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JOURNAL ARTICLE

Relation of neutrophil-to-lymphocyte and platelet-to-lymphocyte ratio with coronary artery disease severity in patients undergoing coronary angiography

Ibrahim Sari, Murat Sunbul, Ceyhun Mammadov, Erdal Durmus, Mehmet Bozbay, Tarik Kivrak, Fethullah Gerin
Kardiologia Polska 2015, 73 (12): 1310-6
25987404

BACKGROUND: Atherosclerosis is a chronic systemic inflammatory disease. Neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) are systemic inflammatory markers that are correlated with poor cardiovascular outcomes.

AIM: To explore the relation of NLR and PLR with severity of coronary artery disease (CAD).

METHODS: The study population consisted of 180 consecutive patients who underwent elective coronary angiography (CAG). While 100 patients (22 female, mean age: 60.6 ± 12.6 years) had abnormal CAG, 80 patients (44 female, mean age: 57.2 ± 10.9 years) had normal CAG. NLR and PLR were calculated as the ratio of neutrophil count to lymphocyte count and as the ratio of platelet count to lymphocyte count, respectively.

RESULTS: Although age distribution was similar between the two groups (p = 0.073), female gender was significantly higher in the normal CAG group (p < 0.001). Patients with abnormal CAG had significantly higher NLR and PLR when compared to patients with normal CAG (3.7 ± 2.6 vs. 2.2 ± 1.7, p < 0.001 and 125.9 ± 72.3 vs. 102.6 ± 33.8, p = 0.027, respectively). NLR and PLR were significantly correlated with SYNTAX score and GENSINI score. In logistic regression analyses, only NLR (odds ratio: 1.576, confidence interval: 1.198-2.072, p = 0.001) was an independent predictor of CAD. An NLR of 2.3 or higher predicted the CAD with a sensitivity of 66% and specificity of 70%.

CONCLUSIONS: NLR and PLR seem to be a simple method to predict severity of CAD in patients undergoing elective CAG, and it may be part of cardiovascular examination before CAG.

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