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A national house-staff audit of medical prophylaxis in medical patients for the PREVENTion of Venous ThromboEmbolism (PREVENT-VTE)We established a national audit to assess the thromboprophylaxis rate for venous thromoembolism (VTE) in at risk medical patients in acute hospitals in the Republic of Ireland and to determine whether the use of stickers to alert physicians regarding thromboprophylaxis would double the rate prophylaxis in a follow-up audit. 651 acute medical admission patients in the first audit and 524 in the second re-audit were recruited. The mean age was 66.5yrs with similar numbers of male and female patients and 265(22.6%) patients were active smokers. The first and second audits identified 549(84%) and 487(93%) of patients at-risk for VTE respectively. Of the at-risk patients, 163(29.7%) and 132(27.1%) received LMWH in the first and second audit respectively. Mechanical thromboprophylaxis was instigated in 75(13.6%) patients in the first and 86(17.7%) patients in the second audit. The placement of stickers in patient charts didnâ t produce a significant increase in the number of at risk patients treated in the second audit. There is unacceptably low adherence to the ACCP guidelines in Ireland and more complex intervention than chart reminders are required to improve compliance.