Abstract
Objective by means of the Clinical Simulation we try to favor the acquisition of nursing competences in surgical instrumentation necessary in the real practice and to diminish the incidence of the stress in the surgical area in the novel personnel. This learning has as a priority the safety of the patient, in the globality of the term.
Design: randomized experimental study, control group pre-test open and parallel post-test, analyzing a sample of 30 students (novice surgical nurses), 15 of which will perform simulated sessions plus a subsequent debriefing session and 15 will not perform any type of simulation. Both groups will attend the formative classes regulated by the educational center. The main variables will be acquisition of the necessary skills in ALM instrumentation, anxiety, stress.
The variables will be analyzed using the Demand-Control (DC) model scale from Karasek in the stress assessment and competency questionnaire. The collected data will be exported to the Epinfo 7.2 program for further analysis.
KEY WORDS: stress, simulation, competences, learning

Teaching project in surgical instrumentation of Lumbar Arthrodesis Multilevel by Clinical Simulation