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 client with chronic heart failure is being discharged with a new prescription for furosemide. Which instruction should the nurse include in the discharge teaching?

Correct answer: A

Rationale: The correct answer is to instruct the client to increase their intake of potassium-rich foods. Furosemide is a loop diuretic that can lead to potassium loss due to increased urinary excretion. Potassium-rich foods can help prevent hypokalemia, a potential side effect of furosemide. Restricting fluid intake (choice B) may not be suitable for all patients with heart failure, and a general restriction of 1 liter per day is not typically recommended. Avoiding salt substitutes containing potassium (choice C) is not a priority teaching point in this scenario. Weighing oneself once a week (choice D) is important for monitoring fluid status, but increasing potassium-rich foods is more directly related to the potential side effects of furosemide.

3. An 82-year-old female client with type 2 diabetes and degenerative arthritis complains to the nurse that she has a hard time cutting her toenails. What should the nurse recommend?

Correct answer: A

Rationale: For an 82-year-old female client with type 2 diabetes and degenerative arthritis, the nurse should recommend seeking routine nail care with a podiatrist. This is crucial to ensure proper and safe toenail care, reducing the risk of injury and infection, which is especially important for diabetic clients. Encouraging monthly pedicures at a nail salon (choice B) may not address the underlying issues related to diabetes and arthritis. Soaking feet for 10 minutes before cutting nails (choice C) may help soften the nails but does not address the difficulty the client faces in cutting them. Asking a family member to cut toenails (choice D) may not guarantee the expertise needed for proper diabetic foot care, which a podiatrist can provide.

4. A client with hyperthyroidism is prescribed methimazole. Which adverse effect should the nurse monitor for?

Correct answer: A

Rationale: The correct answer is Agranulocytosis. Methimazole, used to treat hyperthyroidism, can lead to agranulocytosis, a severe decrease in white blood cells. This condition increases the risk of infections and requires immediate medical attention. Hypoglycemia (choice B) is not a common adverse effect of methimazole. Bradycardia (choice C) is unlikely as methimazole tends to have minimal effects on heart rate. Hypercalcemia (choice D) is not associated with methimazole use.

5. A client who has a history of hyperthyroidism was initially admitted with lethargy and confusion. Which additional finding warrants the most immediate action by the nurse?

Correct answer: D

Rationale: A further decline in LOC can indicate severe complications and requires immediate attention. This change may signify worsening neurological status, which could lead to life-threatening consequences if not addressed promptly. Choices A, B, and C may also be concerning in a client with a history of hyperthyroidism, but a further decline in LOC takes priority due to its potential for rapid deterioration and the need for urgent intervention.

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