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[Anticoagulation in patients with cardiac valve prostheses]
Domenico Paparella1, Chiara d'Agostino, Luigi de Luca Tupputi Schinosa
1Istituto di Cardiochirurgia, Dipartimento d'Emergenza e Trapianti d'Organo, Università, Bari. paparella@tin.it
Insights
Patients with artificial heart valves need anticoagulation to prevent blood clots. This guide offers updated recommendations for anticoagulant therapy based on valve type and patient factors, including special situations like pregnancy.
Area of Science:
- Cardiology
- Hematology
- Pharmacology
Context:
- Patients with heart valve prostheses have an elevated risk of thromboembolic events.
- Anticoagulation is frequently necessary post-heart valve replacement surgery.
- Thromboembolic risk is influenced by prosthesis design, patient factors, and anticoagulation effectiveness.
Purpose:
- To review current understanding of thrombus formation pathophysiology.
- To discuss pharmacological properties of common anticoagulants.
- To provide evidence-based suggestions for anticoagulation regimens.
Summary:
- Discusses advances in understanding thrombus formation and anticoagulant pharmacology.
- Offers tailored anticoagulation strategies based on randomized clinical trials, considering prosthesis type, implant site, and patient characteristics.
- Highlights management of complex scenarios like pregnancy and major hemorrhage requiring anticoagulation interruption.
Impact:
- Aims to optimize anticoagulation management in patients with heart valve prostheses.
- Provides guidance for clinicians to reduce thromboembolic events and manage bleeding risks.
- Contributes to improved patient outcomes following heart valve replacement.
Abstract:
Patients with heart valve prostheses carry a higher risk of thromboembolic events compared to the normal population. In many cases anticoagulation is required after heart valve replacement. Thromboembolic risk is related to valve prosthesis design, patient own characteristics and adequacy of anticoagulation. Recent advance in the understanding of the pathophysiology of thrombus formation and pharmacological characteristics of most used anticoagulants are discussed. Suggestions for anticoagulation regimen are given according to recent randomised clinical trials based on prosthesis type, site of implant and patients clinical characteristics. Emphasis is given for cumbersome situations such as pregnancy and major hemorrhage in which anticoagulation has to be interrupted.
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