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To investigate the role of complete blood cell count (CBC) measures in retinal artery occlusion (RAO). This was a case-control study, including 73 newly diagnosed RAO patients and 73 sex- and age-matched subjects without RAO. On the same day of RAO diagnosis, a blood sample was collected and CBC was determined using an automatic blood counter. Dimensional CBC indices, such as mean platelet volume (MPV) and red cell distribution width (RDW), and some CBC-combined indices, including neutrophil/lymphocyte ratio (NLR), derived NLR [dNLR = neutrophils/(white blood cells - neutrophils)] and platelet/lymphocyte ratio (PLR), were evaluated. Erythrocyte sedimentation rate (ESR) was also measured. Median neutrophils, red cell distribution width (RDW), NLR and dNLR were 4.5x109 /L (IQR = 3.8-5.8), 13.4% (IQR = 12.7-14.75), 2.47 (IQR = 1.85-3.13) and 1.70 (IQR = 1.26-2.18) in RAO patients and 4x109 /L (IQR = 3.18-4.93), 12.9% (IQR = 12-14), 1.86 (IQR = 1.42-2.44) and 1.32 (IQR = 1.02-1.64) in controls. RAO patients had significantly higher values of neutrophils (p = 0.003), RDW (p = 0.0011), NLR (p = 0.0001) and dNLR (p = 0.0001). There were no significant differences between the values of white blood cells, lymphocytes, platelet count, MPV and PLR. Multivariate logistic regression models revealed a statistically significant correlation between RAO and increased RDW (OR = 1.36, 95% CI = 1.06-1.73, p = 0.015), NLR (OR = 2.02, 95% CI = 1.34-3.06, p = 0.0009) and dNLR (OR = 3.4, 95% CI = 1.71-6.75, p = 0.0005). Results suggest that RDW, NLR and dNLR may be involved in the pathogenesis of RAO and predict its occurrence. However, high-quality epidemiologic studies, preferably of cohort design, are warranted to confirm whether, or not, an RDW, NLR and dNLR may be considered potential biomarkers of RAO. © 2021 Acta Ophthalmologica Scandinavica Foundation. Published by John Wiley & Sons Ltd.

Citation

Antonio Pinna, Tiziana Porcu, Panagiotis Paliogiannis, Stefano Dore, Rita Serra, Francesco Boscia, Ciriaco Carru, Angelo Zinellu. Complete blood cell count measures in retinal artey occlusions. Acta ophthalmologica. 2021 Sep;99(6):637-643

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PMID: 33629472

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