Sonographic Correlation of Gestational Age with Umbilical Cord Diameter in Second and Third Trimester

Background: Commonly fetal parameter for gestational age (GA) assessment have pitfall mostly in progressive pregnancy and pregnancy complicated by fetal structure abnormality. Objective: Correlating of gestational age in the second and third trimesters with umbilical cord diameter. Methods: A cross-sectional sonographic study of 370 pregnant women with gestational age from 14 weeks to 40 weeks was done in Government Tehsil Headquarters Hospital Kahn a nau Lahore, Ferozpur Road, Lahore. The gestational age was first estimated using Naegele’s GA estimation formula based on the starting date of the last menstrual period of each subject. Fetal parameters like biparietal diameter, femur length, circumference of the head and abdominal circumference have been used to estimate gestational age. The umbilical cord diameter has been measured to find a correlation between gestation age and umbilical cord diameter. Results: The fetal parameters and umbilical cord diameter increase in the fetus as the gestational age increases. There seems to be a linear relationship and significant statistical correlation (p