Interprofessional relationships may impact the decision making of patients in a clinical setting. The objective of this study was to analyse the decision-making capabilities of patients from nurses' perspectives of interprofessional relationships using Foucauldian ethics. This qualitative study was based on poststructuralist Foucault references with in-depth interviews of nurses working in internal medicine and specialties in a general hospital. The patients constantly appeared in the definition of teamwork, but also as a passive element used by every professional to communicate with others. Nurses continue modelling a type of patient passivity, or what Foucault called passive subjectivity in relation to oneself, because the patient is guided and directed to take charge of a truth provided by professionals. Nurses must break the rigid design of sections or professional skills, and adopt a model of teamwork that meets the needs of the patient and increases their decision-making power. The quality of care will increase to the extent that professionals establish a relationship of equality with the patient, allowing the patient to make real decisions about their care. An egalitarian model of teamwork is beneficial to the patient, abandoning the idea of a team where the patient and family are constantly excluded from decisions about their care.