An adolescent boy is admitted to the emergency department following a bee sting. He arrives with a body rash and 30 minutes later becomes short of breath. The nurse obtains vital signs with a blood pressure of 90/52 mm Hg, heart rate 130 beats/minute, and respiratory rate 40 breaths/minute. The client is exhibiting clinical manifestations of which type of immune reaction?

IgE-mediated response

Cell-mediated hypersensitivity

Autoimmune response

Type II hypersensitivity

Answer and Explanation

The Correct Answer is A

Choice A reason: An IgE-mediated (Type I) hypersensitivity reaction, like anaphylaxis, occurs post-bee sting, with rapid onset of rash, shortness of breath, hypotension, and tachycardia. IgE antibodies trigger mast cell degranulation, releasing histamine, causing vasodilation, bronchoconstriction, and systemic symptoms, matching the client’s acute presentation.

Choice B reason: Cell-mediated (Type IV) hypersensitivity involves T-cells, causing delayed reactions like contact dermatitis, not rapid systemic symptoms. Bee sting reactions are immediate, driven by IgE, not T-cells. Rash, hypotension, and respiratory distress indicate anaphylaxis, not a delayed cell-mediated response.

Choice C reason: Autoimmune responses involve self-directed antibodies, as in lupus, not triggered by external allergens like bee stings. The client’s acute rash, hypotension, and respiratory distress suggest an IgE-mediated anaphylactic reaction, not an autoimmune process, which is unrelated to acute allergen exposure.

Choice D reason: Type II hypersensitivity involves antibody-mediated cytotoxicity, as in transfusion reactions, not allergen-induced systemic symptoms. Bee sting reactions are IgE-driven, causing immediate anaphylaxis with rash and hypotension, not cytotoxic damage, making Type II inappropriate for the client’s acute presentation.

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Correct Answer is C

Explanation

Choice A reason: Using a bronchodilator for sudden shortness of breath applies to rescue inhalers like albuterol, not maintenance bronchodilators (e.g., tiotropium) for COPD, which are used daily. This statement indicates misunderstanding, as maintenance inhalers prevent symptoms, not treat acute dyspnea.

Choice B reason: Thinner sputum is not a primary effect of bronchodilators, which relax airway smooth muscles to improve airflow in COPD. Mucolytics, not bronchodilators, reduce sputum viscosity. This statement reflects incorrect understanding, as bronchodilators target bronchoconstriction, not secretion consistency.

Choice C reason: Daily use of a maintenance bronchodilator, like tiotropium, is correct for COPD to prevent bronchospasm and maintain airway patency. This statement shows proper understanding, as consistent use reduces exacerbations and improves lung function, aligning with standard COPD management protocols.

Choice D reason: Using another inhaler between doses suggests confusion about maintenance versus rescue inhalers. Maintenance bronchodilators are used daily, not interspersed with others. This indicates misunderstanding, as proper scheduling is essential for effective COPD control with prescribed bronchodilators.

A. Increase carbohydrate intake at meals B. Review the client’s medication regimen C. Monitor blood glucose every hour D. Encourage high-protein snacks

Correct Answer is B

Explanation

Choice A reason: Increasing carbohydrate intake may prevent hypoglycemia but does not address the root cause, such as excessive insulin or oral hypoglycemic agents. Reviewing medications identifies dosing issues, ensuring safer management of type 2 diabetes, making it the priority over dietary changes.

Choice B reason: Reviewing the medication regimen is critical, as hypoglycemia in type 2 diabetes often results from excessive insulin or sulfonylureas. Adjusting doses or timing with a provider prevents recurrent episodes, addressing the primary cause and ensuring safe glycemic control, making it the priority action.

Choice C reason: Monitoring blood glucose hourly is reactive and impractical long-term. It confirms hypoglycemia but does not prevent it. Reviewing medications addresses the cause, such as inappropriate dosing, making it more effective for managing recurrent hypoglycemia in type 2 diabetes.

Choice D reason: High-protein snacks stabilize blood glucose but are secondary to addressing medication-related hypoglycemia. Excessive insulin or oral agents are likely causes, so reviewing the regimen is prioritized to correct dosing, preventing recurrent episodes more effectively than dietary adjustments alone.

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Naxlex Comprehensive Predictor Exams

A client with a history of chronic obstructive pulmonary disease receives a new prescription for a bronchodilator inhaler. Which statement by the client indicates correct understanding of the inhaler’s use?

Correct Answer is C

Explanation

The nurse is caring for a client with type 2 diabetes mellitus who reports frequent episodes of hypoglycemia. Which action should the nurse prioritize?

Correct Answer is B

Explanation

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The nurse is caring for a client with a history of chronic obstructive pulmonary disease who is receiving oxygen therapy. Which assessment should the nurse prioritize?

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