We do not have epidemiologically relevant data about venous thrombosis prevalence in Croatia. The knowledge about the actual prevalence of the disease is only partially possible because it applies only to patients treated in hospital. (1, 2)

According to data obtained from the databases Croatian Information System on Health / Croatian Health Insurance Fund in 2015 there was 1925 patients with DVT (deep vein thrombosis) treated in hospitals.

Working Group on Angiology and Peripheral Vascular Diseases of the Croatian Cardiac Society has an initiative for formation of a national registry in order to obtain an epidemiological data of population morbidity, mode of treatment and prevention of venous thrombosis. We will present the results of a prospective epidemiological study in the Clinical Hospital Centre Zagreb, which should represent a pilot study that could be a model for the formation of a national Registry “Venous Thrombosis”.

Questionnaire (Figure 1) includes the relevant data relating to the etiology of DVT, scope and localization of the disease, complications of disease, mode of mandatory and long-term treatment, as well as possible complications during treatment.

Results of one center collected in period of 9 months during 2016, included a total of only 71 patients. It is a relatively small number of patients whose results will be processed by electronic database. We will display it according to the etiology, mode of treatment and monitoring as well as appearance and evidence of complications of treatment.