ENDORSE (Epidemiologic International Day for the Evaluation of Patients at Risk for Venous Thromboembolism in the Acute Hospital Care Setting) study in 2006, was a multinational cross-sectional survey designed to assess the prevalence of venous thromboembolism (VTE) risk in the acute hospital care setting, and to determine the proportion of at-risk patients who receive appropriate prophylaxis. From the 358 randomly selected hospitals across 32 countries in the global registry, 9 Hungarian centers were included. According to the Hungarian results, the use of appropriate prophylaxis was more common in surgical patients but much less common in medical patients comparing to the worldwide average. ENDORSE 2-HUNGARY was a local survey to compare the prophylactic habits after two years and two months time period. In both surveys, the 2004 American College of Chest Physicians (ACCP) evidence-based consensus guidelines were used to assess venous thromboembolism risk and to determine whether patients were receiving recommended prophylaxis. The one day survey ENDORSE 2-HUNGARY was repeated beside seven already audited hospitals, and in two newly recruited hospitals. A total of 886 patients were assessed for thrombosis risk on the basis of hospital chart review. Of these patients 59.0% (N=523) were judged at risk for VTE, including 100% (N=327) surgical and 35.1% (N=196) medical patients. 67.9% (N=355) of the total at-risk patients received ACCP-recommended VTE prophylaxis. Among surgical patients, 84.4% (N=276) received recommended prophylaxis compared with 40.3% (N=79) of medical patients. Results of the ENDORSE in 2006 and 2009 were compared, as well. The rate of appropriate prophylaxis use in at-risk patients did not changed significantly in surgical patients, however, a significant, 43.9% increase was found in medical patients (p=0.002), that proves the success of lectures presenting the facts and focusing to increase medical prophylaxis during the time period between the two studies. 59.7% of at-risk medical patients and 15.6% of surgical patients were unprotected against thrombosis in 2009. We should further increase the rate of at-risk patients receiving appropriate prophylaxis. We should reinforce the rationale for the increase of awareness of VTE risk in hospitalized medical patients, and to enhance the prophylaxis practice among healthcare professionals.