Final answer:
A positive response to the prescribed HIV treatment can be indicated by an increase in the number of CD4 T cells.
Step-by-step explanation:
A positive response to the prescribed HIV treatment can be indicated by an increase in the number of CD4 T cells. CD4 T cells are a type of immune cell that is targeted and destroyed by the HIV. Therefore, an increase in CD4 T cells suggests that the immune system is responding positively to the treatment and the virus is being suppressed.
For example, if a nurse is caring for a client with HIV and their CD4 T cell count increases from 500 cells/μL to 800 cells/μL after starting treatment, it would indicate a positive response to the prescribed HIV treatment.