Thrombocytopenia requiring platelet transfusions is predictive of retinopathy of prematurity in preterm infants

BACKGROUND: Recent studies suggest that some hematological parameters and ratios provided by blood count col-lected on the first day of life may be predictors for the development of retinopathy of prematurity (ROP). The aims of this study were to assess whether hematological parameters and ratios in blood count collected on the first day of life are associated with ROP.METHODS: Retrospective data collection from electronic clinical files o f i nborn preterm i nfants w ith a gestational age of less than 30 weeks delivered from January 2008 to December 2022, in a level III Neonatal Intensive Care Unit (NICU). We collected detailed clinical and demographic data on the mother, pregnancy, mode of delivery, resuscita-tion, in-hospital neonatal morbidity, pathological examination of the placenta, and hematological parameters and ratios provided by blood count collected on the first day of life. We compared neonates with or without ROP and performed a subgroup analysis on patients with ROP >= 2.RESULTS: We included 140 preterm infants with ophthalmic examination; 81(57.9%) developed ROP. The need for platelet transfusions (OR=5.28; 95% CI: 1.31-21.21; P=0.019) and bronchopulmonary dysplasia (BPD) (OR=5.12; 95% CI: 1.14-22.98; P=0.033) were independent risk factors for ROP. In the multivariate analysis, no associations were found between any of the hematological parameters or ratios studied and ROP.CONCLUSIONS: In our study, hematological parameters and ratios on the first day of life were not associated with the development of ROP. However, thrombocytopenia that required platelet transfusions was associated with ROP develop-ment and severity.(Cite this article as: Ribeiro C, Rocha G, Flar-de-Lima F, Ferreras C, Moita R, Silva R, et al. Thrombocytopenia requiring platelet transfusions is predictive of retinopathy of prematurity in preterm infants. Minerva Pediatr 2023 Sep 28. DOI: 10.23736/S2724-5276.23.07336-6)