The nurse is caring for a client suspected of having an immunodeficiency disorder. Which diagnostic test should the nurse anticipate being ordered to confirm the diagnosis?

Explanation: The correct answer is c. Allergic reactions and skin rashes are not typically associated with immunodeficiency disorders. Immunodeficiency disorders primarily result in an increased susceptibility to infections and recurrent, severe infections.

Incorrect choices:

a. Frequent, severe infections are a common symptom of immunodeficiency disorders due to the weakened immune response, making individuals more susceptible to infections.

b. Fatigue and weakness can occur in individuals with immunodeficiency disorders due to the impact of chronic infections on the body's energy reserves.

d. Delayed wound healing may occur in individuals with immunodeficiency disorders due to the impaired immune response and decreased ability to fight infections at the site of a wound.

The correct answer is c. Ataxia-telangiectasia. Ataxia-telangiectasia is a rare genetic disorder that affects the cerebellum, causing poor muscle coordination (ataxia) and small, dilated blood vessels (telangiectasias). It also leads to defective T-cell function, making affected individuals more susceptible to infections.

Incorrect choices:

a. X-linked agammaglobulinemia (XLA) is a primary immunodeficiency disorder that primarily affects B-cell function, leading to a lack of mature B cells and low levels of immunoglobulins, but does not involve defective T-cell function.

b. Selective immunoglobulin A (IgA) deficiency is characterized by a deficiency of IgA, but it does not typically lead to defective T-cell function.

d. DiGeorge syndrome is caused by a deletion on chromosome 22 and primarily affects the development of certain organs, including the thymus and parathyroid glands, resulting in T-cell deficiency. While it may lead to some B-cell abnormalities, defective T-cell function is the hallmark of this disorder.