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. The nurse assesses an adult male client 24 hours following abdominal surgery and finds that his blood pressure is 98/40 mm Hg, he is tachycardic, restless, and irritable. Which action should the nurse take first?

Correct answer: D

Rationale: In this scenario, the nurse should first check under the client for evidence of bleeding. A blood pressure of 98/40 mm Hg, along with tachycardia, restlessness, and irritability, could indicate internal hemorrhage following abdominal surgery. Checking for bleeding under the back is crucial to rule out this life-threatening complication. Notifying the healthcare provider, ensuring IV infusion, or listening to lung sounds can be important but are secondary to ruling out immediate life-threatening conditions like internal bleeding.

3. When selecting patient problems for the 4-year-old child with nephrosis, what should be a priority for the nurse?

Correct answer: B

Rationale: The correct answer is B: Skin impairment. Nephrosis is characterized by gross edema, making skin care a priority. Skin impairment can result from the edema and needs close monitoring and management. While nutritional deficit and injury are important considerations in patient care, they are not the priority when dealing with a child with nephrosis. Impaired body image is not typically a priority in the immediate care of a young child with nephrosis.

4. An adult woman with primary Raynaud phenomenon develops pallor and then cyanosis of her fingers. After warming her hands, the fingers turn red, and the client reports a burning sensation. What action should the nurse take?

Correct answer: D

Rationale: In primary Raynaud phenomenon, the fingers go through a color sequence of pallor, cyanosis, and then redness when warmed. The burning sensation reported by the client indicates reperfusion. Continuing to monitor the fingers until the color returns to normal is appropriate in this situation as it ensures that the symptoms are resolving without the need for further intervention. Applying a cool compress could exacerbate the symptoms by causing vasoconstriction. Securing a pulse oximeter to monitor oxygen saturation is not necessary in this case as the issue is related to vasospasm rather than oxygenation. Reporting the finding to the healthcare provider is not urgent unless there are signs of complications or the symptoms do not improve with warming.

5. A client who was discharged 8 months ago with cirrhosis and ascites is admitted with anorexia and recent hemoptysis. The client is drowsy but responds to verbal stimuli. The nurse programs a blood pressure monitor to take readings every 15 minutes. Which assessment should the nurse implement first?

Correct answer: D

Rationale: In a client with a history of cirrhosis and ascites presenting with anorexia and recent hemoptysis, palpating the abdomen for tenderness and rigidity is crucial as it helps in identifying signs of complications related to these conditions. Assessing for abdominal tenderness and rigidity can provide valuable information about the presence of internal bleeding, ascites complications, or liver enlargement. Evaluating distal capillary refill, checking for bruising and petechiae, or examining peritibial regions for pitting edema are important assessments but are not the priority in this case, given the client's history and current symptoms.

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