RESEARCH OBJECTIVE: To determine the knowledge and training of nurses/technicians in the prevention of infections related to dialysis catheters. RESEARCH METHODOLOGY: The questionnaire was intended for all nurses/technicians in the Republic of Croatia, and 201 of respondents joined the research. The survey was conducted with a survey questionnaire during August and September 2021. The questionnaire was created via the Google Forms tool, and was accessed via a link, thus ensuring the anonymity of the respondents. The survey questionnaire is divided into two parts of objective and subjective type. The objective part of the questions refers to the demographic characteristics of the respondents - nurses and technicians. The subjective part of the questionnaire examines the competencies of nurses/technicians in the prevention of infections associated with dialysis catheters. The questions are of the closed type with dichotomously stipulated particles - I agree / disagree / I am not sure. After the collected answers, the data processing was performed using the IBM SPSS Statistics program. Descriptive statistics were used in data processing, and indicators are presented in frequencies (f) and percentages (%). RESULTS: The survey was filled out by 201 respondents, of which 94.5% were nurses and 5.5% were medical technicians. The largest share in the research are respondents aged 36 to 50 years (42.8%). According to the level of education, 54.2% of the respondents are Bachelors of Nursing, followed by nurses / technicians with secondary education with a share of 33.8%. Masters of Nursing are represented with 10.9%, and doctors of science with 0.5%. Of the total number of respondents, 78.6% work in the dialysis department. Many respondents, 98% agree that nurses and technicians can transmit the infection to patients who have a dialysis catheter with their own hands. 96% of respondents believe that hygienic hand washing and disinfection reduces the possibility of dialysis catheter infections. CONCLUSION: The role of the nurse/technician in preventing infections associated with dialysis catheters is indeed enormous. Through the survey, we noticed that our colleagues have a good insight in the issue of infections associated with dialysis catheters.