RESUMEN
Background and Purpose: To describe the process of developing and validating the content of the Patient Advocacy Scale for Nurses in Intensive Care (EAPEnf-UTI). Methods: Methodological research. To achieve the elaboration objective, five stages were developed: (a) definition of the theme, (b) generation of the number of items, (c) determination of the measurement format, (d) validation of face and content, and (e) content adjustment. Results: The instrument elaborated from a survey and integrative literature review, and the measurement format chosen was the 5-point Likert scale. The validation of face and content was performed by expert judges and by pretest. The final instrument had 57 items. Conclusion: EAPEnf-UTI is a pioneering instrument built in the Brazilian context, whose future validation will allow the capturing of situations specific to intensive care units and the professional practice of intensive care nurses.