ArticleBMC pregnancy and childbirth2026
Associated factors of fetal weight estimation accuracy by obstetric ultrasound among pregnant mothers admitted to labor ward of Dessie Comprehensive Specialized Hospital, East Amhara, Ethiopia.
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Abstract
introductionAssessment of fetal weight is a vital and universal component of antenatal care, essential not only for the management of labor and delivery but also for growth monitoring and the management of high-risk pregnancies. Consequently, several studies have simply compared the accuracy of clinical versus ultrasound methods of fetal weight estimation while ignoring technical factors such as the experience of the sonographer. Therefore, this study aimed to assess the accuracy of sonographic fetal weight estimation and its associated factors among pregnant mothers admitted to the labor ward of Dessie Comprehensive Specialized Hospital in East Amhara, Ethiopia.
methodsA facility-based cross-sectional study was conducted from January 1 to February 28, 2023, among 360 women who delivered at Dessie Comprehensive Specialized Hospital. Systematic random sampling was used to select study participants, and data were collected through maternal interviews and record reviews. The data were coded and entered using Epi-data version 4.6 software, then exported to SPSS version 26 for further statistical analysis. Both bivariable and multivariable logistic regression models were used to identify factors associated with the accuracy of sonographic fetal weight estimation. As a measure of association, the adjusted odds ratio (AOR) with a 95% confidence level was utilized; a P-value < 0.05 in the multivariable analysis was considered statistically significant.
resultResponses were obtained from 360 mothers (mean age 31.79 ± 6.98 years). The overall accuracy of sonographic fetal weight estimation (within ± 10% of actual birth weight) was 88.3%, while 80% of scans were accurate within ± 5%. The mean birth weight was 3171.67 g (SD ± 708). Multivariable analysis showed that accuracy was significantly higher for scans performed < 1 day before delivery (AOR = 5.11, 95% CI: 1.71, 15.22) and for scans conducted by gynecologists/obstetricians (AOR = 4.34, 95% CI: 1.51, 12.54) compared to second-year residents. Conversely, accuracy significantly decreased for low-birth-weight babies (AOR = 0.29, 95% CI: 0.13, 0.62).
conclusionGenerally, the percentage of accurate sonographic fetal weight estimations in this study was higher than that reported in the majority of Ethiopian research. However, further improvement is needed to increase the accuracy of weight estimations. To achieve this, it is recommended that scans be performed by the most experienced examiners and conducted near the time of childbirth.
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