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Impaired fibrinolytic capacity predisposes for recurrence of venous thrombosis
Insights
Patients with reduced fibrinolytic capacity (ELT > 60 min) face a higher risk of recurrent venous thrombosis and pulmonary embolism. Assessing fibrinolysis aids in predicting recurrence risk after initial thromboembolic events.
Area of Science:
- Cardiovascular Medicine
- Hematology
- Thrombosis Research
Background:
- Venous thromboembolism (VTE), including deep vein thrombosis and pulmonary embolism, poses significant health risks.
- Recurrence of VTE is common, necessitating methods to identify high-risk individuals.
- Fibrinolytic capacity, the body's ability to break down blood clots, is a potential marker for VTE risk.
Purpose of the Study:
- To evaluate the relationship between fibrinolytic capacity and the risk of recurrent venous thrombosis.
- To determine if fibrinolytic function can predict future thromboembolic events in patients with a history of VTE.
Main Methods:
- Assessed fibrinolytic capacity using the venous occlusion technique in 121 patients with a history of VTE.
- Monitored patients for new thromboembolic episodes after discontinuing anticoagulation for an average of 56 months.
- Calculated recurrence rates based on post-occlusion Euglobulin Lysis Time (ELT).
Main Results:
- A total of 45 out of 121 patients experienced recurrent thrombosis during the follow-up period.
- Patients with a shorter post-occlusion Euglobulin Lysis Time (ELT) (< 60 min) had a significantly lower annual recurrence rate (4.8%).
- Patients with a longer ELT (> 60 min) exhibited a higher annual recurrence rate (10.3%).
Conclusions:
- Fibrinolytic capacity is a valuable indicator for assessing the risk of recurrent venous thrombosis.
- Patients with impaired fibrinolysis are at increased risk for subsequent thromboembolic events.
- Measuring fibrinolytic function can help stratify VTE patients for risk-based management strategies.
Abstract:
The fibrinolytic capacity of 121 patients with a history of venous thrombosis and/or pulmonary embolism was studied by venous occlusion technique, at earliest 3 months after the last thromboembolic episode. After discontinuation of oral anticoagulation treatment the clinical course of the patients was followed and new thromboembolic episodes were noted. During the observation period of 56 +/- 18.8 months 45 of 121 patients experienced recurrence of thrombosis. The recurrence-rate was significantly lower in patients with a post-occlusion ELT shorter than 60 min (4.8%/year) than in patients with an ELT longer than 60 min (10.3%/year). It is concluded that the fibrinolytic capacity is a useful parameter for determining the risk of recurrence in patients with venous thrombosis.