Arlette J van Sorge1, Jacqueline U M Termote2, Frank T Kerkhoff3, Laurentius J van Rijn4, Huibert J Simonsz5, Petronella G M Peer6, Nicoline E Schalij-Delfos7. 1. Department of Ophthalmology, Leiden University Medical Center, Leiden, The Netherlands. Electronic address: a.j.van_sorge@lumc.nl. 2. Department of Neonatology, Wilhelmina Children's Hospital-University Medical Center, Utrecht, The Netherlands. 3. Department of Ophthalmology, Maxima Medical Center, Veldhoven, The Netherlands. 4. Department of Ophthalmology, VU Medical Center, Amsterdam, The Netherlands. 5. Department of Ophthalmology, Sophia Children's Hospital-Erasmus MC, Rotterdam, The Netherlands. 6. Department for Health Evidence, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands. 7. Department of Ophthalmology, Leiden University Medical Center, Leiden, The Netherlands.
Abstract
OBJECTIVES: To study the incidence and risk factors for retinopathy of prematurity (ROP) in the Netherlands. STUDY DESIGN: Prospective, approximating population-based study that included infants with gestational age (GA) <32 weeks and/or birth weight (BW) <1500 g born in 2009. Pediatricians and ophthalmologists of all hospitals involved in care for premature infants reported data that were matched with the national perinatal database for risk factor analysis. RESULTS: Of 1380 infants, median GA 29.8 weeks (IQR 28.1-31.1) and median BW 1260 g (IQR 1020-1500), ROP developed in 21.9%. Logistic regression identified GA and BW as risk factors for ROP (P < .001). After adjustment for GA and BW, additional risk factors were inhaled nitric oxide (iNO; OR 2.6, 95% CI 1.1-6.2, P = .03), stay at a neonatal intensive care unit >28 days (OR 1.6, 95% CI 1.1-2.6, P = .03), and artificial ventilation >7 days (OR 1.6, 95% CI 1.1-2.5, P = .02). Prenatal glucocorticoids (OR 0.6, 95% CI 0.4-0.8, P < .001) and female sex (OR 0.7, 95% CI 0.5-0.99, P = .04) showed a lesser incidence of ROP. iNO remained significant after correction for all significant factors (OR 2.6, 95% CI 1.1-6.2, P = .03). CONCLUSION: In addition to established risk factors (GA, BW, stay at a neonatal intensive care unit >28 days, and artificial ventilation >7 days), treatment with iNO as risk factor for ROP is a novel finding.
OBJECTIVES: To study the incidence and risk factors for retinopathy of prematurity (ROP) in the Netherlands. STUDY DESIGN: Prospective, approximating population-based study that included infants with gestational age (GA) <32 weeks and/or birth weight (BW) <1500 g born in 2009. Pediatricians and ophthalmologists of all hospitals involved in care for premature infants reported data that were matched with the national perinatal database for risk factor analysis. RESULTS: Of 1380 infants, median GA 29.8 weeks (IQR 28.1-31.1) and median BW 1260 g (IQR 1020-1500), ROP developed in 21.9%. Logistic regression identified GA and BW as risk factors for ROP (P < .001). After adjustment for GA and BW, additional risk factors were inhaled nitric oxide (iNO; OR 2.6, 95% CI 1.1-6.2, P = .03), stay at a neonatal intensive care unit >28 days (OR 1.6, 95% CI 1.1-2.6, P = .03), and artificial ventilation >7 days (OR 1.6, 95% CI 1.1-2.5, P = .02). Prenatal glucocorticoids (OR 0.6, 95% CI 0.4-0.8, P < .001) and female sex (OR 0.7, 95% CI 0.5-0.99, P = .04) showed a lesser incidence of ROP. iNO remained significant after correction for all significant factors (OR 2.6, 95% CI 1.1-6.2, P = .03). CONCLUSION: In addition to established risk factors (GA, BW, stay at a neonatal intensive care unit >28 days, and artificial ventilation >7 days), treatment with iNO as risk factor for ROP is a novel finding.
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