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Which of the following is a primary immunodeficiency disorder?

A.

Human immunodeficiency virus (HIV) infection

B.

Common variable immunodeficiency (CVID)

C.

Rheumatoid arthritis

D.

Diabetes mellitus

Answer and Explanation

The Correct Answer is B

Explanation: The correct answer is b. Common variable immunodeficiency (CVID). CVID is an example of a primary immunodeficiency disorder, which is typically caused by genetic mutations affecting the immune system's development and function.

Incorrect choices:

a. Human immunodeficiency virus (HIV) infection is an example of a secondary immunodeficiency disorder, which occurs due to an external factor, such as a viral infection, damaging the immune system.

c. Rheumatoid arthritis is an autoimmune disorder that affects the joints and is not classified as an immunodeficiency disorder.

d. Diabetes mellitus is a metabolic disorder involving insulin production and does not directly affect the immune system's function.


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Related Questions

Correct Answer is D

Explanation

Explanation: The correct answer is d. Immunoglobulin replacement therapy is a common treatment option for patients with primary immunodeficiency disorders. It involves infusing patients with immunoglobulins (antibodies) to help boost their immune response and protect against infections.

Incorrect choices:

a. Allergy shots are used to desensitize the immune system to specific allergens in individuals with allergies, not to treat primary immunodeficiency disorders.

b. Immunosuppressive medications are used to suppress the immune response in conditions such as autoimmune diseases or after organ transplantation, but they are not typically used to treat primary immunodeficiency disorders.

c. Blood transfusions may be used to treat anemia or certain blood disorders, but they are not a specific treatment for primary immunodeficiency disorders.

Correct Answer is C

Explanation

Explanation: The correct answer is c. Serum immunoglobulin levels. A primary immunodeficiency disorder often results in abnormal levels of immunoglobulins (antibodies) in the blood. Measuring serum immunoglobulin levels can help identify potential deficiencies and guide the diagnosis of primary immunodeficiency disorders.

Incorrect choices:

a. Enzyme-linked immunosorbent assay (ELISA) is a test used to detect specific antibodies or antigens in the blood, but it is not specific to diagnosing primary immunodeficiency disorders.

b. A chest X-ray is not a specific test for diagnosing primary immunodeficiency disorders. It is typically used to assess the condition of the lungs and chest organs.

d. A complete blood count (CBC) is a general blood test that may reveal abnormalities in white blood cell count but does not specifically assess immunoglobulin levels.

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