Relationship between the thickness of the placenta with gestational age and biometric indicators on ultrasound at Tam Anh General Hospital 2019 - 2020

Đinh Thị Hiền Lê , Phạm Thị Anh, Nguyễn Hữu Công, Nguyễn Thị Hồng Nhung, Cao Thị Thuý Hà, Đỗ Duy Anh

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Abstract

Placenta thickness (PT) is an indicator that can evaluate placenta function, but there is little knowledge about normal placenta thickness. The purpose of this study is to determine  placental thickness andis to find out the relationship between the thickness of the placenta with gestational age as well as biometric indicators measured on ultrasound in the second trimester. Data was collected on 385 patients, at the Department of Obstetrics and Gynecology of Tam Anh General Hospital from June 2019 to September 2020. We found that the average placental thickness measured on ultrasound in the second trimester is: 21.15 ± 4.11 mm (13-33 mm) and  that there is a linear relationship between placental thickness and mean gestational age. The thickness of placenta increases proportionally with gestational age, with RR = 0.387. When gestational age increases by  1 unit (1 week), the thickness of placenta increases approximately 1mm (= 1.013 mm). The study also showed a strong positive correlation between placental thickness and fetal biometric indicators comprising dipole diameter, abdominal circumference, and femoral length.

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References

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