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Objective: to evaluate the self-reported knowledge of the medical and nursing teams regarding bloodstream infection prevention measures related to the central venous catheter. Methods: a cross-sectional study carried out at the intensive care unit of a large State run emergency hospital in Belo Horizonte, Minas Gerais (Brazil). The population was composed of doctors, nurses and nurse technicians responsible for the insertion and maintenance of central venous catheters. A face-to-face interview was conducted, and a structured questionnaire was used as the research instrument. In order to know the distribution of the data, descriptive statistics was used and for the analysis of the factors associated with knowledge the Poisson regression with robust variance was implemented. The considered significance level was 5% (p <0.05) and the confidence interval was 95%. The Shapiro-Wilk test was used to verify the normality of the data. Results: the self-reported knowledge median in the different researched questions was 42.8%. In the evaluation of knowledge regarding the catheter insertion, the percentage of self-reported knowledge of the doctors was 100%. On the contrary, the maintenance measures reported by the nursing team were lower than 50%, highlighting hub disinfection (35%) and duration of disinfection (7.2%). Conclusion: in a general overview of the eligible questions for the evaluation of team knowledge, a limited knowledge of the measures, considered gold standard in the prevention of central venous catheter-related bloodstream infection, was verified, reinforcing the importance of continuous education and further discussion regarding the prevention of this infection. DESCRIPTORS: Catheter-related infections. Intensive care units. Patient safety. Central venous catheters. Knowledge. CONHECIMENTO AUTORREFERIDO DAS EQUIPES MÉDICA E DE ENFERMAGEM QUANTO ÀS MEDIDAS DE PREVENÇÃO DE INFECÇÃO DA CORRENTE SANGUÍNEA