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 A
Explanation
Choice A reason: Propranolol is contraindicated in patients with asthma as it may cause bronchoconstriction, exacerbating respiratory difficulties.
Choice B reason: Glaucoma is not a contraindication for propranolol; in fact, betablockers can be used to treat glaucoma by reducing intraocular pressure.
Choice C reason: Depression is not a direct contraindication, but caution is advised as propranolol can sometimes worsen symptoms of depression.
Choice D reason: Propranolol is often used as a preventive treatment for migraines and is not contraindicated in patients with this condition.
Correct Answer is B
Explanation
Choice A reason: Assessing the cranial nerves is important, but it is not the immediate next step after implementing droplet precautions for suspected bacterial meningitis.
Choice B reason: Decreasing environmental stimuli can help reduce the risk of seizures and is a supportive measure for a patient with suspected bacterial meningitis.
Choice C reason: Closing the room is part of implementing droplet precautions but is not an action that needs to be initiated by the nurse as it should already be in place.
Choice D reason: Administering an antipyretic may be necessary if the patient has a fever, but it is not the immediate next action after droplet precautions.
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