Which is the treatment of choice for severe aplastic anemia?

A. Positive Western blot test: A positive Western blot test confirms HIV infection but doesn't provide information about the current immune status or progression of the disease.

B. CD4-T-cell count 180 cells/mm³.

The CD4-T-cell count is a crucial indicator of a person's immune system function, and it's a primary marker used to monitor the progression of HIV infection. A CD4 count of 180 cells/mm³ is significantly below the normal range (which is typically higher), indicating immunosuppression and an increased risk of opportunistic infections. Maintaining and improving immune function is a top priority in the care of clients with HIV.

C. Platelets 150,000/mm³: Platelet counts are important, but they are not the primary indicator for assessing the progression of HIV.

D. WBC 5.000/mm³: The white blood cell count (WBC) is important for assessing overall immune function, but it doesn't provide the same specific information about the immune system status as the CD4-T-cell count.

A. Insulin is responsible for lowering blood glucose levels by promoting the uptake and storage of glucose in cells.

B. Epinephrine (adrenaline) can raise blood glucose levels in response to the "fight or flight" stress response, but it's not primarily responsible for stimulating liver glycogenolysis.

C. Glucagon is produced by the alpha cells in the islets of Langerhans and plays a crucial role in increasing blood glucose levels. It promotes the breakdown of glycogen (glycogenolysis) in the liver and the production of glucose from non-carbohydrate sources (gluconeogenesis).

D. Adrenocorticotropic hormone (ACTH) is produced by the anterior pituitary gland and stimulates the adrenal cortex to release cortisol, which can also contribute to raising blood glucose levels but isn't primarily responsible for liver glycogenolysis.

In the context of diabetes management, understanding the role of glucagon is important because it helps individuals know how to manage hypoglycemia (low blood sugar) by administering glucagon or consuming fast-acting sources of glucose.