The Significance of the Chronic Anticoagulant Treatment in Recurrent Thromboembolic Caused by Hereditary Antithrombin III Deficiency
It has been known since the publication of Egeberg (1965, 1970) and Marciniak (1974) that herditary antithrombin III deficiency could be the cause of recurrent venous thromboembolism.The authors observed in 5 cases of severe repeated venous thrombosis in young patients an antithrombin III decrease, which proved to be a hereditary abnormality. In the case of a 15 years old girl the late introduced anticoagulant treatment could not save the life of the patient, she died after repeated deep vein thrombosis. In the other cases the long-lasting anticoagulant treatment resulted in a perfect clinical improve, while the behaviour of antithrombin III was different; in some cases its quantity (determined by radial -immunodiffusion) and functional activity (examined by modified method of Gerendás and Rák) remained decreased, while in the other cases its functional activity increased during the anticoagulant treatment as it was found by Marciniak, too.It is most likely, that there are two types of hereditary antithrombin III decrease; in one of them the quantitative and functional decrease goes parallel, in the other there is mainly a functional decrease, which improves during the chronic anticoagulant treatment. The authors demonstrated the significance of the prolonged anticoagulant treatment in the patients with hereditary antithrombin III decrease.