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Can blood eosinophil count be used as a predictive marker for the severity of COPD and concomitant cardiovascular disease? The relationship with the 2023 Version of the Global Initiative for Chronic Obstructive Lung Disease Staging.
OBJECTIVE: This study was designed to investigate the relationship between eosinophil count and cardiovascular disease (CVD) in subjects with chronic obstructive pulmonary disease (COPD) and the correlation between eosinophil count and the risk of exacerbations in COPD.
PATIENTS AND METHODS: The study included 405 patients who met the study inclusion criteria. Of the participants, 100 (25%) were classified as Global Initiative for Chronic Obstructive Lung Disease (GOLD) A, 105 (26%) as GOLD B, and 200 (49%) as GOLD E. Routine blood tests (including leukocyte count and differential leukocyte count, hemoglobin, and platelet count) were carried out using an automated hematology analyzer.
RESULTS: The eosinophil count and eosinophil percentage were significantly higher in 158 patients with COPD and concurrent CVD than in the COPD patients without concurrent CVD [2.95 (2.4), p=2.309e-11, 1.9 (2), p=5.02e-08, respectively). The prevalence of CVD was higher in the GOLD E group that experienced prominent exacerbations, and while the eosinophil count was also higher (p=.03) in this group, the eosinophil percentage did not differ significantly in this group of patients.
CONCLUSIONS: The results of our study indicate a strong relationship between eosinophils and cardiovascular events in COPD subjects, particularly in subjects at high risk of exacerbations and cardiovascular complications.
PATIENTS AND METHODS: The study included 405 patients who met the study inclusion criteria. Of the participants, 100 (25%) were classified as Global Initiative for Chronic Obstructive Lung Disease (GOLD) A, 105 (26%) as GOLD B, and 200 (49%) as GOLD E. Routine blood tests (including leukocyte count and differential leukocyte count, hemoglobin, and platelet count) were carried out using an automated hematology analyzer.
RESULTS: The eosinophil count and eosinophil percentage were significantly higher in 158 patients with COPD and concurrent CVD than in the COPD patients without concurrent CVD [2.95 (2.4), p=2.309e-11, 1.9 (2), p=5.02e-08, respectively). The prevalence of CVD was higher in the GOLD E group that experienced prominent exacerbations, and while the eosinophil count was also higher (p=.03) in this group, the eosinophil percentage did not differ significantly in this group of patients.
CONCLUSIONS: The results of our study indicate a strong relationship between eosinophils and cardiovascular events in COPD subjects, particularly in subjects at high risk of exacerbations and cardiovascular complications.
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