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. While assisting a female client to the toilet, the client begins to have a seizure, and the nurse eases her to the floor. The nurse calls for help and monitors the client until the seizing stops. Which intervention should the nurse implement first?

Correct answer: A

Rationale: Documenting details of the seizure activity is the priority intervention as it is crucial for medical records and future care planning. This documentation can provide vital information for healthcare providers in understanding the type, duration, and characteristics of the seizure. Observing for lacerations on the tongue, prolonged periods of apnea, or evidence of incontinence are important assessments, but they come after documenting the seizure activity.

3. Methotrexate is prescribed for a client with rheumatoid arthritis (RA) who is also taking aspirin. What is the best explanation for the nurse to provide as to why a second medication has been added?

Correct answer: A

Rationale: The correct answer is A. Methotrexate is a disease-modifying antirheumatic drug (DMARD) that slows the progression of rheumatoid arthritis (RA), while aspirin helps control symptoms such as pain and inflammation. Therefore, the combination of methotrexate and aspirin is beneficial in managing RA by addressing both disease progression and symptom control. Choices B, C, and D are incorrect because methotrexate is not added to reduce the side effects of aspirin, has different side effects compared to aspirin, and does not enhance the effect of aspirin.

4. Which nursing problem has the highest priority when planning care for a client with Meniere’s disease?

Correct answer: A

Rationale: The correct answer is A. When caring for a client with Meniere’s disease, the highest priority nursing problem is the potential for injury related to vertigo. Meniere’s disease is characterized by symptoms like vertigo, which can increase the risk of falls and injuries. Ensuring the client's safety and preventing falls take precedence over other concerns. Choices B, C, and D are not the highest priority because they do not directly address the immediate risk of harm associated with vertigo and falls.

5. A client with liver cirrhosis is at risk for developing hepatic encephalopathy. Which clinical manifestation should the nurse monitor for?

Correct answer: B

Rationale: Corrected Rationale: Asterixis, also known as a flapping tremor, is a common sign of hepatic encephalopathy, indicating neurological dysfunction due to liver failure. Kussmaul respirations (option A) are associated with metabolic acidosis, which is not a typical manifestation of hepatic encephalopathy. Bradycardia (option C) and hypertension (option D) are not typically associated with hepatic encephalopathy; in fact, hepatic encephalopathy is more commonly associated with alterations in mental status, neuromuscular abnormalities, and changes in behavior.

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