Final answer:
An advanced practice nurse in a psychiatric setting often has the additional capability to prescribe psychotropic medication, reflecting their advanced education and clinical expertise in mental health.
Step-by-step explanation:
The question asks which additional intervention a staff nurse can expect an advanced practice nurse (APN) to perform after completing orientation to a psychiatric unit. An advanced practice nurse, such as a psychiatric-mental health nurse practitioner (PMHNP), may have additional responsibilities compared to a staff nurse, including the ability to prescribe psychotropic medication, conduct in-depth mental health assessments, and sometimes engage in therapy to establish therapeutic relationships. While all nurses individualize nursing care plans, the ability to prescribe medication typically requires additional advanced education, clinical experience, and certification.