RESUMO
<p><b>OBJECTIVE</b>To study the association of red blood cell distribution width (RDW) and lipoprotein-associated phospholipase A2 (LP-PLA2) with the degree of coronary artery stenosis in patients with coronary artery disease (CAD) and the value of RDW combined with LP-PLA2 detection in accurate evaluation of coronary artery stenosis.</p><p><b>METHODS</b>A total of 224 patients including 119 non-CAD cases and 105 CAD cases admitted in our hospital between June, 2013 and June, 2014 were enrolled in this study. The patients' baseline clinical data were collected and venous blood samples were obtained for detecting WBC, RDW-CV and LP-PLA2. The Gensini score of the CAD patients was calculated based on coronary angiographic findings.</p><p><b>RESULTS</b>Compared with the non-CAD patients, CAD patients had significantly higher RDW-CV (P=0.009) and LP-PLA2 (P=0.004) levels. The CAD patients with high Gensini scores had also significantly higher RDW-CV (P=0.001) and LP-PLA2 (P<0.001) levels than those with low scores; RDW-CV and LP-PLA2 were significantly correlated with the Gensini score, and the area under curve of their combined detection was 0.931.</p><p><b>CONCLUSION</b>Combination of RDW and LP-PLA2 can improve the diagnostic accuracy of the degree of coronary artery stenosis in patients with CAD.</p>