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 B

Explanation

Choice A reason: Administering aspirin is appropriate for ischemic stroke but premature without confirming stroke type. Hemorrhagic stroke contraindicates aspirin. A head CT scan distinguishes ischemic from hemorrhagic stroke, guiding treatment, making it the priority to ensure safe intervention.

Choice B reason: Obtaining a head CT scan is the priority, as it differentiates ischemic from hemorrhagic stroke, critical for guiding treatment like thrombolytics or anticoagulation. Rapid imaging within the therapeutic window ensures timely intervention, minimizing brain damage, making it the essential first step.

Choice C reason: Monitoring blood glucose is important, as hyperglycemia worsens stroke outcomes, but it is secondary to confirming stroke type. A head CT scan provides diagnostic clarity, guiding urgent therapy, making imaging the priority over metabolic assessments in suspected stroke.

Choice D reason: Elevating the head of the bed reduces intracranial pressure but is not the first step. A head CT scan confirms stroke type, ensuring appropriate interventions like thrombolytics for ischemic stroke, making imaging critical to guide management and prevent further brain injury.

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

The nurse is caring for a client with a suspected stroke. Which intervention should the nurse prioritize?

Correct Answer is B

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

The nurse is performing a routine dressing change for a client with a stage 3 pressure injury that is red with significant granulation. The wound has a gauze dressing covering the area. Which action should the nurse implement?

Which of the following best describes the primary source of energy for Earth's climate system?

The nurse is reviewing risk factors for cholelithiasis in a client’s history. Which factor most significantly increases the client’s risk for developing gallstones?

A client with emphysema is reporting difficulty breathing and exhibiting audible wheezing. The nurse administers albuterol as prescribed for the third time within the last 12 hours. Which assessment finding warrants immediate intervention by the nurse?

A client with myasthenia gravis receives a new prescription for pyridostigmine. Which information should the nurse obtain prior to administering the medication?

A client with chronic obstructive pulmonary disease receives a new prescription for an ipratropium inhaler. Which action indicates to the nurse that additional teaching is needed?

The nurse is caring for a client with a history of liver cirrhosis. Which complication should the nurse monitor for?

An adult client is admitted with AIDS and oral candidiasis manifested by several painful mouth ulcers. The nurse delegates oral care to the unlicensed assistive personnel (UAP) and discusses how to assist the client. Which instruction should the nurse provide the UAP?