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Published on: June 15, 2020
Relationship between hematologic parameters and left ventricular systolic dysfunction in stable patients with
Orhan Doğdu1, Mahmut Akpek, Mikail Yarlıoğlueş
1Department of Cardiology, Yozgat State Hospital, Yozgat, Turkey. orhandogdu@yahoo.com
Insights
The neutrophil-to-lymphocyte ratio (N/L ratio) and high-sensitivity C-reactive protein (hs-CRP) are linked to reduced left ventricular systolic function in multi-vessel coronary artery disease (MVCAD) patients. These inexpensive markers can predict impaired heart function in stable MVCAD.
Area of Science:
- Cardiology
- Hematology
- Internal Medicine
Background:
- Multi-vessel coronary artery disease (MVCAD) is a significant predictor of adverse outcomes in patients with chronic stable angina.
- Left ventricular systolic function is crucial for cardiac health and prognosis.
Purpose of the Study:
- To investigate the association between hematologic parameters and impaired left ventricular systolic function in patients with stable MVCAD.
- To identify potential biomarkers for predicting left ventricular dysfunction in this patient group.
Main Methods:
- A cohort of 202 patients with stable angina and MVCAD was analyzed.
- Patients were categorized into preserved (LVEF >50%) and impaired (LVEF <50%) left ventricular ejection fraction (LVEF) groups based on echocardiography.
- Hematologic parameters, including hs-CRP and N/L ratio, were compared between groups.
Main Results:
- The impaired LVEF group had higher frequencies of diabetes mellitus, elevated hs-CRP levels, and increased N/L ratios compared to the preserved group.
- Significant negative correlations were observed between LVEF and both hs-CRP and N/L ratio.
- N/L ratio >3.0 demonstrated 77% sensitivity and 68% specificity for predicting left ventricular dysfunction and was identified as an independent predictor.
Conclusions:
- Neutrophil-to-lymphocyte ratio (N/L ratio) and high-sensitivity C-reactive protein (hs-CRP) are independently associated with impaired left ventricular systolic function in stable MVCAD.
- These easily measurable and inexpensive laboratory markers can aid in identifying patients at risk for left ventricular dysfunction.
Objectives:
Multi-vessel coronary artery disease (MVCAD) has long been recognized as an important predictor of adverse outcomes in patients with chronic stable angina. The aim of this study is to investigate the relationship between hematologic parameters and impairment of left ventricular systolic functions in patients with stable MVCAD.
Study Design:
Patients (n=202) with stable angina and MVCAD were included in this study. According to the left ventricle ejection fraction (LVEF) determined by echocardiography, patients were divided into two groups as the preserved group (LVEF >50%) and the impaired group (LVEF <50%). The preserved group consisted of 106 patients and the impaired group consisted of 96 patients.
Results:
The frequency of diabetes mellitus was significantly higher in the impaired group compared to the preserved group (respectively, 50% vs. 33%, p=0.01). High sensitivity C-reactive protein (hs-CRP) levels and, neutrophil/lymphocyte ratio (N/L ratio) were significantly higher in the impaired group than in the preserved group (3.9±2.4 vs. 7.9±3.8, p<0.001; 2.7±0.7 vs. 3.9±1.2, p<0.001, respectively). There was a significant correlation between LVEF, N/L ratio and hs-CRP; hs-CRP and N/L ratio were positively correlated (r=0.584; p<0.001), and LVEF was negatively correlated with both hs-CRP and N/L ratio (r=-0.48, p<0.001 and r=-0.43, p<0.001, respectively). A N/L ratio >3.0 had 77% sensitivity and 68% specificity in predicting left ventricular dysfunction in patients with stable MVCAD. In multivariate analysis, N/L ratio (OR: 2.456, <95% Cl 2.056-4.166; p<0.001) was an independent predictor of left ventricular dysfunction in stable patients with MVCAD.
Conclusion:
N/L ratio and hs-CRP, which is inexpensive and easily measurable in the laboratory, is independently associated with impaired LV systolic functions in patients with stable MVCAD.
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