Rivka H Regev1,2, Shmuel Arnon3,4, Ita Litmanovitz3,4, Sofia Bauer-Rusek3, Valentina Boyko5, Liat Lerner-Geva4,5, Brian Reichman4,5. 1. Department of Neonatology, Meir Hospital, Sapir Medical Center, Kfar Saba, Israel. regevdr@netvision.net.il. 2. Sackler Medical School, Tel Aviv University, Tel Aviv, Israel. regevdr@netvision.net.il. 3. Department of Neonatology, Meir Hospital, Sapir Medical Center, Kfar Saba, Israel. 4. Sackler Medical School, Tel Aviv University, Tel Aviv, Israel. 5. Women and Children's Health Research Unit, Gertner Institute for Epidemiology and Health Policy Research, Tel Hashomer, Israel.
Abstract
AIM: To evaluate the possible association between major neonatal morbidities and poor head growth from birth to discharge home in very-low-birthweight (VLBW) infants born preterm. METHOD: Population-based observational study comprising 12 992 infants (6340 male, 6652 female) of 24 to 32 weeks' gestation, and birthweight ≤1500g. Severe head growth failure (HGF) was defined as a decrease in head circumference z-score >2 z-scores, and moderate HGF as a decrease of 1 to 2 z-scores. Multinomial logistic regression analysis was applied to determine morbidities associated with HGF. RESULTS: Severe HGF occurred in 4.5% and moderate HGF in 20.9% of infants. Each unit increase in head circumference z-score at birth was associated with increased odds for severe and moderate HGF (odds ratios [OR] 5.29, 95% confidence intervals [CI] 4.67-6.00, and OR 2.38, 95% CI 2.23-2.54 respectively). Both severe and moderate HGF were associated with respiratory distress syndrome (OR 2.03, 95% CI 1.58-2.62, and OR 1.66, 95% CI 1.48-1.85 respectively); bronchopulmonary dysplasia (OR 3.38, 95% CI 2.33-4.91, and OR 1.87, 95% CI 1.52-2.30 respectively); necrotizing enterocolitis (OR 2.89, 95% CI 2.04-4.09, and OR 1.72, 95% CI 1.38-2.16 respectively), and sepsis (OR 2.06, 95% CI 1.69-2.50, and OR 1.38, 95% CI 1.24-1.53 respectively). INTERPRETATION: Major neonatal morbidities were associated with HGF in VLBW infants born preterm. Identification of whether this is a direct effect of these morbidities or mediated through nutritional or growth factors may enable interventions to improve postnatal head growth of infants born preterm.
AIM: To evaluate the possible association between major neonatal morbidities and poor head growth from birth to discharge home in very-low-birthweight (VLBW) infants born preterm. METHOD: Population-based observational study comprising 12 992 infants (6340 male, 6652 female) of 24 to 32 weeks' gestation, and birthweight ≤1500g. Severe head growth failure (HGF) was defined as a decrease in head circumference z-score >2 z-scores, and moderate HGF as a decrease of 1 to 2 z-scores. Multinomial logistic regression analysis was applied to determine morbidities associated with HGF. RESULTS: Severe HGF occurred in 4.5% and moderate HGF in 20.9% of infants. Each unit increase in head circumference z-score at birth was associated with increased odds for severe and moderate HGF (odds ratios [OR] 5.29, 95% confidence intervals [CI] 4.67-6.00, and OR 2.38, 95% CI 2.23-2.54 respectively). Both severe and moderate HGF were associated with respiratory distress syndrome (OR 2.03, 95% CI 1.58-2.62, and OR 1.66, 95% CI 1.48-1.85 respectively); bronchopulmonary dysplasia (OR 3.38, 95% CI 2.33-4.91, and OR 1.87, 95% CI 1.52-2.30 respectively); necrotizing enterocolitis (OR 2.89, 95% CI 2.04-4.09, and OR 1.72, 95% CI 1.38-2.16 respectively), and sepsis (OR 2.06, 95% CI 1.69-2.50, and OR 1.38, 95% CI 1.24-1.53 respectively). INTERPRETATION: Major neonatal morbidities were associated with HGF in VLBW infants born preterm. Identification of whether this is a direct effect of these morbidities or mediated through nutritional or growth factors may enable interventions to improve postnatal head growth of infants born preterm.
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