Which immunoglobulin is specific to an allergic response?

Correct Answer: B

Rationale: IgE is the immunoglobulin specific to an allergic response. When an individual is exposed to an allergen, the immune system produces IgE antibodies that bind to mast cells and basophils. Upon re-exposure to the same allergen, these IgE antibodies trigger the release of histamine and other chemicals that cause allergic symptoms such as itching, swelling, and inflammation. IgE is not normally found in high concentrations in the bloodstream unless there is an allergic reaction occurring. Other immunoglobulins like IgA, IgG, and IgM are not specifically associated with allergic responses.

Correct Answer: C

Rationale: Zidovudine (AZT) is an antiretroviral drug used to treat HIV infection, including in AIDS patients. It is important to follow the prescribed dosing schedule to maintain consistent drug levels in the body and effectively control the HIV virus. Taking zidovudine every 4 hours around the clock helps ensure the medication's therapeutic effects are maintained throughout the day. It is crucial for the client to adhere to the prescribed dosing regimen to prevent the development of drug resistance and to achieve the best treatment outcomes. Taking zidovudine with meals, on an empty stomach, or taking over-the-counter drugs for minor adverse reactions are not the correct instructions related to the dosing schedule of zidovudine.

Correct Answer: C

Rationale: Blood cells are formed in the bone marrow, which is a soft tissue found in the center of most bones in the body. The process of blood cell formation is known as hematopoiesis. Bone marrow contains stem cells that can develop into different types of blood cells, including red blood cells, white blood cells, and platelets. These blood cells play essential roles in carrying oxygen, fighting infections, and assisting in blood clotting. While the other choices listed (arterioles, lymphoid tissue, and muscle tissue) have important functions in the body, blood cell formation specifically occurs primarily in the bone marrow.

Correct Answer: B

Rationale: Option B, "I don't have to worry if I get a strep throat," shows that the client does not understand the cause of exacerbation of systemic lupus erythematosus (SLE). Strep throat can trigger SLE exacerbations as infections are known to worsen autoimmune diseases like lupus. This statement indicates a lack of awareness regarding the potential impact of infections on SLE symptoms. Option A and C show a better understanding as they address the importance of diet and stress management, which are significant factors that can influence the course of SLE.

Correct Answer: C

Rationale: The normal hemoglobin values are typically expressed in grams per deciliter (g/dL) or grams per 100 milliliters (g/100mL) of blood. The range of 12 to 18 g/100mL is considered the normal range for hemoglobin levels in adults. Hemoglobin values outside of this range may indicate various health conditions such as anemia or polycythemia. Option A (38% to 48%) is a range for hematocrit, not hemoglobin. Option B (48 to 54 mg%) and Option D (27 to 36 g/dL) are not within the standard normal range for hemoglobin levels.