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Journal of the Korean Society of Neonatology 2001;8(2):236-246.
Published online November 1, 2001.
Risk Factors of Threshold Retinopathy of Prematurity in Preterm Infants with Bronchopulmonary Dysplasia.
Shin Young Kim, Kyu Hyung Lee
Department of Pediatrics, College of Medicine, Pochon CHA University, Sungnam, Korea.
기관지 폐 이형성증 환아에서의 중증 미숙아 망막증의 발생 요인
,
Abstract
PURPOSE
We tried to clarify perinatal risk factors that are related to the occurrence of threshold retinopathy of prematurity in preterm infants with bronchopulmonary dysplasia.
METHODS
We enrolled 40 infants with bronchopulmonary dysplasia who had received ophthalmologic examination between April 1995 and May 2001. The patients were categorized into two groups; "threshold retinopathy of prematurity" group as study (n=18), and "no retinopathy of prematurity" and "prethreshold retinopathy of prematurity" group as control population (n=22), and we compared the perinatal risk factors between the two.
RESULTS
Out of total 40 preterm infants with bronchopulmonary dysplasia, only prethreshold retinopathy of prematurity occurred in 6 infants (15%) and threshold retinopathy of prematurity developed in 18 infants(45%). The incidence of threshold retinopathy of prematurity decreased with longer gestation and higher birth weight. Mean gestational age was 26.3 weeks in the study group vs 29.4 weeks in control group, and mean birth weight was 868 g and 1,413 g, respectively. An increased risk of reaching threshold retinopathy of prematurity was found associated with apnea, longer use of aminophylline, hyperglycemia, and higher SNAP scores during the first 24 hours from admission to the NICU. The incidence of threshold retinopathy of prematurity was not influenced by duration of oxygen therapy, ventilator therapy, total parenteral nutrition, phototherapy, hospitalization, intraventricular hemorrhage, pneumonia, pulmonary hemorrhage, sepsis, patent ductus arteriosus, air leak syndrome, necrotizing enterocolitis, frequency of transfusion, and longer use of dexamethasone.
CONCLUSION
An increased risk of reaching threshold retinopathy of prematurity in preterm infants with bronchopulmonary dysplasia was found associated with lower birth weight, younger gestational age, apnea, longer use of aminophylline, hyperglycemia, and higher SNAP scores during the first 24 hours from admission to the NICU.
Key Words: Threshold Retinopathy of Prematurity, Bronchopulmonary Dysplasia, Perinatal Risk Factors


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