Assessment of fetal gestational age in different trimesters from ultrasonographic measurements of various fetal biometric parameters

Babuta, Sumit; Chauhan, Sangita; Garg, Rohin; Bagarhatta, Meenu

doi:10.1016/s0003-2778(13)80011-1

Cited by 18 publications

(22 citation statements)

References 17 publications

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“…Accurate gestational age estimation is one of the most important functions of antenatal ultrasonography. Different studies have shown that fetal head circumference measurement is one of the reliable and valid parameter for fetal age estimation, [4,5,17,20] As seen in [ Table 5], there was difference in mean values of head circumference in present study and that of the other study findings.…”

Section: Discussioncontrasting

confidence: 43%

“…In comparison with values of present study and Hadlock's and other study values, the observed difference was more with advancing gestational age. In local area, the reference values for assessment of gestational age and fetal well-being are reported by following the measurements by Hadlock et al, but however, there are more chances of over-diagnosis of intra-uterine growth retardation and wrong prediction of expected date of delivery especially at advancing gestational age The head circumference value at 25 weeks in this Section: Anatomy study was 22.92 cm while that in other studies it was found to be 23.54 cm, [20] 23.5 cm, [12] 23.6 cm, [4] 22.71 cm, [17] 23.95 cm, [19] and at 37 weeks it was 31.71 cm in the present study, while in other similar studies, it was 33.33 cm, [20] 32.2 cm, [12] 33.12 cm, [4] 31.95 cm, [17] 31.94 cm, [19] etc. Hence, we need to have reference tables prepared on our local population for accurate and reliable estimation of gestational age and for determination of fetal head growth and also for accurate diagnosis of overall fetal growth and well-being.…”

Section: Discussionmentioning

confidence: 56%

“…[ Figure 2] shows box plot of the mean, first quartile, third quartile and extreme measurements of head circumference for each gestational week from 20 to 38 weeks of gestation by LMP in study subjects. [20] Acharya [12] Usha Jeswar [4] Sumit Babuta [17] Pakistan [19]…”

Section: Figure 1: Graph Showing the Percentile Values Of Hc Measuremmentioning

confidence: 99%

“…[4,[12][13][14][15][16] Use of charts derived from a different population may lead to errors in diagnosis of gestational age and overdiagnosis of intrauterine growth restriction, over or under estimation of gestational age and expected date of delivery. [17] Hence, each particular population or ethnic group should have their own reference tables for the different fetal anthropometrical variables in order to provide the most accurate fetal assessment. Therefore, the present study was designed to determine the relationship between fetal head circumference (HC) and gestational age with + 2 SD and to form a reference [18] for at least 3 cycles before conception, with delivery of a live baby with birth weight more than or equal to 2500 grams, fundal height corresponding to duration of pregnancy as per obstetricians finding, who delivered within one week of the expected date of delivery (EDD) and who delivered a newborn baby without any congenital abnormality were included in the study for analysis.…”

Section: Introductionmentioning

confidence: 99%

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Gestational Age Estimation by Ultrasonographic Measurements of Fetal Head Circumference in Local Population, Karnataka, India

Viveki¹,

Shirol²

2018

AIMDR

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Background: Fetal head circumference (HC) is an important and most reliable individual parameter, which can be used not only for determining fetal age, but also fetal growth and the type of growth restriction-symmetrical or asymmetrical. Objectives: 1) To establish a reference table for fetal head circumference in normal pregnant women from 20 to 38 weeks of gestation from Belagavi District, Karnataka,India 2) To find out the predictive accuracy of gestational age determined by fetal head circumference with gestational age determined by Last menstrual period (LMP) method. Methods: The data was collected by using predesigned pretested questionnaire from September 2016 to January 2018. Total 768 singleton pregnant women with minimum 30 cases for each gestational week from 20 to 38 weeks of gestation, fulfilling inclusion and exclusion criteria were studied. Statistical Analysis: The data was analyzed using Statistical Package for Social Sciences (SPSS) version 20. Percentages, Mean, Standard Deviation and range, standard error, percentiles and regression equation etc. were performed for head circumference for each gestational week. Results: The regression equation derived was GA =-0.254 + (1.130 X HC in cm). By this regression equation, the accuracy in prediction of gestational age by head circumference measurement was ranging from 99.27% at 23 weeks to 92.64% at 38 weeks of gestation. The observed difference in mean HC values in present study and that of Hadlock's was 0.09 cm at 20 weeks of gestation which went on increasing with advancing gestational age-0.69 cm, 1.36 cm, 1.62 cm and 2.09 cm at 30, 35, 36 and 38 weeks of gestation respectively, which was statistically significant. Conclusion: The present study findings confirmed that the fetal head circumference measurements significantly vary among different population groups due to genetic, racial, and ethnic factors. So generation of population specific reference tables and regression equations for various fetal biometric parameters by a large scale study at national level is required for more precise reporting of gestational age and Expected date of delivery (EDD) by ultrasonography.

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Section: Discussioncontrasting

confidence: 43%

Section: Discussionmentioning

confidence: 56%

Section: Figure 1: Graph Showing the Percentile Values Of Hc Measuremmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Gestational Age Estimation by Ultrasonographic Measurements of Fetal Head Circumference in Local Population, Karnataka, India

Viveki¹,

Shirol²

2018

AIMDR

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“…A total of four thousand five hundred and ninety five cases were examined by ultrasound. Maximum cases were in the 29 to 34 weeks of gestation (Table No. 1). 4056 cases were in the age group of 18 -30 years and 295 cases were in the 31 -35 years' age group.…”

Section: Resultsmentioning

confidence: 96%

Foetal Measurements From 15th to 38th Week in 4595 Gravid Females in and Around Lucknow

Gupta¹,

Gupta²,

Saxena³

et al. 2018

jemds

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BACKGROUND Foetal biometry is very informative. Patients have become very vigilant about the well-being of the foetus and are now comparing the ultrasound reports with their previous reports and with those on the net. Low measurements create panic in the family of the mother and for the mother also. Aims and Objectives-To study a large number of gravid females to know if Indian foetuses are smaller in anyway than those in western countries. MATERIALS AND METHODS This is an observational study. Healthy pregnant ladies with a single live foetus were selected for the study. 4595 cases were selected and they were examined for BPD, HC, AC, FL and foetal weight by a single observer on a single machine. RESULTS All parameters were measured in 4595 pregnant females from 18 years to 35 years age for BPD, HC, AC, FL and foetal weight. It was observed that our measurements were in no way less than those of other countries and were comparable with those of Hadlock et al. CONCLUSION All our values were slightly more than those of other authors in the early weeks of gestation, but as pregnancy advanced our measurements were nearly the same as those of other authors.

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Evaluation of fetal kidney length as a marker for fetal biometry

Choudhary,

Sibia,

Kaur

et al. 2024

Arch Gynecol Obstet

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Assessment of fetal gestational age in different trimesters from ultrasonographic measurements of various fetal biometric parameters

Cited by 18 publications

References 17 publications

Gestational Age Estimation by Ultrasonographic Measurements of Fetal Head Circumference in Local Population, Karnataka, India

Gestational Age Estimation by Ultrasonographic Measurements of Fetal Head Circumference in Local Population, Karnataka, India

Foetal Measurements From 15th to 38th Week in 4595 Gravid Females in and Around Lucknow

Evaluation of fetal kidney length as a marker for fetal biometry

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