Predictive role of platelets to lymphocytes ratio and neutrophil to lymphocytes ratio in COPD exacerbation

Author:

Fayiad HussienORCID,Amer Ahmed Mohamed

Abstract

Abstract Background The hallmark of COPD is the progressive destruction of the lung parenchyma, which is frequently brought on by the body's inflammatory reaction to external stimuli (such as smoking cigarettes or pollution). According to reports, the peripheral blood's essential immune-related cell populations' absolute counts and ratios can accurately represent chronic inflammatory diseases. Complex interactions between immune-related cells, such as lymphocytes and neutrophils, are involved in inflammation, which can cause irreversible damage and loss of respiratory tissue. The neutrophil-to-lymphocyte ratio (NLR) and the platelet-to-lymphocyte ratio (PLR), two hematological indicators of inflammation, have been studied in a variety of disease states, including solid tumors, systemic lupus erythematosus, coronary artery disease, retinal artery occlusion, chronic kidney disease, and stable COPD. Aim Correlation between NLR and PLR and outcome of COPD exacerbation. Materials and methods This cross-sectional study included 80 patients with COPD exacerbation who visited the outpatient clinic or were admitted to the Chest Department. CRP and calculation of NLR and PLR within 24 h from admission and 1 month after discharge were obtained to identify the prognostic value of NLR and PLR for the exacerbation, hospitalization, mechanical ventilation, and mortality in patients with COPD. Results During COPD exacerbation PLR, NLR showed a statistically significant correlation with the need for hospitalization with a p value < 0.001. As regards correlation with mortality NLR was statistically significant with a p value of 0.006 while PLR showed a non-significant p value of 0.077. PLR and NLR were correlated with CRP as an inflammatory marker and both were statistically significant with p value 0.004 and < 0.001 respectively. During exacerbation, PLR and NLR were correlated with the need for mechanical ventilation and the results were statistically significant with p value < 0.001. PLR and NLR showed a significant increase during exacerbation compared to stable COPD patients 1 month after discharge with p value of < 0.001. Conclusion PLR and NLR are simple tests that could be used to predict the severity of COPD exacerbation and the need for hospitalization, MV, and mortality prediction.

Publisher

Springer Science and Business Media LLC

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