCH患者普遍存在的心脏收缩和舒张功能障碍。该研究为推荐在成年SCH患者中补充LT4提供了证据。

原始出处:

Xichang Wang,et al.Effect of Levothyroxine Supplementation on the Cardiac Morphology and Function in Patients with Subclinical Hypothyroidism: A Systematic Review and Meta-analysis.JCEM.2022.https://academic.oup.com/jcem/advance-article/doi/10.1210/clinem/dgac417/6639426

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    2023-02-25 achengzhao
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    2022-08-07 smallant2015
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    2022-07-12 jingjing

    大家一般关心疾病,但是亚临床更重要,这是疾病防控方向的前移,各类疾病都是这样。如亚临床甲减,亚临床心肌损伤,亚临床心衰等

    0

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