Background: Learning through clinical simulation allows the development of technical and non-technical skills demonstrated in both undergraduate and graduate degrees. The level of self - confidence and satisfaction of the students, as well as, the good perception on the part of these is important and is relatedto the repetition of simulation sessions. Objective: In order to evaluate the impact of simulation on the level of confidence, satisfaction and perception in undergraduate students at a private university. Material and methods: A descriptive cross-sectional study was carried out. The sixth- year medicalstudents who were carrying out their high-fidelity simulation practices were invited to participate; they were administered the “Questionnaire on the level of confidence and satisfaction in hospital clinical simulation practices” and the exploratory questionnaire “Perception of...