Which is a correct full formula for a nursing diagnosis?

• A. Problem R/T Etiology AEB Defining Characteristics
• B. Problem R/T Etiology
• C. Problem R/T Etiology AEB (Incomplete)
• D. Problem R/T Etiology AEB Defining Characteristics

Answer: (D)

A complete nursing diagnosis must tie the problem to its cause and to the evidence from assessment. The statement should include the diagnostic label (the problem), a related-to link to the etiologic factor, and evidence that supports the diagnosis (as evidenced by, with defining characteristics). This full structure shows not only what is happening, but why it is happening and what data confirm it, making the diagnosis actionable and monitorable. Without the etiology, the underlying factor isn’t identified; without the defining characteristics, there’s nothing to anchor the diagnosis to actual observed data. With all parts present, the statement becomes: problem related to etiology as evidenced by defining characteristics. For example: Impaired physical mobility related to muscular weakness as evidenced by limited range of motion, difficulty with transfers, and patient-reported pain during movement.