在低风险怀孕中,生长速度和超声波估计出生体重
Katherine L Grantz1, Madeleine St Ville2, Jessica Gleason1
1Epidemiology Branch, Division of Population Health Research, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland.
American journal of perinatology
|August 7, 2025
概括
将胎儿生长速度添加到出生体重 (BW) 预测模型中,可以显著提高准确性. 纳入第三个三个月的生长速度提高了预测,帮助临床决定胎儿生长评估.
科学领域:
- 产科和妇科 产科和妇科
- 胎儿医学 胎儿医学
- 生物识别仪表是如何使用的
背景情况:
- 准确估计胎儿体重 (EFW) 对于管理怀孕和指导临床决策至关重要.
- 目前的方法主要依赖于单个EFW评估,这些评估在预测准确性方面存在局限性.
- 改善出生体重 (BW) 预测可以减少不良周产期结果.
研究的目的:
- 评估是否结合胎儿生长速度可以提高出生体重 (BW) 的预测准确度,而不是仅使用估计胎儿体重 (EFW).
- 为了确定连续增长速度测量对BW预测准确性的影响.
主要方法:
- 分析了来自2397例低风险单子妊娠的前性数据,在15至41周之间进行了2-5次超声波检查.
- 在连续的超声访问之间计算胎儿生长速度 (V).
- 三种线性回归模型的比较:非V (仅EFW),全V (所有可用的速度) 和单V (仅第三季度的速度).
主要成果:
- 非V模型显示了最高的平均绝对误差 (197g) 和最低的R平方 (0.63).
- 所有V和单V模型都表现出更好的性能,平均绝对误差最低 (192g) 和最高R平方 (0.65).
- 预测BW的比例在实际BW的10%以内,在全V和单V模型 (84.7%) 中最高.
结论:
- 将胎儿生长速度整合到BW估计公式中可以提高预测的准确性.
- 添加第三季度生长速度显著改善了BW预测.
- 这些发现支持使用生长速度来更准确地评估胎儿生长和改善临床管理.
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