Although preterm infant mortality is low, the proportion of patients with treatment-requiring retinopathy of prematurity (TR-ROP) is high in Japan. Various multicenter studies have reported the risk factors for TR-ROP; however, no large-scale studies have been conducted in Japan. We retrospectively analyzed 13,645 infants born at < 28 weeks' gestation (January 1, 2009-December 31, 2018), and registered in the Neonatal Research Network of Japan database. TR-ROP was defined as ROP requiring retinal laser photocoagulation and/or intravitreal anti-vasoendothelial growth factor drugs. Multivariable logistic regression analysis was performed to identify factors associated with TR-ROP development. The median gestational age of enrolled infants was 26 weeks (interquartile range [IQR], 24-27 weeks), median birth weight was 760 g (IQR, 620-918 g). Proportion of patients with TR-ROP was 30.3%. TR-ROP was significantly associated with birth at < 26 weeks' gestational age (adjusted odds ratio [aOR] 1.54), blood transfusion (aOR 1.49), invasive ventilation ≥ 28 days (aOR 1.41), sepsis (aOR 1.29), birth weight < 750 g (aOR 1.28), intraventricular hemorrhage (aOR 1.33), delayed achievement of full enteral feeding > 14 days (aOR 1.28), and continuous positive airway pressure (CPAP) therapy ≥ 28 days (aOR 0.79). Supplemental oxygen ≥ 28 days was not associated with TR-ROP development. Lower gestational age at birth and birth weight, blood transfusion, prolonged invasive ventilation, sepsis, intraventricular hemorrhage, and delayed achievement of full enteral feeding were risk factors for TR-ROP, whereas CPAP use was protective against TR-ROP.
© 2022. The Author(s).