ATI RN
Pathophysiology Practice Exam
1. How can a colony-stimulating factor affect the patient's erythrocyte count?
- A. It stimulates the growth of red blood cells.
- B. It suppresses T-cell production.
- C. It inhibits protein synthesis.
- D. It stimulates antibody production.
Correct answer: A
Rationale: Colony-stimulating factors are substances that stimulate the production of blood cells in the bone marrow. Erythrocytes are red blood cells, so a colony-stimulating factor would specifically stimulate the growth of red blood cells, leading to an increase in the patient's erythrocyte count. Choice B is incorrect because colony-stimulating factors do not suppress T-cell production. Choice C is incorrect because colony-stimulating factors do not inhibit protein synthesis. Choice D is incorrect because colony-stimulating factors do not stimulate antibody production; they primarily affect the production of blood cells.
2. While planning care for an elderly patient, the nurse remembers that increased age is associated with:
- A. Increased T cell function
- B. Increased immune function
- C. Increased production of antibodies
- D. Increased levels of circulating autoantibodies
Correct answer: D
Rationale: As individuals age, their immune function tends to decrease, making them more susceptible to infections and diseases. Additionally, increased age is associated with higher levels of circulating autoantibodies, which can lead to autoimmune conditions. Choice A is incorrect as aging is not typically associated with increased T cell function. Choice C is also incorrect as aging does not necessarily result in increased production of antibodies. Therefore, the correct answers are B (Decreased immune function) and D (Increased levels of circulating autoantibodies).
3. An adult patient has begun treatment with fluconazole. The nurse should recognize the need to likely discontinue the drug if the patient develops which of the following signs or symptoms?
- A. Jaundice
- B. Weight gain
- C. Iron deficiency anemia
- D. Hematuria
Correct answer: A
Rationale: The correct answer is A: Jaundice. Fluconazole, an antifungal medication, can rarely cause hepatotoxicity, which may manifest as jaundice. Monitoring for signs of liver dysfunction, such as jaundice, is crucial during fluconazole therapy. Weight gain, iron deficiency anemia, and hematuria are not commonly associated with fluconazole use and are not indications for discontinuing the drug.
4. The canola plant's genome is altered to produce an herbicide-resistant crop. The canola oil produced from this crop 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 C: genetically modified food. Canola plants with altered genomes to be herbicide-resistant are an example of genetically modified organisms (GMOs). Genetically modified foods have their genetic material modified for various purposes, such as enhancing resistance to pests, herbicides, or improving nutritional content. Choice A, 'pesticide-free food,' is incorrect because genetic modification does not necessarily make the food pesticide-free. Choice B, 'saturated fat food,' is incorrect as it does not relate to the genetic modification of the canola plant. Choice D, 'product that is pure,' is too vague and does not specifically address the genetic modification aspect of the canola plant.
5. What type of immunity will the hepatitis B series provide a nursing student scheduled to receive it?
- A. Active immunity
- B. Passive immunity
- C. Innate immunity
- D. Natural immunity
Correct answer: A
Rationale: The correct answer is active immunity. The hepatitis B series immunization will provide active immunity, where the individual's immune system is stimulated to produce antibodies against the hepatitis B virus. This type of immunity is long-lasting and provides protection against future exposures. Passive immunity (choice B) involves the transfer of pre-formed antibodies and is temporary. Innate immunity (choice C) is the body's natural defense mechanisms, present at birth. Natural immunity (choice D) refers to immunity acquired through normal life processes, such as recovering from an infection.
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