how are type iv hypersensitivity reactions different from all other types i ii or iii of hypersensitivity reactions
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Medical Surgical Assignment Exam HESI Quizlet

1. How are type IV hypersensitivity reactions different from all other types (I, II, or III) of hypersensitivity reactions?

Correct answer: B

Rationale: Type IV hypersensitivity reactions are mediated by T cells and cytokine release, leading to delayed reactions, unlike types I, II, and III, which involve antibodies. Choice A is incorrect because type IV reactions do not involve antigen-antibody complexes. Choice C is incorrect as type IV reactions do not result in immediate allergic reactions. Choice D is incorrect as type IV reactions are not the least severe form of hypersensitivity; in fact, they are known to cause significant tissue damage and inflammation.

2. A male client with diabetes mellitus is transferred from the hospital to a rehabilitation facility following treatment for a stroke resulting in right hemiplegia. He tells the nurse that his feet are always uncomfortably cool at night, preventing him from falling asleep. Which action should the nurse implement?

Correct answer: D

Rationale: Placing warm blankets next to the client's feet is the most appropriate action to provide warmth and comfort. This method is safe and effective in addressing the client's complaint of uncomfortably cool feet at night. Providing a warming pad (Choice A) may pose a risk of burns or injury, especially for a client with decreased sensation due to diabetes. Mediating the client with a sedative (Choice B) does not address the underlying issue of cool feet and may not be necessary. Using a bed cradle (Choice C) to hold the covers off the feet does not directly address the client's need for warmth and comfort.

3. What is the most critical initial intervention for a client who is actively seizing?

Correct answer: C

Rationale: The most critical initial intervention for a client who is actively seizing is to turn the client to the side. This action helps maintain an open airway and prevents aspiration during a seizure. Restrain the client to prevent injury (Choice A) is incorrect because restraining a client during a seizure can lead to injury. Inserting an oral airway (Choice B) is not recommended as it can cause injury and is not necessary during an active seizure. Applying soft restraints to the wrists (Choice D) is also not recommended as it can lead to harm and does not address the immediate airway management needed during a seizure.

4. Ten hours following thrombolysis for an ST elevation myocardial infarction (STEMI), a client is receiving a lidocaine infusion for isolated runs of ventricular tachycardia. Which finding should the nurse document in the EMR as a therapeutic response to the lidocaine infusion?

Correct answer: D

Rationale: The correct answer is D. Decreased frequency of ventricular tachycardia (VT) episodes indicates that the lidocaine infusion is effectively managing the ventricular tachycardia. Stabilization of BP ranges (choice A) may not directly correlate with the therapeutic response to lidocaine for VT. Cessation of chest pain (choice B) may indicate pain relief but does not specifically address the effectiveness of lidocaine for VT. Reduced heart rate (choice C) is not a direct indicator of the response to lidocaine for managing VT.

5. Which is a long-term complication of cleft lip and palate?

Correct answer: C

Rationale: The correct answer is C, 'Faulty dentition.' The older child with cleft lip and palate may experience psychological difficulties due to the cosmetic appearance of the defect, issues with impaired speech, and faulty dentition. This can lead to problems with dental alignment, crowding, missing or malformed teeth, and other dental issues. Choices A, B, and D are incorrect as cognitive impairment, altered growth and development, and physical abilities are not typically considered long-term complications of cleft lip and palate.

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