Estimation of Gestation Age by Fetus kidney length Using Ultrasonography

Abstract

Objective of this study to estimate the fetal gestational age by using renal length in age between 20-40 weeks, compare the measured fetus renal length value to the BPD, FL and HC and determine if renal length can be used correctly to estimated GA . The study is analytical prospective study, conducted in Yastabshroon private hospital to 60 pregnant women gestation age between 20-40 week, From July to September 2016. By using ultrasound machine (SAMSUNG MEDSION) curved linear transducer 3.5MHZ. any pregnant women comes for follow up antenatal ultrasound scan was asked about her LMP AND also be taken from follow up card for more conformation. If her LMP was known then the patient will be included in the study after verbal consent taken, her age, weight and length will also be taken., The exam was done by measuring BPD, HC, FL, and AC will be measure the GA, last measurement taken is right and left renal length in millimeters. The renal length is measure from longitudinal, sagittal section of the fetus the adrenal gland lying superior to the anterior pole of kidney was not included in the kidney length. The study showed there was significant correlation between RT and LT kidney length with gestation age (R2=0.823 R2=0.773) and (R=0.91, R=0.88)respectively. The result indicates that the kidney length in the present study correlated well with the assigned gestational age and found almost same as all the ultrasound biometric parameters put together