Abstract 6.  (1)4



Reliability of Ultrasonic fetal age determination in the third trimester of pregnancy


Eduwem, D. U.1, V. C. Ikamiase2, N. O. Egbe2, N. O. Chiaghanam2, & J. O. Azubuike2


1 Department of Radiology, University of Calabar Teaching Hospital, Calabar, Nigeria

2 Department of Radiography, College of Medical Sciences, University of Calabar, Calabar



Abstract: Five hundred (500) pregnant Nigerian women in their trimester were scanned and measurement of the femur length, bi-parietal diameter, and thoracic diameter of the fetus were taken and analyzed. The aim of this study was to test the strength of femur length, thoracic diameter, bi-parietal diameter and last menstrual period in the prediction of actual delivery date in third trimester. The results showed that femur length has 86% expected date of delivery to actual delivery date accuracy, while thoracic diameter, bi-parietal diameter and last menstrual period showed accuracy o f54%, 51% and 54% respectively. Femur length measurement is seen as the strongest and a reliable indicator of fetal age in third trimester.

Key words: Ultrasonography, Fetal age, Growth parameters, Third trimester of pregnancy.


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