Retinopathy of Prematurity (1) Birth Weight, Gestational Age and Maximum PaCO_2 TSUCHIYA Seiichi TSUYAMA Kaichiro 東海大学 Tokai journal of experimental and clinical medicine 03850005 12 1 39 42 1987-03 The eyes of neonates who were premature or had been exposed to increased ambient oxygen from May 1979 to February 1985 were examined. Twenty out of 256 infants were found to have retinopathy of prematurity (ROP) of stage 3 or worse in at least one eye. Using uivariate statistics (chi-square analysis or the Wilcoxon test), the variables representing the maximum arterial carbon dioxide tension (PaCO_2), birth weight and gestational age were found to be significantly associated with ROP. It is recommended to maintain PaCO_2 values under 50 mmHg, especially in less mature newborns (less than 1,300g in birth weight or 210 days of gestational age). 1987-03 110004700392 AA00863975 ENG NII-ELS 3 Retinopathy of Prematurity (1) Birth Weight, Gestational Age and Maximum PaCO_2 TSUCHIYA Seiichi TSUYAMA Kaichiro Tokai University Tokai journal of experimental and clinical medicine The eyes of neonates who were premature or had been exposed to increased ambient oxygen from May 1979 to February 1985 were examined. Twenty out of 256 infants were found to have retinopathy of prematurity (ROP) of stage 3 or worse in at least one eye. Using uivariate statistics (chi-square analysis or the Wilcoxon test), the variables representing the maximum arterial carbon dioxide tension (PaCO_2), birth weight and gestational age were found to be significantly associated with ROP. It is recommended to maintain PaCO_2 values under 50 mmHg, especially in less mature newborns (less than 1,300g in birth weight or 210 days of gestational age). TSUCHIYA Seiichi Department of Ophthalmology, School of Medicine, Tokai University TSUYAMA Kaichiro Department of Ophthalmology, School of Medicine, Tokai University