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Comparison of Fetal Growth Patterns from Western India with Intergrowth-21st

Abstract

Objective: To generate longitudinal fetal growth data in an Indian population and compare it with Intergrowth-21st.

Material And Methods: Fetal biometry data was collected in a prospective longitudinal observational study (REVAMP: Research Exploring Various Aspects and Mechanisms in Preeclampsia) from 2017 to 2022. Fetal crown-rump length (CRL) was measured at 11-14 weeks gestation, and biparietal diameter (BPD), head circumference (HC), abdominal circumference (AC), and femur length (FL) at 18-22 and 32-35 weeks, and converted into Z-scores using the Intergrowth standard. Generalized Additive Models for Location, Scale and Shape (GAMLSS) models were used to construct fetal growth centile curves compared against Intergrowth centiles.

Results: Out of 1096 singleton pregnancies in REVAMP, this analysis included 655 'healthy' pregnancies (uncomplicated by pre-eclampsia, diabetes, pre-term delivery or low birth weight) and a sub-set of 106 'low-risk' pregnancies defined using Intergrowth criteria. The 'healthy' study subjects showed lower mean CRL Z-score [-0.45 SD (95% CI:-0.54,-0.37)] at 11-14 weeks, and BPD Z-score [-1.2 SD (-1.28,-1.11) and -1.17 SD (-1.23,-1.1)] at 18-22 and 32-35 weeks respectively. Mean HC Z-score was comparable to the Intergrowth standard at 18-22 weeks [-0.08 SD (-0.16, 0.02)] but smaller at 32-35 weeks [-0.25 SD (-0.32,-0.19)]. Mean AC Z-score was lower at 18-22 weeks [-0.32 SD (-0.41,-0.23)] but comparable at 32-35 weeks [0.004 SD (-0.07, 0.07)]. FL was comparable to or larger than the Intergrowth standard at both time points [0.05 SD (-0.05, 0.14); 0.82 SD (0.75, 0.89), respectively]. These findings were similar, though measurements were slightly larger, in the 'low-risk' sample.

Conclusions: This data from healthy and low-risk pregnant women in urban western India indicates that some fetal dimensions and growth trajectories differ significantly from the Intergrowth-21st. Our data suggest the need for a larger representative study to define a population-specific fetal growth reference for India, for identification of fetal growth restriction.

References
1.
Aggarwal N, Sharma G . Fetal ultrasound parameters: Reference values for a local perspective. Indian J Radiol Imaging. 2020; 30(2):149-155. PMC: 7546290. DOI: 10.4103/ijri.IJRI_287_19. View

2.
Stirnemann J, Villar J, Salomon L, Ohuma E, Ruyan P, Altman D . International estimated fetal weight standards of the INTERGROWTH-21 Project. Ultrasound Obstet Gynecol. 2016; 49(4):478-486. PMC: 5516164. DOI: 10.1002/uog.17347. View

3.
Gluckman P, Hanson M, Cooper C, Thornburg K . Effect of in utero and early-life conditions on adult health and disease. N Engl J Med. 2008; 359(1):61-73. PMC: 3923653. DOI: 10.1056/NEJMra0708473. View

4.
Buck Louis G, Grewal J, Albert P, Sciscione A, Wing D, Grobman W . Racial/ethnic standards for fetal growth: the NICHD Fetal Growth Studies. Am J Obstet Gynecol. 2015; 213(4):449.e1-449.e41. PMC: 4584427. DOI: 10.1016/j.ajog.2015.08.032. View

5.
Lewandowska M . Maternal Obesity and Risk of Low Birth Weight, Fetal Growth Restriction, and Macrosomia: Multiple Analyses. Nutrients. 2021; 13(4). PMC: 8067544. DOI: 10.3390/nu13041213. View