Comparative study between placental thickness and Femur Length for estimation of gestational age of fetus by real time ultrasonographic measurement.

Natwar  Lal Agrawal

Volume : V, Issue : XII, December - 2015

Comparative study between placental thickness and Femur Length for estimation of gestational age of fetus by real time ultrasonographic measurement.

Natwar Lal Agrawal

Abstract :

Aim: This study aimed to establish a relationship between placental thickness and Femur Length by real time ultrasound for estimation of gestational age of fetus. Materials & Methods : This study consists of 100 pregnant females, between 13th to 39th weeks gestation with their age ranging from 18 –35 years, attending antenatal clinic at the department of Obstetrics and gynecology, Pt..J.N.M. Medical College & Dr. B.R. Ambedkar Memorial Hospital Raipur (C.G.) from October 2008 to august 2009. Who were sure for the last menstrual period and fulfilling all criteria for selection of cases.USG was done for estimating fetal age by Femur Length (FL) and placental thickness (PT).The femur Length measured sonographicaly from the greater trochanter above to the lateral condoyle below. The PT was measured perpendicular to the basal and chorionic plates, in the mid portion of the placenta at the level of insertion of umbilical cord. Results: It was observed that the coefficient of correlation (r) between PT and FL being at 26–30 weeks r = .998 ( p = .000), and at 31–35 weeks r = .985 ( p = .002) which is statistically significant but at more than >35 weeks it become less significant. Conclusion: The study concluded a fairly linear relationship between PT and FL and it provide accurate parameter for estimating fetal gestational age especially in the late mid trimester and early third trimester, where the exact duration of pregnancy is not known.