This study investigates the argumentation of a cohort of students at the beginning of their post-degree. In the case of professionals seeking greater validation, it is worth knowing the scope that epistemological reflection provides in an institutionalized framework that is traditionally unfavorable to them. With the consent of the students of the post-title Ventilatory Dysfunction 2018 and through the construction of a modified trial that previously received the support of cognitive, procedural and attitudinal content related to the subject, a content analysis was carried out to identify the categories considered relevant to obtain the status of professional expertise. In the findings, the explicit recognition of the epistemological bases is assigned and highlighted to the foundations that organize consequences and substantive effects for the post title in question. The related and necessary variables to demarcate the specialty and the consequences of their social responsibility are discussed.