The aim of the research: The aim of this research is to examine the knowledge of basic life support measures for adults among nursing students in relation to age, gender, year of study and previous education. Structure of the study: A cross-sectional study was conducted at the Nursing study at the Faculty of Dental Medicine and Health during March and April 2022. Respondents and methods: 90 respondents participated in the research, of which 25 (28 %) were men and 65 (72 %) were women. A knowledge test was used, and the content was related to basic life support measures. Results: 75 (83 %) respondents know that when checking breathing in adults, the head should be completely thrown back and the chin raised, furthermore 66 (74 %) respondents know that external heart massage is performed at a speed of 100 to 120 pressures per minute. Out of a total of 90 respondents, 53 of them (59 %) know that the breathing check is not carried out for longer than 10 seconds, and 75 (84 %) of the respondents know that upon arriving at the place where the person is lying motionless, the safety of the environment should first be assessed. Also, 82 (92 %) respondents know that people who are unconscious and breathing normally are placed in the lateral position. Conclusion: Four fifths of the respondents have satisfactory knowledge of the basic life support measures for adults, there are no significant differences in knowledge with regard to gender, age of the respondent and completed high school and no significant differences in relation to the year of study. The largest number of respondents with unsatisfactory results are in the first year study.