TO CORRELATE PLACENTAL THICKNESS WITH OTHER FETAL PARAMETER ON USG IN SECOND AND THIRD TRIMESTER OF PREGNANCY

Background: Gestational age is estimated by last menstrual period. Many women are unaware of their last menstrual period due to irregular menses, conception in lactation amenorrhea and due to illiteracy. The best possible ante partum care and successful labor outcome always revolve around the accurate knowledge of gestational age determination, and is an important component of antenatal care Methods: This was a prospective observational study conducted in department of obstetrics and gynecology on 200 pregnant women in second and third trimester with singleton live fetus at Mahila chikitsalay, S.M.S. medical college, Jaipur, from June 2018 to December 2019. All women were subjected to USG for estimation of gestational age by placental thickness (measured at the level of umbilical cord insertion). Results: Mean placental thickness show linear positive correlation with head circumference (HC). (r=0.960, p<0.0001).Mean placental thickness show linear positive correlation with abdominal circumference (AC). (r=0.948,p<0.0001). Mean placental thickness show positive correlation with FL both have linear correlation(r=0.946,<0.0001). Mean placental thickness show linear positive correlation with estimated fetal weight (EFW). (r=0.926,p<0.0001) Conclusion: All fetal parameter FL, HC, EFW, BPD, AC and gestational age showing positive correlation with placental thickness. All parameter have linear relationship with placental thickness. Correlation may be different with different type of parameter. Keywords: Ultrasonography (USG), Placental thickness, Gestation age.