Risk factors of threshold retinopathy of prematurity.
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OBJECTIVE: To determine the risk factors which predispose to the development of threshold retinopathy of prematurity among patients of retinopathy of prematurity. METHODS: The ROP clinic records of a 3 year period were retrospectively studied to identify babies with threshold ROP (T-ROP) and sub-threshold ROP (ST-ROP). Various antenatal and perinatal risk factors, neonatal morbidity and therapeutic interventions were compared between the 2 groups. RESULTS: Of the total of 108 babies, 55 had T-ROP and 53 had ST-ROP. On univariate analysis, packed cell transfusions for anemia, double volume exchange transfusions (DVET), number of DVET, ventilation, gestational age
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