Significance of oligohydramnios in preterm small-for-gestational-age infants for outcome at 18 months of age

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The aim of this study was to evaluate the association between oligohydramnios and other perinatal factors in preterm small-for-gestational-age (SGA) infants who had cerebral palsy at 18 months of age or who had died before this age.


This retrospective study included 320 infants with birthweights < 3rd percentile delivered between 22 and 33 complete weeks of gestation. We evaluated the incidence of CP at 18 months of age and of death before this age. The significant risk factors, including oligohydramnios, of CP or death of preterm SGA infants were evaluated by logistic regression analysis.


The incidence of CP or death was 47/320 (14.7%), consisting of 24/320 (7.5%) cases of CP and 23/320 (7.2%) cases of death. Oligohydramnios (adjusted odds ratio, 2.18; 95% confidence interval, 1.07–4.45) and gestational age (adjusted odds ratio, 0.76; 95% confidence interval, 0.66–0.87) were independently correlated with outcome.


The incidence of adverse outcomes was approximately 15% in preterm SGA infants. SGA infants born with oligohydramnios may be at increased risk for CP or death compared to those with normal amniotic volume.

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