Archives of disease in childhood. Fetal and neonatal edition · 2020
Outcomes of outborn very-low-birth-weight infants in Japan.
СтатьяНаблюдательное исследованиеНазвание и аннотация: Перевод в очереди
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Hirata Katsuya, Kimura Takeshi, Hirano Shinya, Wada Kazuko, Kusuda Satoshi, Fujimura Masanori, Neonatal Research Network of Japan
Аннотация
BACKGROUND: Outcomes of prenatal covariate-adjusted outborn very-low-birth-weight infants (VLBWIs) (≤1500 g) remain uncertain.
OBJECTIVE: To compare morbidity and mortality between outborn and inborn VLBWIs.
DESIGN: Observational cohort study using inverse-probability-of-treatment weighting.
SETTING: Neonatal Research Network of Japan.
PATIENTS: Singleton VLBWIs with no major anomalies admitted to a neonatal intensive care unit from 2012 to 2016.
METHODS: Inverse-probability-of-treatment weighting with propensity scores was used to reduce imbalances in prenatal covariates (gestational age (GA), birth weight, small for GA, sex, maternal age, premature rupture of membranes, chorioamnionitis, preeclampsia, maternal diabetes mellitus, antenatal steroids and caesarean section). The primary outcome was severe intraventricular haemorrhage (IVH). The secondary outcomes were outcomes at resuscitation, other neonatal morbidities and mortality.
RESULTS: The full cohort comprised 15 842 VLBWIs (668 outborns). The median (IQR) GA and birth weight were 28.9 (26.4-31.0) weeks and 1128 (862-1351) g for outborns and 28.7 (26.3-30.9) weeks and 1042 (758-1295) g for inborns. Outborn VLBWIs had a higher incidence of severe IVH (8.2% vs 4.1%; OR, 3.45; 95% CI 1.16 to 10.3) and pulmonary haemorrhage (3.7% vs 2.8%; OR, 5.21; 95% CI 1.41 to 19.2). There were no significant differences in Apgar scores, oxygen rates at delivery, intubation ratio at delivery, persistent pulmonary hypertension of the newborn, IVH of any grade, periventricular leukomalacia, chronic lung disease, oxygen at discharge, patent ductus arteriosus, retinopathy of prematurity, necrotising enterocolitis, sepsis or mortality.
CONCLUSION: Outborn delivery of VLBWIs was associated with an increased risk of severe IVH.
OBJECTIVE: To compare morbidity and mortality between outborn and inborn VLBWIs.
DESIGN: Observational cohort study using inverse-probability-of-treatment weighting.
SETTING: Neonatal Research Network of Japan.
PATIENTS: Singleton VLBWIs with no major anomalies admitted to a neonatal intensive care unit from 2012 to 2016.
METHODS: Inverse-probability-of-treatment weighting with propensity scores was used to reduce imbalances in prenatal covariates (gestational age (GA), birth weight, small for GA, sex, maternal age, premature rupture of membranes, chorioamnionitis, preeclampsia, maternal diabetes mellitus, antenatal steroids and caesarean section). The primary outcome was severe intraventricular haemorrhage (IVH). The secondary outcomes were outcomes at resuscitation, other neonatal morbidities and mortality.
RESULTS: The full cohort comprised 15 842 VLBWIs (668 outborns). The median (IQR) GA and birth weight were 28.9 (26.4-31.0) weeks and 1128 (862-1351) g for outborns and 28.7 (26.3-30.9) weeks and 1042 (758-1295) g for inborns. Outborn VLBWIs had a higher incidence of severe IVH (8.2% vs 4.1%; OR, 3.45; 95% CI 1.16 to 10.3) and pulmonary haemorrhage (3.7% vs 2.8%; OR, 5.21; 95% CI 1.41 to 19.2). There were no significant differences in Apgar scores, oxygen rates at delivery, intubation ratio at delivery, persistent pulmonary hypertension of the newborn, IVH of any grade, periventricular leukomalacia, chronic lung disease, oxygen at discharge, patent ductus arteriosus, retinopathy of prematurity, necrotising enterocolitis, sepsis or mortality.
CONCLUSION: Outborn delivery of VLBWIs was associated with an increased risk of severe IVH.