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Published on: April 1, 2015
The relationship between fibrinogen and in-hospital mortality in patients with type A acute aortic dissection
Jun Liu1, Lian-Lian Sun1, Jue Wang2
1Division of Cardiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, PR China.
Insights
Low fibrinogen levels on admission predict higher in-hospital mortality in patients with type A acute aortic dissection (AAD). This finding highlights fibrinogen
Area of Science:
- Cardiovascular Medicine
- Hematology
- Critical Care Medicine
Background:
- Fibrinogen is crucial for hemostasis and thrombosis.
- Fibrinogen levels have prognostic value in cardiovascular diseases.
Purpose of the Study:
- To evaluate fibrinogen as a prognostic indicator in type A acute aortic dissection (AAD).
Main Methods:
- Consecutive patients with type A AAD within 24 hours of symptom onset were studied.
- Fibrinogen levels were measured on admission.
- In-hospital mortality was the primary endpoint.
Main Results:
- 143 patients with type A AAD were analyzed.
- Nonsurvivors had significantly lower fibrinogen levels (1.95 g/L) compared to survivors (2.37 g/L).
- An admission fibrinogen level < 2.17 g/L was independently associated with increased in-hospital mortality (OR 5.527).
Conclusions:
- Low admission fibrinogen levels are an independent predictor of in-hospital mortality in type A AAD patients.
Background And Purpose:
Fibrinogen plays an important role in hemostasis and thrombosis and is proven to have prognostic significance in patients with cardiovascular disease. We examined the utility of fibrinogen as a prognostic indicator for patients with type A acute aortic dissection (AAD).
Methods:
This study was performed in consecutive patients with type A AAD admitted to our hospital within 24 hours after onset of symptoms. Fibrinogen levels were measured on admission. Baseline clinical characteristics and laboratory test results were collected. The endpoint was in-hospital mortality.
Results:
A total of 143 patients with type A AAD were enrolled. Compared with the survivors, the nonsurvivors had significant lower fibrinogen levels (1.95(1.37, 2.38) vs. 2.37(1.85, 3.15) g/L, p=0.001). The cutoff level of fibrinogen determined by ROC curve analysis was 2.17 g/L, with a sensitivity, specificity of 71.9%, 60.4% respectively, and the area under the ROC curve was 0.686 (95% CI, 0.585-0.768; p=0.001). After controlling for potentially relevant confounding variables, we found an admission fibrinogen level less than 2.17g/L was associated with an increased risk of in-hospital mortality (odds ratio, 5.527; 95% CI, 1.660-18.401; p=0.005) compared with those with fibrinogen greater than 2.17g/L.
Conclusion:
Low fibrinogen level on admission is an independent predictor of in-hospital mortality in patients with type A AAD.
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