Evaluation of Placental Thickness as an Ultrasonographic Parameter for Estimating Gestational Age of the Fetus in 2nd and 3rd Trimesters
Journal Title: International Journal of Contemporary Medicine surgery and Radiology - Year 2018, Vol 3, Issue 1
Abstract
Introduction: Accurate estimation of Gestational age (GA) is important in assessing the growth of fetus and plan for delivery. We assessed the role of placental thickness (PT) in estimating the GA and the growth pattern of placenta. Material and Methods: This observational, study measured PT ultrasonographically in pregnant women with GA of 13-40 weeks. Patients were grouped into Group I (Anterior and lateral placentas combined) and Group II (Posterior and fundal placentas combined). Result: Pregnant women (150), mean age of 24.2 years (range 18-33yrs) were included. Sixteen (10.66%) patients were in 21 weeks, 12 in 20 weeks and 32 weeks each and 10 in 22 weeks of pregnancy. Anterior placenta was noted in 36.7%, followed by fundal (23.3%) and posterior (22.0%) placement. PT gradually increased from 13.2mm (13 weeks) to 36.5mm at 40 weeks of gestation, almost matched GA from 13-35 weeks, lowered by 1-4mm from 36-40 weeks of gestation. At no stage of pregnancy was the normal placenta > 38mm. There was a linear relationship between PT and GA, with slight increased variations in 30-31 weeks of gestation. Conclusion: There is a linear and direct relationship between PT and GA. PT can be an important additional parameter for estimating GA, especially from 13-35 weeks of gestation and when the duration of the pregnancy is unknown or uncertain.
Authors and Affiliations
Praful Kumar Kakumanu, Chandrasekhar Kondragunta, Nayantara Rao Gandra, Haritha Yepuri
Keywords
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