Girija Natarajan1, Seetha Shankaran2, Shampa Saha3, Abbot Laptook4, Abhik Das3, Rosemary Higgins5, Barbara J Stoll6, Edward F Bell7, Waldemar A Carlo8, Carl D'Angio9, Sara B DeMauro10, Pablo Sanchez11, Krisa Van Meurs12, Betty Vohr4, Nancy Newman13, Ellen Hale14, Michele Walsh13. 1. Wayne State University, Detroit, MI. Electronic address: gnatara@med.wayne.edu. 2. Wayne State University, Detroit, MI. 3. RTI International, Research Triangle Park, NC. 4. Women and Infants Hospital of Rhode Island, Providence, RI. 5. Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD. 6. Department of Pediatrics, UT Health McGovern Medical School, Houston, TX. 7. Department of Pediatrics, University of Iowa, Iowa City, IA. 8. Department of Pediatrics, University of Alabama at Birmingham, Birmingham, AL. 9. University of Rochester Medical Center, Rochester, NY. 10. Department of Pediatrics, University of Pennsylvania, PA. 11. Department of Pediatrics, Nationwide Children's Hospital, Ohio State University, Columbus, OH. 12. Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine and Lucile Packard Children's Hospital, Palo Alto, CA. 13. Department of Pediatrics, Rainbow Babies and Children's Hospital, Case Western Reserve University, Cleveland, OH. 14. Emory University, Atlanta, GA.
Abstract
OBJECTIVES: To describe the frequency and findings of cranial imaging in moderately preterm infants (born at 290/7-336/7 weeks of gestation) across centers, and to examine the association between abnormal imaging and clinical characteristics. STUDY DESIGN: We used data from the Neonatal Research Network Moderately Preterm Registry, including the most severe early (≤28 days) and late (>28 days) cranial imaging. Stepwise logistic regression and CART analysis were performed after adjustment for gestational age, antenatal steroid use, and center. RESULTS: Among 7021 infants, 4184 (60%) underwent cranial imaging. These infants had lower gestational ages and birth weights and higher rates of small for gestational age, outborn birth, cesarean delivery, neonatal resuscitation, and treatment with surfactant, compared with those without imaging (P < .0001). Imaging abnormalities noted in 15% of the infants included any intracranial hemorrhage (13.2%), grades 3-4 intracranial hemorrhage (1.7%), cystic periventricular leukomalacia (2.6%), and ventriculomegaly (6.6%). Histologic chorioamnionitis (OR, 1.47; 95% CI, 1.19-1.83), gestational age (0.95; 95% CI, 0.94-0.97), antenatal steroids (OR, 0.55; 95% CI, 0.41-0.74), and cesarean delivery (OR, 0.66; 95% CI, 0.53-0.81) were associated with abnormal imaging. The center with the highest rate of cranial imaging, compared with the lowest, had a higher risk of abnormal imaging (OR, 2.08; 95% CI, 1.10-3.92). On the classification and regression-tree model, cesarean delivery, center, antenatal steroids, and chorioamnionitis, in that order, predicted abnormal imaging. CONCLUSION: Among the 60% of moderately preterm infants with cranial imaging, 15% had intracranial hemorrhage, cystic periventricular leukomalacia or late ventriculomegaly. Further correlation of imaging and long-term neurodevelopmental outcomes in moderately preterm infants is needed.
OBJECTIVES: To describe the frequency and findings of cranial imaging in moderately preterm infants (born at 290/7-336/7 weeks of gestation) across centers, and to examine the association between abnormal imaging and clinical characteristics. STUDY DESIGN: We used data from the Neonatal Research Network Moderately Preterm Registry, including the most severe early (≤28 days) and late (>28 days) cranial imaging. Stepwise logistic regression and CART analysis were performed after adjustment for gestational age, antenatal steroid use, and center. RESULTS: Among 7021 infants, 4184 (60%) underwent cranial imaging. These infants had lower gestational ages and birth weights and higher rates of small for gestational age, outborn birth, cesarean delivery, neonatal resuscitation, and treatment with surfactant, compared with those without imaging (P < .0001). Imaging abnormalities noted in 15% of the infants included any intracranial hemorrhage (13.2%), grades 3-4 intracranial hemorrhage (1.7%), cystic periventricular leukomalacia (2.6%), and ventriculomegaly (6.6%). Histologic chorioamnionitis (OR, 1.47; 95% CI, 1.19-1.83), gestational age (0.95; 95% CI, 0.94-0.97), antenatal steroids (OR, 0.55; 95% CI, 0.41-0.74), and cesarean delivery (OR, 0.66; 95% CI, 0.53-0.81) were associated with abnormal imaging. The center with the highest rate of cranial imaging, compared with the lowest, had a higher risk of abnormal imaging (OR, 2.08; 95% CI, 1.10-3.92). On the classification and regression-tree model, cesarean delivery, center, antenatal steroids, and chorioamnionitis, in that order, predicted abnormal imaging. CONCLUSION: Among the 60% of moderately preterm infants with cranial imaging, 15% had intracranial hemorrhage, cystic periventricular leukomalacia or late ventriculomegaly. Further correlation of imaging and long-term neurodevelopmental outcomes in moderately preterm infants is needed.
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