This study aimed at identifying the activities that characterize the nurse's professional performance as well as to know and to analyze the assistance methodology used to organize their actions. It is a research made through a qualitative approach and descriptive study, with subjects composed by twelve assistance nurses from a philanthropic hospital in Teresina-PI. The data were collected by interviews and fieldwork. After the interview analysis, one defined the three categories: Nurse's professional performance; assistance methodology: knowledge leading practice; Nursing Assistance Systematization (NAS) as methodology. The search results offered important elements to be rethought by nurses about their professional practice and methodology care.
Nursing; Professional practice; Methodology