足月胎儿体重的超声估计准确性：谢泼德法与哈洛克法的比较。

Accuracy of ultrasound estimation of fetal weight at term: A comparison of shepard and hadlock methods.

机构信息

Department of Obstetrics and Gynecology, University of Abuja Teaching Hospital, Abuja FCT, Nigeria.

出版信息

Ann Afr Med. 2022 Jan-Mar;21(1):49-53. doi: 10.4103/aam.aam_76_20.

DOI:10.4103/aam.aam_76_20

PMID:35313405

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9020636/

Abstract

BACKGROUND

Ultrasound measurement provides a noninvasive means of obtaining information about fetal weight and may help in necessary preparations at and after delivery. Although some ultrasound methods include only one or two fetal indices, others, to improve accuracy, incorporate either three or all the four fetal indices. The aim of this report is to assess the accuracy of two different methods for fetal weight estimation.

MATERIALS AND METHODS

This was a prospective study of 170 consecutive pregnant women at term. Ultrasound was used to estimate fetal weight by the Shepard and Hadlock methods, and the actual birth weight (ABW) was determined at birth. The ultrasound-estimated fetal weights (EFWs) and ABW were analyzed.

RESULTS

The women were aged 21-42 years (mean 31.3 ± 7 years). The EFW using the Shepard method was 1.9 kg-5.0 kg (mean 3.6 ± 0.5 kg) and 1.8 kg-4.4 kg (mean 3.3 ± 0.4 kg) for Hadlock method, and ABW was 2.0 kg-4.5 kg (mean 3.4 ± 0.5 kg). The mean EFW using the Shepard method was significantly higher than that of ABW (P < 0.001). The Shepard method significantly overestimated macrosomia compared to that by the ABW. There was no significant difference in microsomia rate between the two methods and ABW.

CONCLUSION

The Hadlock method was more accurate at estimating fetal weight compared to the Shepard method and is recommended for the ultrasound estimation of fetal weight in our setting and similar settings.

摘要

背景

超声测量提供了一种非侵入性的方法来获取有关胎儿体重的信息，并有助于分娩前后的必要准备。虽然一些超声方法只包括一两个胎儿指数，但其他方法为了提高准确性，要么纳入三个，要么纳入所有四个胎儿指数。本报告的目的是评估两种不同的胎儿体重估计方法的准确性。

材料与方法

这是一项对 170 例足月连续孕妇的前瞻性研究。超声用于通过 Shepard 和 Hadlock 方法估计胎儿体重，并在出生时确定实际出生体重（ABW）。分析了超声估计的胎儿体重（EFW）和 ABW。

结果

这些女性的年龄为 21-42 岁（平均 31.3 ± 7 岁）。Shepard 法的 EFW 为 1.9 公斤-5.0 公斤（平均 3.6 ± 0.5 公斤），Hadlock 法的 EFW 为 1.8 公斤-4.4 公斤（平均 3.3 ± 0.4 公斤），ABW 为 2.0 公斤-4.5 公斤（平均 3.4 ± 0.5 公斤）。Shepard 法的平均 EFW 明显高于 ABW（P < 0.001）。与 ABW 相比，Shepard 法显著高估了巨大儿的发生率。两种方法与 ABW 的小样儿发生率无显著差异。