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Antenatal fetal age estimation by measuring Crown-Rump Length, Bi-Parietal Diameter and Femur Length
- Author Details:
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Sarita Kumari
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Padamjeet Panchal
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Bheem Prasad
Introduction: The gestational age estimation is an essential part of the care and management of pregnant women. A number of methods have been used for fetal dating and ultrasonography have become as an integral part of Obstetrics. Objective of this study is to determine whether Ultrasonography (USG) based Expected date of delivery (EDD) is better or Last menstrual period (LMP) based EDD.
Materials and Method: This study was done on randomly selected 50 pregnant women. Cases were selected from those attending antenatal clinic, labour room, Indoor and outdoor of the Department of Obstetrics and Gynaecology, at medical college and hospital Kolkata. The parameters like Crown-Rump Length (CRL), Bi-parietal Diameter (BPD), and Femur Length (FL) were used to determine Gestational Age (GA) during 1st, 2nd and 3rd trimester with help of USG.
Result: The CRL was better parameter to determine GA in first trimester and BPD and FL was better parameters to determine GA in second and third trimester for gestational age estimation. The CRL, BPD and FL parameters together give the best assessment of GA in Uterus.
Conclusion: USG is a better diagnostic tool for estimation of EDD than the LMP method.
Keywords: Bi-parietal Diameter, Crown-Rump Length, Femur Length, Gestational age, Pregnancy, Ultrasonography
References
- Robinson H P and Flemmig J E E. A critical evaluation of sonar crown-rump-length measurement. Br. J. Obstet. Gynecol. 1975;82:702-10.
- McConnon T M and Bowman W P. Use of ultrasonography vs clinical factor to estimate date of confinement J. Farm Pract. 1985;21(1):45-8.
- Kramer M S, Melean F H, Boyd M E and Usha R H. The validity of gestational age estimation by menstrual dating in terms, preterms postterm gestational JAMA 1988;9:260(22):3306-8.
- Verburg B O, Steegers E A, De Ridder M, Snijders R J, Smith E, Hofman A, Moll H A, Jaddoe V W and Witteman J C. New charts for ultrasound dating of pregnancy and assessment of fetal growth : longitudinal data from a population based cohort study. Ultrasound Obstet Gynecol. 2008;31(4):388-96.
- Backe B and Nakling J. Term prediction in routine ultrasound practice. Actaobstet. Gynaecol Scan. 1994;73(2):113-8.
- Kalish R B, Thaler H T, Chasen S T, Gupta M, Berman S J, Rosenwaks Z and Chervenak F A. First and second trimester ultrasound assessment of gestational age. Am J Obstet Gynecol. 2004;3(3):975–8.
- MacGregor S N, Tamura R K, Sabbagha R E, Minogue J P, Gibson M E and Hoffman D I. Underestimation of gestational age by conventional crown-rump length dating curves. Obstet Gynecol. 1987;13(3):344–8.
- O‟Brien, W F, Coddington C C, and Cefalo R C. Serial ultrasonographic BPD for prediction of estimated date of confinement. Am. J. Obstet. Gynecol. 1980;138:467.
- Savitz D A, Terry J W Jr, Dole N, Thorp J M Jr, Siega- Riz A M and Herring A H. Comparison of pregnancy dating by last menstrual period, ultrasound scanning, and their combination. Am J Obstet Gynecol. 2002;13(6):1660–6.
- Sahota D S, Leung T Y, Leung T N, Chan O K and Lau T K. Fetal crown-rump length and estimation of gestational age in an ethnic Chinese population. Ultrasound Obstet Gynecol. 2009;13(2):157–160.
How to Cite This Article
Vancouver
Kumari S, Panchal P, Prasad B. Antenatal fetal age estimation by measuring Crown-Rump Length, Bi-Parietal Diameter and Femur Length [Internet]. Indian J Clin Anat Physiol. 2017 [cited 2025 Oct 28];4(2):208-211. Available from: https://doi.org/
APA
Kumari, S., Panchal, P., Prasad, B. (2017). Antenatal fetal age estimation by measuring Crown-Rump Length, Bi-Parietal Diameter and Femur Length. Indian J Clin Anat Physiol, 4(2), 208-211. https://doi.org/
MLA
Kumari, Sarita, Panchal, Padamjeet, Prasad, Bheem. "Antenatal fetal age estimation by measuring Crown-Rump Length, Bi-Parietal Diameter and Femur Length." Indian J Clin Anat Physiol, vol. 4, no. 2, 2017, pp. 208-211. https://doi.org/
Chicago
Kumari, S., Panchal, P., Prasad, B.. "Antenatal fetal age estimation by measuring Crown-Rump Length, Bi-Parietal Diameter and Femur Length." Indian J Clin Anat Physiol 4, no. 2 (2017): 208-211. https://doi.org/