OP01.09: Perinatal outcomes in gestations with intrauterine growth restriction and small for gestational age foetuses, admitted to neonatal unit

To compare perinatal outcomes between those gestations with intrauterine growth restriction or with small for gestational age foetuses. We included all foetuses with an estimated fetal weight (EFW) below 10 percentile which needed to be admitted to neonatal unit from January 2008 to December 2009 (87 foetuses). 71 of these 87 gestations were complicated with intrauterine growth restricted (IUGR, EFW < 3 percentile or < 10 percentile with Doppler alterations) and 16 with small for gestational age (SGA, EFW < 10 percentile but > 3 percentile without Doppler alterations). We followed up the immediate postnatal complications. Almost significant differences (p:0.06) were found in gestations complicated with hypertension (23% IUGR vs. 2% SGA). We observed significant differences (p:0.04) in prenatal non-reassuring fetal heart rate status (32% IUGR vs. 2% SGA) and in Caesarean section rate (P < 0.05) (57% IUGR vs. 10% SGA). We didn't find significant differences referring to gestational age at diagnostic (33 weeks for IUGR and SGA), to gestational age at birth (35 weeks for IUGR and SGA), birth weight, Apgar score or umbilical artery pH. In IUGR group the first cause of admission was low weight (35% IUGR vs. 6% SGA), and the second prematurity (27% IUGR vs. 6% SGA). Neonatal complications were observed in some newborn admitted to neonatal unit: 16 respiratory distress syndromes (12 IUGR vs. 4 SGA), 9 pathological cerebral scans (7 IUGR vs. 2 SGA), 7 hyaline membrane (4 IUGR vs. 3 SGA), 7 mechanical ventilation (4 IUGR vs. 3 SGA), 5 inotropic drugs (3 IUGR vs. 2 SGA), 3 sepsis (2 IUGR vs. 1 SGA), 3 renal insufficiency (3 IUGR), 1 cerebral hemorrhage (IUGR), 1 neonatal death (IUGR) and 1 enterocolitis (IUGR). We found significant differences (P < 0.05) in these complications (72% IUGR vs. 28% SGA). IUGR foetuses have more probability of admission to neonatal unit, as well as obstetrical (hypertension, non-reassuring foetal heart rate status, Caesarean section) and neonatal complications.