DOI: http://dx.doi.org/10.18203/2320-1770.ijrcog20204821

Placental thickness as a sonographic biomarker for gestational age among singleton pregnancies

Gokul Reshmi Mariappan, Hiremath B. Panchaksharayya, Govardhanan R.

Abstract


Background: The aim of the study was to exploring the application of placental thickness as a sonographic marker for determining gestational age among singleton pregnant mothers.

Methods: This longitudinal, observational study was conducted in obstetrics and gynecology department and department of Radiology, Sri Venkateshwaraa Medical College and Hospital, Ariyur, Puducherry, in antenatal mothers of 11-40 weeks of gestation from 2018 to 2019. The study included 278 normal singleton pregnant women. The details regarding the socio-demographic variables, relevant clinical history and examination, laboratory investigations and ultrasound report containing gestational age, placental thickness measured at the level of cord insertion were documented in a proforma. The sonographic measurements were made using a grey scale real time ultrasound machine Siemens ACUSON x400 with a convex 2-5 mhz probe.

Results: The study included 278 pregnant women with a mean age of 25.8±44 years. Majority of them were home makers (n=155, 55.7%) and educated (n=257, 92.4%) and primigravida

(n=117, 57.9%).The position of the placenta in majority of the participants was posterior placed (71.6%). The mean gestational age of the studied antenatal women was 28.3±7.2 weeks as per ultrasonogram. Majority of the participants were younger aged between 20 to 30 years of age and very few teenage pregnancies. There was a significant correlation between the gestational age and placental thickness (p<0.001). There was a significant (p<0.001) correlation between placental thickness and femur length (r=0.972).

Conclusions: The placental thickness showed significant positive correlation with the gestational age as measured by ultrasonogram. Hence it can be used as a parameter in determining the gestational age.


Keywords


Gestational age, Placental thickness, Sonographic marker

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References


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