Respiratory outcome in preterm small for gestational age fetuses with or without abnormal umbilical artery Doppler and/or maternal hypertension

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Abstract
Objective. To study respiratory outcome in preterm small for gestational age (SGA) fetuses with or without signs of intrauterine growth restriction due to placental insufficiency, and with or without maternal hypertension. Methods. This was a retrospective study of 187 neonates with birth weight th percentile and gestational age Results. No significant difference in respiratory outcome between SGA fetuses with normal (SGA-N) or abnormal (SGA-A) umbilical artery Doppler examination was found. Within the SGA-A group, the respiratory distress syndrome (RDS) incidence (OR 5.6, 95% CI 1.7–18.3), RDS grade (OR 6.7, 95% CI 1.2–38.5), and need for surfactant (OR 5.3, 95% CI 1.1–24.4) were higher in infants of women with hemolysis, elevated liver enzymes, low platelets (HELLP) syndrome as compared to those of normotensive mothers. Conclusions. Lung maturation is not accelerated with placental insufficiency. SGA-A fetuses of mothers with HELLP syndrome have a significantly poorer respiratory outcome than those with healthy mothers. Possibly, fetuses of mothers with HELLP syndrome are subjected to ‘oxidative stress’ causing lung damage rather than lung maturation.

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