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Published on: November 19, 2019
Association between Plasma Fibrinogen Level and Saphenous Vein Graft Patency
Sinan Cersit1, Serkan Cay1, Yavuzer Koza2
1Department of Cardiology, Yuksek Ihtisas Heart-Education and Research Hospital, Ankara;
Insights
Elevated plasma fibrinogen levels are linked to blocked saphenous vein grafts after coronary artery bypass graft (CABG) surgery. Higher fibrinogen indicates a greater risk of graft occlusion, suggesting its role in atherosclerosis progression.
Area of Science:
- Cardiovascular Science
- Vascular Biology
- Biochemistry
Background:
- Fibrinogen plays a role in atherosclerosis pathogenesis.
- Inflammation associated with atherosclerosis can elevate plasma fibrinogen.
- Investigating fibrinogen's association with saphenous vein graft patency post-coronary artery bypass graft (CABG) surgery is crucial.
Purpose of the Study:
- To determine if plasma fibrinogen levels are associated with the patency of saphenous vein grafts.
- To evaluate the relationship between fibrinogen and graft status at least one year after CABG surgery.
Main Methods:
- Study included patients with at least one saphenous vein graft at least 1 year post-CABG.
- Patients underwent cardiac catheterization for anginal symptoms or positive stress tests.
- Plasma fibrinogen levels were assessed via routine blood tests before coronary angiography.
Main Results:
- Saphenous vein grafts were patent in 199 patients and occluded in 132.
- Significantly higher plasma fibrinogen levels were observed in patients with occluded grafts (3.62 ± 0.82 g/L) compared to patent grafts (2.85 ± 0.49 g/L).
- Logistic regression confirmed plasma fibrinogen levels as a significant predictor of vein graft patency (OR=0.27, p<0.001).
Conclusions:
- Plasma fibrinogen levels are elevated in patients experiencing saphenous vein graft occlusion post-CABG.
- Further research is needed to definitively establish the link between fibrinogen levels and saphenous vein graft patency.
Background:
Fibrinogen is related to the pathogenesis of atherosclerosis. The inflammatory process in atherosclerosis may cause an increase in plasma fibrinogen level. Therefore, in this study we proposed to investigate whether plasma fibrinogen is associated with the patency of saphenous vein graft in patients at least 1 year after coronary artery bypass graft (CABG) surgery.
Methods:
Patients who had undergone CABG surgery at least 1 year previously with at least one saphenous vein graft were included in the study. Patients were directed to cardiac catheterization for stable anginal symptoms or positive stress test results. Before coronary angiography, all patients underwent routine blood tests including assessment of plasma fibrinogen levels.
Results:
Saphenous vein grafts were found to be patent in 199 patients and occluded in 132 patients. Plasma fibrinogen levels were significantly different between the two groups (2.85 ± 0.49 g/L vs. 3.62 ± 0.82 g/L, p < 0.001, respectively). Although the time duration after CABG operation differs significantly between the two groups (p = 0.004), multiple logistic regression analysis showed that plasma fibrinogen levels were found to be significantly associated with the patency of vein graft (odds ratio = 0.27, 95% confidence internal: 0.16-0.48, p < 0.001).
Conclusions:
Our results demonstrated that plasma fibrinogen levels were higher in patients with an occluded saphenous vein graft. To conclusively prove the relationship between plasma fibrinogen values and saphenous vein graft patency, additional investigation would be necessary.
Key Words:
Atherosclerosis; Coronary artery bypass graft; Fibrinogen; Saphenous vein.
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