Abstract
Background: Evidence indicates an association of inflammatory process with atherosclerosis. Systemic inflammatory markers may point out the association of inflammatory changes with coronary artery diseases.Aim: to investigate the association of Neutrophil/ Lymphocyte ratio (NLR) and Platelet/Lymphocyte Ratio (PLR) with the severity of coronary artery disease in patients with DM.Method: We conducted a cross-sectional study of patients with coronary artery disease admitted for coronary angiography in Basra Cardiac Center. The study was done from March 2021 to February 2022. We collected demographic data, past medical history, biochemical tests and complete blood picture with the calculation of NLR and PLR. We reviewed coronary angiography to assess the number of diseased vessels, severity, and complexity of the lesions. The patients were divided into 2 groups; significant (≥ 70% obstruction) and non-significant CAD (< 70% obstruction).Results: the study enrolled 228 (169 males and 59 females) patients with CAD. Significant CAD was found in 188 patients. The NLR was significantly correlated with the presence, extent, and severity of CAD (p-value 0.01, 0.003, 0.001) respectively. The PLR was significantly associated with the severity of CAD (p-value = 0.01), but non-significantly correlated with CAD presence or extent (p-value 0.28, 0.36) respectively. The NLR but not PLR was an independent marker to predict significant CAD in patients with DM.Conclusion: neutrophil / Lymphocyte ratio was associated with the presence, extent, and severity of significant CAD in diabetic patients. Platelet/Lymphocyte Ratio was only associated with the severity of CAD.
Keywords
complete blood picture
Coronary artery diseases
DM
NLR
PLR