Abstract
The risk of thrombosis significantly increases with age. In people under 40 years the incidence of thromboembolism is presumed in 1 of 10 000 persons, while in people above 75 years it occurs in 1 of 100 persons.
It is not quite clear what is the main cause of the relation between the venous thrombosis and the age. The most probably it is a combination of the decrease of mobility, the decline of muscular tension, the increase of morbidity and the changes of vascular wall.
As the age-related venous thromboembolism can be considered also the cases of thromboembolism originated during the hormonal therapy in post-menopausal women. It is also the concentration of coagulative factors, especially the VIII, II and IX factor, which increases with ageing.