ATI RN
Pathophysiology Final Exam
1. A 21-year-old male is brought to the ED following a night of partying in his fraternity. His friends found him 'asleep' and couldn't get him to respond. They cannot recall how many alcoholic beverages he drank the night before. While educating a student nurse and the man's friends, the nurse begins by explaining that alcohol is:
- A. A water-soluble compound that is easily absorbed by the gastric lining of the stomach.
- B. Very lipid-soluble and rapidly crosses the blood–brain barrier.
- C. Able to reverse the transport of some substances to remove them from the brain.
- D. Very likely to cause sedation and therefore the client just needs to sleep it off.
Correct answer: B
Rationale: The correct answer is B. Alcohol is very lipid-soluble and rapidly crosses the blood–brain barrier, leading to its effects on the central nervous system and causing symptoms like sedation and unconsciousness. Choice A is incorrect because alcohol is not water-soluble; it is lipid-soluble. Choice C is incorrect as alcohol does not reverse the transport of substances from the brain. Choice D is incorrect as sedation from alcohol is not a reason to just 'sleep it off' in cases of alcohol poisoning, which can be life-threatening and requires medical attention.
2. Canola oil produced from genetically modified canola plants altered to be herbicide-resistant is an example of a:
- A. pesticide-free food.
- B. saturated fat food.
- C. genetically modified food.
- D. product that is pure.
Correct answer: C
Rationale: The correct answer is 'genetically modified food.' Canola oil derived from genetically modified canola plants falls into this category because the plant's genome has been altered to exhibit herbicide resistance. This genetic modification makes it a genetically modified food. Choice A, 'pesticide-free food,' is incorrect as the genetic modification is to resist herbicides, not pesticides. Choice B, 'saturated fat food,' is incorrect as it does not accurately describe the genetic modification of the canola plants. Choice D, 'product that is pure,' is too vague and does not address the genetic modification aspect of the canola plants.
3. A male patient with benign prostatic hyperplasia (BPH) is prescribed finasteride (Proscar). What should the nurse include in the patient education?
- A. The medication is expected to reduce the size of the prostate, which should improve urinary symptoms over time.
- B. The medication will improve symptoms within a few days.
- C. The medication will cure BPH after treatment is complete.
- D. The medication may cause erectile dysfunction as a side effect.
Correct answer: A
Rationale: Finasteride is expected to reduce the size of the prostate, which should improve urinary symptoms over time, although the effects may take several weeks or months to become noticeable.
4. When a patient asks the nurse what hypersensitivity is, how should the nurse respond? Hypersensitivity is best defined as:
- A. A reduced immune response found in most pathologic states
- B. A normal immune response to an infectious agent
- C. An excessive or inappropriate response of the immune system to a sensitizing antigen
- D. Antigenic desensitization
Correct answer: C
Rationale: Hypersensitivity is correctly defined as an excessive or inappropriate response of the immune system to a sensitizing antigen. This response leads to tissue damage or other clinical manifestations. Choice A is incorrect as hypersensitivity involves an exaggerated, not a reduced, immune response. Choice B is incorrect because hypersensitivity is not a normal immune response to an infectious agent but rather an exaggerated one. Choice D is incorrect as it refers to desensitization, which is the opposite of hypersensitivity.
5. Mrs. Mendoza is a 75-year-old client who has dementia of the Alzheimer’s type and confabulates. The nurse understands that this client:
- A. Denies confusion by being jovial.
- B. Pretends to be someone else.
- C. Rationalizes various behaviors.
- D. Fills in memory gaps with fantasy.
Correct answer: D
Rationale: Confabulation, a common symptom in dementia, involves filling in memory gaps with fabricated stories rather than intentionally pretending to be someone else (Choice B), denying confusion by being jovial (Choice A), or rationalizing various behaviors (Choice C). Confabulation is not a deliberate act but a memory error that results in the creation of false memories.
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