Correlation of Ultrasonographic Estimated Placental Thickness with Gestational Age and Fetal Weight in Late Second and Third Trimester

Abstract

Background: The aim of this study was to findout relationship of placental thickness, measured at the level of the umbilical cord insertion, with ultrasonographic estimated gestational age and fetal weight in late second and third trimester of pregnancy. Methods: A total of 450 pregnant females (24th to 39th weeks of pregnancy) ultrasound were observed over a period of one year. Placental thickness was measured at the level of umbilical cord insertion. They were divided into two groups for data analysis, Group A (outcome fetal weight < 2500 gms, n=102) and Group B (outcome fetal weight ? 2500 gms, n=348). The mean values of placental thickness were calculated and the birth weight of newborns were also noted. Results: After statistical analysis of data, a positive correlation was observed between placental thickness and ultrasonographic gestational age in both group. The placental thickness was found to be lower in newborns having birth weight less than 2500gms. Conclusion: Placental thickness can be used as a predictor of the gestational age and fetal weight outcome and it acts like a mirror, reflecting the statuses of both the mother and the foetus. So, the placental thickness should be observed routinely during the late stages of obstetric ultrasound.