单胆双胞胎缺陷的不一致性:患病率和对围产期结果的影响
Ewelina Litwinska1, Izabela Walasik1, Monika Szpotanska-Sikorska1
11st Department of Obstetrics and Gynecology, Medical University of Warsaw, Pl. Starynkiewicza 1/3, 02-015 Warsaw, Poland.
Diagnostics (Basel, Switzerland)
|February 13, 2026
概括
具有不一致的结构缺陷和正常aCGH结果的单双胞胎发生在5.5%的病例中. 心脏缺陷是最常见的,显著的交织成长不一致性增加胎儿损失的风险.
科学领域:
- 周围生理学 周围生理学
- 孕产妇和胎儿医学 孕产妇和胎儿医学
- 遗传学 是一个遗传学.
背景情况:
- 双胞胎 (MC) 双胞胎比单胞胎具有更高的先天性异常风险.
- 结构缺陷的不一致性发生在80%受影响的双胞胎怀孕中.
- 正常的比较基因组杂交 (aCGH) 结果并不排除MC双胞胎的结构异常.
研究的目的:
- 为了确定MC双胞胎正常aCGH的不一致结构缺陷的患病率.
- 识别常见的缺陷类型及其与围产期结果的关联.
- 评估这些怀孕中胎儿损失和早产的风险.
主要方法:
- 追溯分析381个MC双胞胎怀孕与第一季度查.
- 包括标准:不一致的胎儿结构异常和正常的aCGH.
- 收集关于缺陷类型,胎儿损失,早产和相关因素的数据.
主要成果:
- 21 (5.5%) 的MC双胞胎怀孕有与正常aCGH不一致的结构缺陷.
- 最常见的缺陷:心脏 (8),中枢神经系统 (CNS) (6),以及面部 (3).
- 交织的冠状长度 (CRL) 不一致性>20%与胎儿死亡相关 (p=0.046).
- 在32周前的早产 (47%) 与多水症 (p=0.001) 强烈相关,特别是在中枢神经系统/面部缺陷中.
结论:
- 大约5%的MC双胞胎表现出不和的结构缺陷,尽管正常的aCGH.
- 心脏异常是最常见的异调缺陷类型.
- 双胞胎CRL差异>20%是MC双胞胎胎损失的重要危险因素.
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