通过第二和第三个月的超声波估计双胞胎怀孕的预产日期
K J Rittenhouse1, A V Viswanathan1, T Pokaprakarn1,2
1Department of Obstetrics and Gynecology, University of North Carolina School of Medicine, Chapel Hill, NC, USA.
概括
在双胞胎怀孕中,准确的妊娠年龄约会在第一季度后最好使用较大的双胞胎的生物识别来实现. 与使用较小的双胞胎或平均水平相比,这种方法提供了更好的准确性和更少的偏差.
科学领域:
- 孕产妇和胎儿医学 孕产妇和胎儿医学
- 诊断性超声波 超声波 超声波 超声波
- 双胞胎妊娠管理 双胞胎妊娠管理
背景情况:
- 准确的妊娠约会对于最佳的产前护理和双胞胎怀孕的管理至关重要.
- 超过第一季度的双胞胎怀孕约会带来了独特的超声波挑战.
- 对于单独怀孕的既定方法可能无法直接转化为双胞胎发育的复杂性.
研究的目的:
- 确定最准确的超声波方法,以确定在双胞胎怀孕的妊娠年龄,在第一季度后出现.
- 为了比较使用较小的双胞胎,较大的双胞胎或平均生物识别的准确性和偏差.
- 为改善双胞胎怀孕监测提供基于证据的建议.
主要方法:
- 对596例双胞胎怀孕的回顾性队列研究,确定了第一季度妊娠年龄.
- 对小双胞胎,大双胞胎和两者平均值的超声波生物识别数据 (妊娠≥14周) 的分析.
- 超声波测年估计与经过验证的"地面真相"妊娠年龄的比较.
主要成果:
- 较大的双胞胎生物识别产生了最低的平均绝对误差 (4.1天) 和最小偏差 (0.0天).
- 平均双胞胎生物识别显示平均绝对误差为4.4天,偏差为-2.3天.
- 较小的双胞胎生物识别具有最高的平均绝对误差 (5.8天) 和偏差 (-4.5天).
- 当限制每次怀孕一次扫描和胆管性时,研究结果保持一致.
结论:
- 在双胞胎怀孕中,怀孕年龄约会在第二和第三季度是最准确的,使用较大的双胞胎的生物识别.
- 这种方法最大限度地减少了约会错误和偏见,而不是使用较小的双胞胎或平均值.
- 双胞胎怀孕的超声波约会协议应优先考虑较大的双胞胎的测量,以改善临床管理.
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