Final answer:
The nurse is utilizing Dorothea Orem's Self-Care Deficit Nursing Theory by providing care to a patient who cannot perform self-care activities due to a stroke.
Step-by-step explanation:
The nurse in this scenario is applying the theory developed by Dorothea Orem. Orem's Self-Care Deficit Nursing Theory postulates that nurses should provide care and assistance to patients who are unable to fulfill their own self-care needs due to a health condition or limitation. In this case, as the patient is dealing with a stroke and right-sided weakness and thus cannot bathe or feed themselves, the nurse steps in to provide these care activities.