Perinatal Outcomes of Small for Gestational Age in Twin Pregnancies: Twin vs. Singleton Charts

Twin pregnancies are commonly assessed using singleton growth and birth weight reference charts. This practice has led to a significant number of twins labelled as small for gestational age (SGA), causing unnecessary interventions increased risk iatrogenic preterm birth. However, the use twin-specific charts remains controversial. study aims assess whether estimated fetal (EFW) (BW) more predictive adverse outcomes compared Centiles EFW BW were calculated previously published twin Categorical data Chi-square or McNemar tests. The included 1740 pregnancies, with following perinatal recorded: death, <34 weeks, hypertensive disorders pregnancy (HDP) admissions neonatal unit (NNU). Twin-specific identified prenatally postnatally smaller proportion infants SGA showed higher percentage in than For example, death (SGA 7.2% vs. appropriate (AGA) 2%, p < 0.0001), weeks 42.1% AGA 16.4%, HDP 21.2% 13.5%, = 0.015) NNU 69% 24%, when (perinatal death: 2% 1%, 0.029), weeks: 20.6% 17.4%, 0.020), admission: 34.5% 23.9%, 0.000). There was no association between (p 0.696). In infants, according charts, incidence abnormal umbilical artery Doppler significantly common chart (27.0% 8.1%, 0.001). conclusion, misclassify large at restriction. evidence suggests that could reduce medical postnatally.