A nurse in an allergy clinic is caring for a client who has a history of seasonal allergy symptoms. The client had a radioallergosorbent test (RAST) completed on a previous visit. The nurse should recognize that an elevation in which of the following immunoglobulins indicates a positive result?
Immunoglobulin E (IgE)
Immunoglobulin M (IgM)
Immunoglobulin A (IgA)
Immunoglobulin G (IgG)
The Correct Answer is A
Choice A reason: Immunoglobulin E (IgE) is associated with allergic reactions. A RAST test measures the level of allergen specific IgE antibodies in the blood. An elevation in IgE indicates sensitization to a particular allergen and a positive result for the allergy.
Choice B reason: Immunoglobulin M (IgM) is usually the first antibody produced by the immune system when it detects an infection. It is not typically associated with the detection of allergies.
Choice C reason: Immunoglobulin A (IgA) plays a critical role in mucosal immunity and is found in high concentrations in the mucous membranes, particularly those lining the respiratory passages and the gastrointestinal tract, but it is not used as an indicator in RAST testing for allergies.
Choice D reason: Immunoglobulin G (IgG) is the most abundant type of antibody and is involved in the recognition and removal of pathogens. It is not specific to allergic response detection in RAST testing.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: Acute pain is expected with a fracture but does not specifically indicate impaired venous return.
Choice B reason: Ecchymosis, or bruising, can occur with a fracture due to bleeding into the tissue but is not a direct indicator of venous return issues.
Choice C reason: Increasing edema is a sign of impaired venous return as it indicates a buildup of fluid in the tissues, which can occur if the veins are not effectively returning blood to the heart.
Choice D reason: A diminishing distal pulse could indicate arterial impairment rather than venous return issues.
Correct Answer is C
Explanation
Choice A reason: Keeping the client NPO (nothing by mouth) is not directly related to preventing a thyroid crisis. While it may be necessary in some situations, such as preoperative care, it does not address the hyperthyroid state.
Choice B reason: Observing the client for signs of hypocalcemia is important, especially after thyroid surgery, as hypocalcemia can occur due to accidental removal or damage to the parathyroid glands. However, it is not a preventive measure for a thyroid crisis.
Choice C reason: Providing a quiet, low stimulus environment can help reduce stress and agitation, which are potential triggers for a thyroid crisis. Stress can exacerbate hyperthyroid symptoms and precipitate a crisis.
Choice D reason: Aspirin is contraindicated in clients with hyperthyroidism as it can increase thyroid hormone levels by displacing them from their binding proteins. This can potentially worsen the condition and lead to a crisis.
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