Which of the following parameter gives accurate assessment of Gestational Age?
Best parameters for estimation of fetal age FIRST TRIMESTER : CROWN RUMP LENGTH SECOND TRIMESTER : BIPARIETAL DIAMETER THIRD TRIMESTER : FEMUR LENGTH OVERALL : CROWN RUMP LENGTH BPD is measured in the trans thalamic view at the level of the thalami and cavum septum pellucidum. Cephalic index = BPD divided by occipito frontal diameter (OFD) CI = BPD/ OFD. If head shape is flattened (dolichocephaly) or rounded (brachycephaly), then HC is more reliable than BPD. USG in Pregnancy Best time to assess gestational age by USG is 9-12 weeks (by Crown rump length). Best indicator of fetal growth - Abdominal circumference. So the best USG parameter to detect IUGR is Abdominal circumference. The best USG parameter to detect Macrosomia is Abdominal circumference.
Biparietal Diameter
Abdominal Circumference
Femur Length
Crown Rump Length
ULTRASOUND