Abstract

Objective Fetal growth restriction (FGR) is the primary cause of infant morbidity and mortality. Although nutritional intervention is generally used to cure FGR, its effects on early- and late-onset FGR have not been reported. This study aimed to resolve this issue in a real-world setting. Study design We collected the data of pregnant women whose fetuses were diagnosed with FGR and subsequently born at Nanshan Women and Children’s Care Hospital in Shenzhen, China. We conducted a MANOVA and series of Cox regression analyses to evaluate the effects of a prenatal nutritional intervention on early and late FGR after adjusting for potential confounders. Results Our results demonstrated that the average birth weights in the four sub-intervention groups were 50.36–160.05 g higher than those in the nonintervention group. These differences were insignificant with respect to early-onset FGR. In late-onset FGR, however, the interventions led to birth weight increases of 164.95–244.45 g greater than those in the nonintervention group, and these differences were significant. During early-onset FGR, four different nutritional interventions reduced the incidence of small-for-gestational age by 8.00–13.76% relative to the incidence in the nonintervention group, while in late-onset FGR, the incidence decreased by 11.37–17.39%. Conclusions Our results based on a real-world setting reaffirmed that a prenatal nutritional intervention could improve the birth outcomes in cases of FGR and further suggested a better effectiveness on late-onset FGR.

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