Final answer:
The expected finding when assessing a stuporous client is that they arouse briefly in response to a sternal rub, which is a strong stimuli, demonstrating a simple response to pain.
Step-by-step explanation:
A client who is stuporous will not be fully conscious or alert, and will typically exhibit a limited response to stimuli. This is demonstrated by a patient who arouses briefly in response to strong stimuli, such as a sternal rub, which is a painful stimulus applied to the sternum or chest area. This response aligns with option A, "The client arouses briefly in response to a sternal rub." In this state, a client is not fully awake but may respond to stimuli like pain with a simple response.
Stupor is one of the conditions assessed in the Glasgow Coma Scale (GCS), but a score less than 7 often indicates a state of coma, not stupor, as seen in option B. Decorticate rigidity (option C) is associated with a more severe brain injury and does not necessarily correlate with stupor. Finally, being alert but disoriented to time and place (option D) defines confusion rather than stupor.