增长激素刺激测试对矮人进行实用性评估
Rahul Gupta1, Aashima Dabas2, Shweta Kohli1
1Department of Endocrinology and Metabolism, All India Institute of Medical Sciences, New Delhi, India.
Indian journal of endocrinology and metabolism
|June 24, 2024
概括
在生长激素刺激试验 (GHST) 期间少取血液样本的时间点,增加了诊断生长激素缺乏症 (GHD) 的错误阳性率. 优化测试方案对于准确评估儿童的矮身是非常重要的.
科学领域:
- 儿科内分泌学 儿科内分泌学
- 诊断测试 诊断测试 诊断测试
- 激素检测测试验 激素检测试验
背景情况:
- 矮身是儿科内分泌学中常见的问题,需要准确诊断生长激素缺乏症 (GHD).
- 增长激素刺激试验 (GHST) 对于评估GH储备至关重要,但可能资源密集.
- 优化GHST协议对于平衡诊断准确性和效率至关重要.
研究的目的:
- 评估克洛尼丁刺激试验 (CST) 和葡萄糖刺激试验 (GST) 在诊断矮身儿童的GHD中的性能.
- 评估缩短采样时间点对GHST的错误阳性率的影响.
主要方法:
- 在2005年至2020年期间,对556名被评估为矮身的儿童进行了一项单一中心的回顾性研究.
- 利用CST和GST评估生长激素 (GH) 储备,当CST峰值GH为5至≤10 ng/mL时执行GST.
- 分析的FPR与限制GH采样在两个或三个时间点相关.
主要成果:
- 中位峰值GH水平在CST上为5.50 ng/mL,在GST上为7.45 ng/mL.
- 将抽样限制在两个时间点,导致CST的FPR为13.6%,GST为11.5%.
- 限制在三个时间点时,CST的FPR为8.5%,GST为3.8%.
- 一个最佳的CST峰值GH切线7.79 ng/mL显示了83.8%的灵敏度和89.4%的GHD的特异性.
结论:
- 在刺激试验中减少GH采样点的数量会增加假阳性率.
- 需要仔细考虑采样频率,以保持GHST的诊断准确性.
- 优化GHST协议可以提高在矮小的儿童中诊断GHD的效率.
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