在T3抑制测试中可以使用新药剂量吗?
Sedat Çetin1, Mehmet Güven1, Başak Bolayır1
1Department of Endocrinology, Diyarbakır Gazi Yaşargil Training and Research Hospital, 21010, Diyarbakır, Turkey.
Endocrine
|July 10, 2023
概括
较低剂量的triiodothyronine (T3) 在25mcg/day为期七天有效抑制甲状腺刺激激素 (TSH) 水平,类似于较高剂量. 这一发现表明T3抑制测试在诊断甲状腺激素 (RTH) 耐药性的过程中具有更安全,更有用的方法.
科学领域:
- 内分泌学 在内分泌学.
- 甲状腺疾病 甲状腺疾病
- 激素治疗是一种激素治疗.
背景情况:
- T3抑制试验对于区分对甲状腺激素 (RTH) 的抵抗与TSH分泌的垂体腺瘤至关重要.
- 标准的T3剂量 (50-100微克/天) 可能会带来风险,包括心动减速.
研究的目的:
- 评估较低剂量的三甲状腺激素 (T3),25微克/天,是否可以有效地抑制甲状腺刺激激素 (TSH) 水平.
- 在T3抑制试验中,将25微克/天T3剂量与常规50-100微克/天剂量的疗效和安全性进行比较.
主要方法:
- 一项前性研究涉及26名基因确诊RTH.患者.
- 患者被随机分为两组:第一组接受50-100微克/天T3 (3-9天),第二组接受25微克/天T3 (7天).
- 对TSH水平进行了监测,以评估两组之间的抑制反应.
主要成果:
- 在低剂量和高剂量T3组之间,TSH值的平均百分比变化没有显著差异.
- 所有患者的TSH水平至少降低了80%.
- 高剂量组 (9名患者) 与低剂量组 (1名患者) 相比,高剂量组 (9名患者) 中需要普拉诺洛尔的低心率更高.
结论:
- 在抑制测试期间,每天25微克的T3剂量为7天有效抑制TSH水平.
- 较低的T3剂量 (25毫克/天) 似乎更安全,更有用,因为降低了心动减速风险.
- 这一发现支持在临床实践中使用较低的T3剂量进行T3抑制测试.
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