Accuracy of Transcerebellar Diameter at the Third Trimester in Estimating the Gestational Age in Singleton Pregnancy
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- Category: Vol. 82, December 2014
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Accuracy of Transcerebellar Diameter at the Third Trimester in Estimating the Gestational Age in Singleton Pregnancy, SHERIF A. AKL, MOHAMMED ELMANDOUH MOHAMMED, AHMED M. BAHAA EL-DIN and AHMED A. MOHAMMED
Abstract
Objective: The aim of the current study was to evaluate the accuracy of fetal transcerebellar diameter (TCD) in esti-mating the gestational age at the third trimester of pregnancy.
Methods: The current diagnostic test accuracy study was conducted at the Special Care Center for the Fetus at Ain Shams University Maternity Hospital during the period be-tween September 2011 and December 2012. The study included singleton pregnant women, during their last trimester (at gestations between 28 and 41 weeks). Transabdominal ultra-sonography was performed to all included women for mea-suring the biparietal diameter (BPD), femur length (FL) and TCD.
Results: A total of 150 women were included in the current study. The mean gestational age was 35.17±3.56 weeks (range: 28-41 weeks). Bland-Altman analysis of agreement showed a non-significant difference between gestational age estimated by last menstrual period (LMP)/crown-to-rump length (CRL) and the estimated gestational age using each of TCD and BPD and/or FL, in all included women, and when analysis was split above and below 36 weeks of gestation.
Conclusion: TCD seems to be as accurate as BPD and FL in estimating the gestational age in both term and preterm late pregnancy.