Özet:

Objective: To investigate neutrophil/lymphocyte (NLR), lymphocyte/monocyte (LMR), platelet/lymphocyte (PLR) ratios, and the value of these parameters in determining disease severity and progression in hospitalized COVID-19 patients. Materials and Methods: Study was conducted retrospectively with 182 in-patients and 91 controls due to COVID-19 between April-September 2020 in the chest diseases clinic. Hematological parameters and rates were compared with controls’ parameters. Correlations and differences between hematological parameters and other parameters were investigated. Results: Lymphocyte, monocyte, eosinophil, basophil, hemoglobin, thrombocyte, and LMR were significantly lower. NLR and PLR were higher. There were significant increases in hematological parameters and PLR on discharge. A positive correlation existed between radiological pneumonia severity score, and NLR (r=0.234, p=0.001) and PLR (r=0.128, p=0.042), and significant inverse correlation with LMR (r=-0.206, p=0.003). Positive correlations were detected between NLR (r=0.140, p=0.030) and PLR (r=0.125, p=0.046), and symptom-discharge time, and inverse correlation between LMR, and both symptom-discharge (r=-0.137, p=0.032) and hospital stay time (r=-0.135, p=0.034). A positive correlation existed between CRP, and NLR and PLR on admission and discharge. Conclusion: NLR, LMR and PLR were found as hematological predictors to be used with CRP in following-up COVID-19, showing a significant correlation with disease severity, monitoring responses to treatment and predicting prognosis.

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