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Are symptomatic endpoints acceptable in venous thromboprophylactic studies?
1Department of Clinical Medicine, General Infirmary and University of Leeds, UK.
Haemostasis
|March 9, 1999
Summary
Low-molecular-weight heparin reduces deep vein thrombosis. Large trials are needed to assess its effect on fatal pulmonary embolism and bleeding risk, using clinical endpoints.
Area of Science:
- Medical research
- Clinical trials
- Thromboprophylaxis
Background:
- Subcutaneous low-molecular-weight heparin (LMWH) is used for chemoprophylaxis.
- Previous studies used surrogate endpoints like fibrinogen scanning and venography.
- Few trials have assessed clinical outcomes of pulmonary embolism post-surgery.
Purpose of the Study:
- To evaluate the efficacy of chemical thromboprophylaxis using clinical endpoints.
- To assess the risk of hemorrhage associated with chemoprophylaxis.
- To determine the benefit of clinical endpoints versus bleeding risk.
Main Methods:
- Conducting large-scale trials.
- Utilizing clinical endpoints such as vascular mortality and morbidity.
- Monitoring the incidence of hemorrhage.
Main Results:
- Chemoprophylaxis efficacy requires assessment via clinical endpoints.
- Large trials are necessary due to the rarity of clinical events.
- Balancing treatment benefits against bleeding risks is crucial.
Conclusions:
- Current evidence on LMWH for preventing fatal pulmonary embolism is limited.
- Future research should prioritize large-scale trials with clinical endpoints.
- The risk-benefit ratio of chemoprophylaxis, including bleeding complications, needs thorough evaluation.
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