A unified nursing diagnostic model.

The diagnostic model proposed in this article seeks to connect the taxonomic systems of the North American Diagnosis Association (NANDA) and the American Nurses Association (ANA). Pictured as an actual tree, the NANDA taxonomic labels are the roots; the ANA psychiatricmental health taxa, the supporting branches; the fruit, the NANDA diagnostic labels. A patient case vignette illustrates how the paradigm may be used as a clinical and research tool to validate each taxonomy, with the goal of creating a unified classification system for nursing phenomena.