Comparison of automated vs. manual measurement to estimate fetal weight in isolated polyhydramnios
-
Hasan Eroglu
,
Emine Avcı
Abstract
Objective
To understand the impact of the measurement method to predict actual birthweight in pregnancies complicated with isolated polyhydramnios in the third trimester.
Methods
A prospective study was conducted with 60 pregnant women between the 37th and 40th weeks of gestation. Routine biometric measurements were obtained by two-dimensional (2D) ultrasonography. When a satisfactory image was obtained, the image was frozen to get two measurements. First, calipers were placed to get the manual measurement. Then automated measurement was captured by the ultrasonography machine in the same image. The fetal weight was estimated by using the Hadlock II formula.
Results
The mean difference was found to be 0.03, −0.77, −0.02 and 0.17 for biparietal diameter (BPD), head circumference (HC), abdominal circumference (AC) and femur length (FL), respectively. Pearson’s correlation coefficient between automated and manual estimated fetal weights (EFWs) and the actual birthweight was 0.919 and 0.796, respectively. The mean difference between actual and manual EFW measurement values was 46.16 ± 363.81 g (range between −745 g and 685 g) (P = 0.330). Also, the mean difference between actual and automated EFW measurement values was found to be 31.98 ± 218.65 g (range between −378 g and 742 g) (P = 0.262). The Bland-Altman test results have shown that, 666 g lower or 759 g higher values were obtained when the measurement was performed manually. On the other hand, EFW results were 396 g lower or 460 g higher than the actual birthweight with automated measurement tools.
Conclusion
The accuracy rate of fetal weight estimation with ultrasonography is high for both automated and manual measurements. Automated tools have a higher success to predict the EFW.
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Employment or leadership: None declared.
Honorarium: None declared.
Competing interests: The funding organization(s) played no role in the study design; in the collection, analysis, and interpretation of data; in the writing of the report; or in the decision to submit the report for publication.
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Supplementary Material
The online version of this article offers supplementary material (https://doi.org/10.1515/jpm-2019-0083).
©2019 Walter de Gruyter GmbH, Berlin/Boston
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Articles in the same Issue
- Frontmatter
- Review
- Placenta previa and the risk of intrauterine growth restriction (IUGR): a systematic review and meta-analysis
- Research Articles – Obstetrics
- Total gestational weight gain and the risk of preeclampsia by pre-pregnancy body mass index categories: a population-based cohort study from 2013 to 2017
- Comparison of automated vs. manual measurement to estimate fetal weight in isolated polyhydramnios
- Strain and dyssynchrony in fetuses with congenital heart disease compared to normal controls using speckle tracking echocardiography (STE)
- Maternal abdominal subcutaneous fat thickness as a simple predictor for gestational diabetes mellitus
- Pregnancy outcome following bacteriuria in pregnancy and the significance of nitrites in urinalysis – a retrospective cohort study
- Nearly half of all severe fetal anomalies can be detected by first-trimester screening in experts’ hands
- Effect of maternal obesity on pregnancy outcomes in women delivering singleton babies: a historical cohort study
- Comparison of quantitative fluorescent polymerase chain reaction and karyotype analysis for prenatal screening of chromosomal aneuploidies in 270 amniotic fluid samples
- Effect of Sjögren’s syndrome on maternal and neonatal outcomes of pregnancy
- Intrapartum prediction of birth weight with a simplified algorithmic approach derived from maternal characteristics
- Efficacy of copy-number variation sequencing technology in prenatal diagnosis
- Socio-cultural and clinician determinants in the maternal decision-making process in the choice for trial of labor vs. elective repeated cesarean section: a questionnaire comparison between Italian settings
- Research Articles – Newborn
- Tidal volume monitoring during initial resuscitation of extremely prematurely born infants
- The level of extracellular superoxide dismutase in the first week of life in very and extremely low birth weight infants and the risk of developing bronchopulmonary dysplasia
- Effect of gender on growth-restricted fetuses born preterm
- Letters to the Editor
- Dermal bilirubin kinetics during phototherapy in term neonates
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