Volume 17, Issue 1 (January 2019 2019)                   IJRM 2019, 17(1): 51-56 | Back to browse issues page

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Najdi N, Safi F, Hashemi-Dizaji S, Sahraian G, Jand Y. First trimester determination of fetal gender by ultrasonographic measurement of anogenital distance: A cross-sectional study. IJRM 2019; 17 (1) :51-56
URL: http://ijrm.ir/article-1-1380-en.html
1- Department of Gynecology and Obstetrics, School of Medicine, Arak University of Medical Sciences, Arak, Iran.
2- Department of Gynecology and Obstetrics, School of Medicine, Arak University of Medical Sciences, Arak, Iran
3- Department of Gynecology and Obstetrics, Shahid Akbarabadi Hospital, Faculty of Medicine, Iran University of Medical Sciences, Tehran, Iran , dr.shahrzad.hashemi.1@ gmail.com
4- Departement of Pharmacology, School of Medicine, Tehran University of Medical Science, Tehran, Iran.
Abstract:   (30833 Views)
Background: In some patients with a family history of the gender-linked disease, determination of the fetal gender in the first trimester of pregnancy is of importance. In X-linked recessive inherited diseases, only the male embryos are involved, while in some conditions, such as congenital adrenal hyperplasia, female embryos are affected; hence early determination of fetal gender is important.
Objective: The aim of the current study was to predict the gender of the fetus based on the accurate measurement of the fetal anogenital distance (AGD) by ultrasound in the first trimester.
Materials and Methods: To determine the AGD and crown-rump length in this cross-sectional study, 316 women with singleton pregnancies were exposed to ultrasonography. The results were then compared with definitive gender of the embryos after birth.
Results: The best cut-off for 11 wk to 11 wk, 6 days of pregnancy was 4.5 mm, for 12 wk to 12 wk, 6 days was 4.9 mm, and for 13 wk to 13 wk, 6 days was 4.8 mm.
Conclusion: AGD is helpful as an ultrasonographic marker that can determine fetal gender in the first trimester, especially after 12 wks.
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Type of Study: Original Article |

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