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[Valvular prosthesis and anticoagulant treatment]
Archives Des Maladies Du Coeur Et Des Vaisseaux
|October 1, 1974
Summary
Prosthetic valve replacement patients on anticoagulant therapy experienced few thromboembolic events. However, efficient anticoagulation in some patients still led to thrombosis, suggesting other risk factors may be involved.
Area of Science:
- Cardiovascular Surgery
- Hematology
Context:
- Prosthetic heart valve replacement is a common procedure.
- Long-term anticoagulation is standard for patients with prosthetic valves.
Purpose:
- To evaluate the incidence of thromboembolic accidents in patients with prosthetic heart valves.
- To investigate the role of anticoagulant therapy efficacy in preventing thromboembolic events.
Summary:
- A study followed 67 patients with prosthetic heart valves (53 mitral, 24 aortic, 10 tricuspid) for up to 9.5 years.
- Patients were grouped based on anticoagulant treatment adherence and efficacy.
- While patients with stopped or inefficient treatment had no thromboembolic events, three cases (two fatal) occurred in those with efficient treatment (prothrombin time ≤40%).
Impact:
- Anticoagulant therapy is crucial but may not be the sole determinant of thromboembolic events.
- Further research is needed to identify additional risk factors for thrombosis in prosthetic valve patients.