a patient presents with a rash from poison ivy the nurse knows that this is which type of hypersensitivity
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ATI Pathophysiology Final Exam

1. A patient presents with a rash from poison ivy. The nurse knows that this is which type of hypersensitivity?

Correct answer: D

Rationale: A rash from poison ivy is an example of a type IV hypersensitivity reaction. Type IV hypersensitivity reactions are delayed cell-mediated immune responses involving T cells. This type of reaction is characterized by a delayed onset, typically occurring 48-72 hours after exposure to the antigen. Choice A, Type I hypersensitivity reactions, are immediate hypersensitivity reactions mediated by IgE antibodies. Choices B and C, Type II and Type III hypersensitivity reactions, involve antibody-mediated cytotoxicity and immune complex deposition, respectively, which are not characteristic of poison ivy-induced rashes.

2. A male patient with benign prostatic hyperplasia (BPH) is prescribed finasteride (Proscar). What therapeutic effect is expected from this medication?

Correct answer: A

Rationale: The correct answer is A: Reduction in prostate size and improvement in urinary symptoms. Finasteride works by reducing the size of the prostate gland, which in turn helps alleviate urinary symptoms such as frequency, urgency, weak stream, and incomplete emptying of the bladder. Choice B is incorrect as while finasteride can improve urine flow indirectly by reducing prostate size, it does not directly increase urine flow. Choice C is incorrect because finasteride is not intended to improve erectile function. Choice D is incorrect as finasteride does not primarily provide relief from pain associated with BPH.

3. A 30-year-old female has suffered a third-degree burn to her hand after spilling hot oil in a kitchen accident. Which teaching point by a member of her care team is most appropriate?

Correct answer: D

Rationale: In third-degree burns, infection is a major concern due to the extensive damage to the skin. Monitoring for infection is crucial. Choice A is incorrect because third-degree burns often require skin grafts due to the severity of the injury. Choice B is incorrect as loss of sensation is more common in nerve damage and not necessarily in burns. Choice C is incorrect because while elevation can help with swelling in minor burns, it is not the most critical concern in third-degree burns.

4. In which patient is alpha-1 antitrypsin deficiency the likely cause of chronic obstructive pulmonary disease?

Correct answer: A

Rationale: Alpha-1 antitrypsin deficiency is a genetic cause of chronic obstructive pulmonary disease (COPD). It is more common in younger patients with a history of smoking at a younger age, like the 30-year-old who has smoked for 3 years. Choices B, C, and D are less likely to be associated with alpha-1 antitrypsin deficiency as COPD in these cases is more likely due to smoking and environmental exposures.

5. Peritonitis is a condition that can result in serious complications. Identify one of the complications.

Correct answer: C

Rationale: Corrected Rationale: Peritonitis can lead to severe complications such as sepsis and shock due to the infection spreading in the abdominal cavity. Sepsis is a systemic inflammatory response to infection, and shock is a life-threatening condition where the body's organs are not receiving enough blood flow. Choices A, B, and D are incorrect. Increased peristalsis is not a typical complication of peritonitis; dizziness and malaise, as well as nausea and vomiting, are symptoms rather than complications of the condition.

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