Patients are considered high risk patients if they have had a pulmonary embolism or arterial embolism within the last six months. They are also considered to be at high risk if they have had valvular heart disease with atrial fibrillation, a mechanical mitral valve, any mechanical valve with previous embolic events, previous arterial or venous thromboembolism, and conditions of thrombophilia with at least one thromboembolic event.
Se consideran de alto riesgo de tromboembolismo aquellos pacientes con tromboembolismo pulmonar o embolismo arterial ocurrido en los últimos 6 meses, enfermedad valvular cardíaca con fibrilación auricular, válvula mecánica mitral, cualquier válvula mecánica con episodios embólicos previos, tromboembolismo arterial o venoso previo, y estados de hipercoagulabilidad con al menos un evento tromboembólico.