Middle-range theory of the diagnosis of low situational self-esteem in undergraduate nursing students.

to elaborate a Middle-Range Theory for the diagnosis of situational low self-esteem in nursing students based on the mapping of scientific literature.

methodological study aimed at building a Middle-Range Theory, developed on the basis of the causal-theoretical model and based on Roy's Adaptation Model. The process was operationalized in six stages: (1) defining the approach to building the theory; (2) defining the theoretical-conceptual models; (3) identifying the key concepts; (4) drawing up a pictorial scheme; (5) formulating propositions; and (6) establishing causal relationships and evidence for practice.

five essential attributes, 15 antecedents and 23 clinical consequents were identified. The analysis of these elements enabled the development of the Middle-Range Theory, consisting of an illustrative diagram, eight propositions, 12 causal relationships and evidence for practice.

the small number of studies shows how little the subject has been explored in national and international contexts. The Middle-Range Theory broadened the understanding of the diagnosis of situational low self-esteem, offering support for nurses' work in the university context.

Background: (1) MRT introduces elements for nurses to use in clinical practice.

Background: (2) Broadens understanding of the diagnosis of situational low self-esteem.

Background: (3) Supports the advancement of practice and research related to the student care process.

Background: (4) Can serve as a guiding resource for implementing actions to address low self-esteem.