Age is a Risk Factor for Poor Knowledge About Venous Thromboembolism Treatment

To limit complications and optimize anticoagulant therapy, some units treating venous thrombo embolism offer a formalized educational program to patients. In our clinic we developed a patient questionnaire to target aspects of patient knowledge about their venous thromboembolism (VTE) disease and their treatment that require reinforcement. The VTE questionnaire, composed of 7 questions, has been proposed to adult patients with a diagnosis of deep venous thrombosis or pulmonary embolism requiring anticoagulant therapy for at least 3 months. Patients who completed the VTE questionnaire between March 2022 and February 2023 were included in the present retrospective study. A poor score was defined as < 5 correct answers. We investigated the factors associated with a poor score on the questionnaire, using univariable and multivariable analysis, in order to better target patients education in our unit. A total of 132 patients were included. The majority were men (56.8%) and the mean (±SD) age was 55.4 (±18.3) years. The total score was < 5 in 43.2% of patients. Those with a poor score most frequently lacked knowledge regarding the treatment; only 22.8% of patients knew of the risk of bleeding, 5.3% the contraindication of non steroidal anti inflammatory drugs NSAIDs, and 19.3% knew of the precautions related to physical activity. In multivariate analysis the only factor associated with poor VTE questionnaire score was age ≥ 55 years (OR 2.61, 95%CI 1.14-5.94). Poor knowledge of venous thrombo embolism concerned older patients and particularly treatment-related aspects.