Introduction: The human-computer interaction is essential in simulated electronic systems associated with teaching-learning activities. Interactive clinical cases reinforce the diagnostic reasoning ability, a stage of the advanced Nursing Process.
Purpose: To build educational software, based on NANDA International, to improve the accuracy of nursing diagnoses.
Method: Methodological study in three stages: preparation and validation of case studies; construction; homologation and evaluation. Held between January / 2012 and December / 2013, in a university hospital in southern Brazil. Teachers, nurses, undergraduate students and graduate students in nursing and information technology participated. Approved by the Research Ethics Committee (130035).
Results: Construction of five case studies and two versions of the software: one simulates the reasoning process for establishing the diagnosis; another, aimed at teachers, makes it possible to edit/create cases.
Conclusion: The software helps in the teaching-learning process, generating accurate diagnoses, supporting more appropriate interventions.