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Analysis of risk factors in the development of retinopathy of prematurity

Author(s): Knežević Sanja | Stojanović Nadežda | Oros Ana | Savić Dragana | Simović Aleksandra | Knežević Jasmina

Journal: Srpski Arhiv za Celokupno Lekarstvo
ISSN 0370-8179

Volume: 139;
Issue: 7-8;
Start page: 433;
Date: 2011;
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Keywords: retinopathy of prematurity | risk factors | multivariate statistical analysis

Introduction. Retinopathy of prematurity (ROP) is a multifactorial disease that occurs most frequently in very small and very sick preterm infants, and it has been identified as the major cause of childhood blindness. Objective. The aim of this study was to evaluate ROP incidence and risk factors associated with varying degrees of illness. Methods. The study was conducted at the Centre for Neonatology, Paediatric Clinic of the Clinical Centre Kragujevac, Serbia, in the period from June 2006 to December 2008. Ophthalmologic screening was performed in all children with body weight lower than 2000 g or gestational age lower than 36 weeks. We analyzed eighteen postnatal and six perinatal risk factors and the group correlations for each of the risk factors. Results. Out of 317 children that were screened, 56 (17.7%) developed a mild form of ROP, while 68 (21.5%) developed a severe form. Univariate analysis revealed a large number of statistically significant risk factors for the development of ROP, especially the severe form. Multivariate logistical analysis further separated two independent risk factors: small birth weight (p=0.001) and damage of central nervous system (p=0.01). Independent risk factors for transition from mild to severe forms of ROP were identified as: small birth weight (p=0.05) and perinatal risk factors (p=0.02). Conclusion. Small birth weight and central nervous system damage were risk factors for the development of ROP, perinatal risk factors were identified as significant for transition from mild to severe form of ROP.
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