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African Health Sciences
Makerere University Medical School
ISSN: 1680-6905 EISSN: 1680-6905
Vol. 15, No. 4, 2015, pp. 1112-1122
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Bioline Code: hs15155
Full paper language: English
Document type: Research Article
Document available free of charge
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African Health Sciences, Vol. 15, No. 4, 2015, pp. 1112-1122
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Correlation of ultrasonographic estimated fetal weight with actual birth weight in a tertiary hospital in Lagos, Nigeria.
Eze, Cletus Uche; Abonyi, Livinus Chibuzo; Njoku, Jerome; Okorie, Udo & Owonifari, Olayinka
Abstract
Background: Sonographic fetal weight estimation is an important component of antenatal care.
Aim: To sonographically estimate fetal weight at term and to compare estimated with actual birth weights to determine the
validity of estimated fetal weights.
Subjects and Methods: In the prospective study, a convenience sample of 282 women was recruited. Ethical approval and
informed consent of patients were obtained. An experienced sonographer estimated fetal weights by measuring BPD, HC,
AC and FL using a scanner with Hadlock 3 weight estimation model. Actual birth weights were measured with a Crown
weighing scale by a midwife. Data was analyzed with SPSS software version 17.0 while descriptive and inferential statistics
were used to interpret results. Results were tested at error level set at p≤ 0.05.
Results: Mean estimated and actual birth weights were 3378±40g and 3393±60g respectively. Difference between the two
means was not significant. Eleven percent of fetuses were sonographically estimated to be microsomic while 14.5% were
microsomic at birth; 12.1% were sonographically estimated to be macrosomic but 15.2% were macrosomic at birth. Most
macrosomic fetuses were delivered through cesarean section(CS) and fetal weights increased with maternal age and parity.
Conclusion: Sonographically estimated fetal weight using Hadlock 3 weight estimation model without validation correlated
positively with actual birth weight in a Nigerian population.
Keywords
Estimated fetal weight; actual birth weight; sonography; Nigeria
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