Last menstrual period provides the best estimate of gestation length for women in rural Guatemala
Last menstrual period provides the best estimate of gestation length for women in rural Guatemala
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DOI：
10.1111/j.1365-3016.2006.00741.x
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发表时间：
2006-07-01
影响因子：
2.8
通讯作者：
Martorell, Reynaldo
中科院分区：
文献类型：
--
作者：
Neufeld, Lynnette M.;Haas, Jere D.;Martorell, Reynaldo
在发展中国家农村地区的实地研究中，对胎龄的准确估计仍然是研究人员面临的困难。我们的目的是确定在危地马拉农村估计胎龄的最佳方法。来自危地马拉农村四个社区的育龄妇女被邀请参加一项纵向研究。出生时的胎龄是通过早期妊娠中期测量双顶叶直径、末次月经（LMP）、新生儿Capurro检查和眼底联合高度（SFH）来确定的。采用回归模型确定哪一种方法以超声作为参考提供了最佳的胎龄估计。LMP估计的胎龄在94%的样本超声估计的+/- 14天内。lmp估计的胎龄解释了超声估计的胎龄差异的46%，而新生儿检查只解释了20%。这项研究的结果表明，当训练有素的现场人员帮助妇女回忆她们的LMP日期时，这个日期提供了胎龄的最佳估计。妊娠中期测量的SFH可能在LMP不可用时提供一个合理的选择。
The accurate estimation of gestational age in field studies in rural areas of developing countries continues to present difficulties for researchers. Our objective was to determine the best method for gestational age estimation in rural Guatemala. Women of childbearing age from four communities in rural Guatemala were invited to participate in a longitudinal study. Gestational age at birth was determined by an early second trimester measure of biparietal diameter, last menstrual period (LMP), the Capurro neonatal examination and symphysis-fundus height (SFH) for 171 women-infant pairs. Regression modelling was used to determine which method provided the best estimate of gestational age using ultrasound as the reference. Gestational age estimated by LMP was within +/- 14 days of the ultrasound estimate for 94% of the sample. LMP-estimated gestational age explained 46% of the variance in gestational age estimated by ultrasound whereas the neonatal examination explained only 20%. The results of this study suggest that, when trained field personnel assist women to recall their date of LMP, this date provides the best estimate of gestational age. SFH measured during the second trimester may provide a reasonable alternative when LMP is unavailable.