Texas Health Resources, which operates 24 hospitals in north Texas, is using clinical decision support software to identify patients at risk for venous thromboembolism--blood clots that are a common cause of hospital deaths. The interactive Web application is based on a modified Caprini Risk Assessment model, which is used to assess the likelihood that a patient will develop the dangerous clots. When a clinician clicks on VTE risk assessment, the tool is populated with data from the patient's electronic health record, including diagnosis, procedures, and lab results. The clinician can select additional risk factors, and the app calculates a risk assessment score and suggests treatment to meet the patient's needs. The VTE risk assessment tool has contributed to a more than 20% reduction in postoperative blood clots since its implementation. And physicians are more actively engaged in VTE prevention as patient risk assessment has become more automated.