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Giornale Italiano di ostetricia e ginecologia

Placental thickness and its correlation with gestational age and foetal growth parameters

Original Article, 33 - 41
doi: 10.11138/giog/2018.40.1.033
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Introduction. Placenta influences foetal birth weight and it is thought that abnormalities in placental growth precede abnormalities in foetal growth.
Methods. 225 antenatal women between 12 to 40 weeks of gestation with known LMP, which had been confirmed by first trimester ultrasound, had an ultrasound and BPD, HC, AC and FL were measured according to the standard protocols. Placental thickness in cm was measured.
Gestational age was computed by the ultrasound machine based on Hadlock tables by using regression equations from combination of measurements (computation software package). The Correlation and regression analysis was carried out to quantify the relationship between the gestational age in weeks, growth parameters and Placental thickness in cm in all patients.
Results. Total number of subjects analyzed were 225. The range for thickness of placenta measured was 1.3 - 3.9 cm and the mean placental thickness was 2.748 cm. When the placental thickness of the entire study population was compared with the gestational age, a coefficient of correlation (r) = 0.972 was obtained which was statistically significant [p< 0.001].
Conclusion. Placental thickness correlated well with foetal biometric parameters routinely used in antenatal ultrasound.