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Increased d-dimer levels predict cardiovascular mortality in patients with systolic heart failure
Ali Zorlu1, Mehmet Birhan Yilmaz, Hasan Yucel
1Departments of Cardiology, Cumhuriyet University Medical School, Sivas, Turkey.
Insights
Elevated D-dimer levels in patients with systolic heart failure (HF) indicate a higher risk of cardiovascular death. A D-dimer level above 1435 ng/ml is a significant predictor of mortality in these patients.
Area of Science:
- Cardiology
- Internal Medicine
- Biomarkers
Background:
- D-dimer, a fibrin degradation product, is linked to cardiovascular pathologies.
- Thrombosis and inflammation in systolic heart failure (HF) patients may predict poor outcomes.
Purpose of the Study:
- To investigate the association between D-dimer levels and cardiovascular mortality in hospitalized systolic HF patients.
- To identify D-dimer as a potential prognostic marker for cardiovascular death in HF.
Main Methods:
- Evaluated 174 consecutive hospitalized systolic HF patients.
- Measured D-dimer levels within 24 hours of admission.
- Followed patients for cardiovascular mortality.
Main Results:
- D-dimer levels were significantly higher in patients who died (2727 ng/ml) versus those who survived (1029 ng/ml).
- An optimal cut-off level of >1435 ng/ml for D-dimer predicted cardiovascular mortality.
- Multivariate analysis identified D-dimer >1435 ng/ml, creatinine, and atrial fibrillation as independent predictors of death.
Conclusions:
- D-dimer measurement can aid in the risk stratification of patients with systolic heart failure.
- Elevated D-dimer levels are associated with increased cardiovascular mortality in systolic HF.
Abstract:
D-dimer is a fibrin degradation product, and is implicated in pathologies of cardiovascular system. Thrombosis within the vascular system in relation with inflammation and stasis might be associated with poor prognosis in patients with systolic heart failure (HF). In this study we aimed to investigate for relationship between d-dimer levels and cardiovascular mortality in patients with systolic HF. A total of 174 consecutive patients with hospitalized systolic HF were evaluated. All hospitalized patients were obtained d-dimer levels within the first 24 h following admission after obtaining informed consent. Patients were followed up for cardiovascular mortality and 40 (23%) patients died. d-dimer levels were higher among those who died compared to those who survived (2727 ± 2569 (710-4438) versus. 1029 ± 1319 (303-1061) ng/ml, P < 0.001). Optimal cut-off level of d-dimer to predict cardiovascular mortality was found to be >1435 ng/ml. D-dimer levels were negatively correlated with ejection fraction, positively correlated with left atrium size and left ventricular diastolic diameter. D-dimer >1435 ng/ml, age, diabetes mellitus, presence of atrial fibrillation, and creatinine level were found to have prognostic significance in univariate analyses. In multivariate Cox proportional-hazards model, d-dimer > 1435 ng/ml (HR = 3.250, 95% CI 1.647-6.414, P = 0.001), creatinine level (HR = 1.269, 95% CI 1.008-1.599, P = 0.043), and presence of atrial fibrillation (HR = 2.159, 95% CI 1.047-4.452, P = 0.037) remained associated with an increased risk of death after adjustment for variables found to be statistically significant in univariate analysis and correlated with d-dimer level. In conclusion, d-dimer measurement could help risk stratification in patients with systolic HF.
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