Evaluation of Red Blood Cell Distribution Width in Patients with Cardiac Syndrome X. Issue 5 (22nd May 2013)

• Record Type: Journal Article
• Authors: Qing, Ping; Luo, Song-Hui; Guo, Yuan-Lin; Liu, Jun; Xu, Rui-Xia; Zhu, Cheng-Gang; Jia, Yan-Jun; Ma, Feng-Lian; Wu, Na-Qiong; Jiang, Li-Xin; Li, Jian-Jun
• Is Part Of: Disease markers. Volume 34:Issue 5(2013)
• Page Start: 333
• Page End: 339
• Publication Date: 2013-05-22
• Subjects: Cardiac syndrome X -- Red cell distribution width -- C-reactive protein -- complete blood count; Diagnosis -- Periodicals; Biochemical markers -- Periodicals; Pathology -- Periodicals; 616
• DOI: 10.3233/DMA-130977
• Languages: English
• ISSNs: 0278-0240

Abstract

Abstract : BACKGROUND: Cardiac syndrome X (CSX) is a condition characterized by chest pain with normal coronary arteries. However, its pathogenesis has not fully been understood yet. Red blood cell distribution width (RDW) has recently been suggested as a marker of acute and chronic cardiovascular diseases, while no data is available in patients with CSX. METHODS: One hundred and twenty consecutive patients with CSX and 102 normal controls were prospectively enrolled in this study. Blood samples were drawn from all individuals for measuring RDW and high-sensitivity C-reactive protein (CRP). The baseline data were compared between patients with CSX and normal controls. RESULTS: The RDW levels were significantly higher in patients with CSX than that in those with normal controls (13.1 ± 2.1 versus 12.3 ± 1.8, p = 0.011). Moreover, the data showed that the levels of plasma CRP were marked higher in patients with CSX than those that were observed in normal controls (CRP: 2.8 ± 2.2 mg/L versus 2.0 ± 1.7 mg/dl, p = 0.014). In addition, the multivariate analysis indicated that peripheral monocyte cell, CRP and RDW were the independent variables most strongly associated with CSX. In a receiver operating characteristic (ROC) curve analysis, we found that an RDW value of 12.8% was used as an effective cut-point in the segregation of the presence or absence of cardiac syndrome X, a sensitivity of 52.0% and a specificity of 65.4% were obtained. Finally, correlation analysis suggested that there was positive correlation between plasma levels of CRP and RDW levels ( n = 120, γ = 0.381, P = 0.013). CONCLUSIONS: The present study, for the first time, demonstrated that elevated RDW and CRP levels were independently associated with the presence of CSX.