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 B
Explanation
Choice A reason: Garlic, ginger, and ginkgo biloba do not typically increase the effects of antidepressant medications. Instead, they may interact with other medications and alter their effectiveness.
Choice B reason: Garlic, ginger, and ginkgo biloba are known to have blood thinning properties, which means they can increase the effects of oral anticoagulants, potentially leading to an increased risk of bleeding.
Choice C reason: There is no widespread evidence to suggest that garlic, ginger, and ginkgo biloba decrease the effects of antianxiety medications. However, they may interact with other medications and should be used cautiously.
Choice D reason: While garlic has been noted for its potential to lower blood pressure, it is not commonly associated with a decrease in the effects of antihypertensive medications. In fact, it may enhance their blood pressure lowering effects.
Correct Answer is C
Explanation
The correct answer is: c. Prepare the client for intubation.
Choice A: Prepare to administer a vasopressor
Reason: Vasopressors are typically used to manage hypotension (low blood pressure) and are not a standard treatment for myasthenic crisis. Myasthenic crisis primarily involves respiratory muscle weakness, which can lead to respiratory failure, rather than issues with blood pressure.
Choice B: Administer an anticholinesterase medication
Reason: While anticholinesterase medications like pyridostigmine are used to manage myasthenia gravis, they are generally not recommended during a myasthenic crisis. During a crisis, the focus is on stabilizing the patient, often requiring more immediate interventions such as intubation and mechanical ventilation.
Choice C: Prepare the client for intubation
Reason: Intubation is a critical intervention in a myasthenic crisis due to the risk of respiratory failure. The crisis is characterized by severe muscle weakness, including the muscles that control breathing. Intubation ensures that the airway is protected and that the patient can receive adequate ventilation.
Choice D: Instruct the client to perform pursed lip breathing
Reason: Pursed lip breathing is a technique used to improve breathing efficiency in conditions like chronic obstructive pulmonary disease (COPD). However, it is not appropriate for managing a myasthenic crisis, where the primary issue is severe muscle weakness leading to respiratory failure.
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