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Updated: Mar 18, 2026

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Human Blastocyst Biopsy and Vitrification
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在新鲜或冷单个胚胎移植后的第一季度生长:胚胎裂变与胚胎囊阶段
Mujin Ye1,2, Mariana Tavares Barroso1, Anna Sara Oberg2
1Department of Oncology-Pathology, Laboratory of Translational Fertility Preservation, Karolinska Institutet, Stockholm, Sweden.
Human reproduction open
|March 16, 2026
概括
冷胚胎转移 (FET) 与新鲜胚胎转移 (ET) 相比,与第一季度略大一些的冠状长 (CRL) 有关. 这一发现无论胚胎阶段如何,都适用,这表明辅助生殖技术怀孕的早期生长差异.
科学领域:
- 生殖医学 生殖医学
- 胚胎学 胚胎学
- 周围生理学 周围生理学
背景情况:
- 研究表明,冷/解的胚胎移植 (ET) 单独生子的出生体重比新鲜的ET更高.
- 一些研究表明,冷胚胎移植 (FET) 后的冠状长度 (CRL) 比新鲜的ET更大.
- 关于胚胎阶段 (裂变与胚囊) 如何影响FET与新鲜ET的第一季度生长的知识有限.
研究的目的:
- 为了确定第一季度子宫内生长是否在新鲜和冷单胚胎移植 (ET) 之间有所不同.
- 调查转移时的胚胎阶段是否会影响新鲜与冷ET怀孕的第一季度生长.
主要方法:
- 单个胚胎移植 (ET) 的前性队列研究,导致单个活产 (2013-2024年).
- 在6-12个妊娠周之间对冠状长度 (CRL) 的超声波测量.
- 一般化添加剂模型用于比较FET和新鲜ET组之间的CRL,调整混因子并按胚胎阶段分析.
主要成果:
- 冷胚胎移植 (FET) 怀孕显示,与新鲜的ET (β=0.30毫米,P=0.053) 相比,第一季度的冠状长 (CRL) 较大,经过对混因素的调整.
- 这种差异在切割阶段 (β=0.31毫米,P=0.055) 和胚囊阶段 (β=0.22毫米,P=0.008) 的转移中都被观察到.
- 与自然怀孕相比,FET和新鲜ET的CRLZ-score平均值高于0,这表明ART怀孕的早期增长更大.
结论:
- 第一个三个月的子宫内生长,通过CRL测量,在冷和新鲜胚胎移植之间存在差异,在怀孕早期出现.
- 冷胚胎移植 (FET) 对CRL的影响在切割和胚胎囊阶段是一致的.
- 在ART怀孕中使用CRL进行妊娠年龄测定时应谨慎使用,因为可能会高估和错过生长限制.
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