ATI RN
ATI Pathophysiology
1. When the body produces antibodies against its own tissue, the condition is called
- A. Alloimmunity
- B. Opsonization
- C. Autoimmunity
- D. Hypersensitivity
Correct answer: C
Rationale: The correct answer is C, autoimmunity. Autoimmunity refers to the immune system attacking the body's own tissues. Alloimmunity (choice A) is the immune response to tissues of another individual of the same species. Opsonization (choice B) is the process where pathogens are marked for destruction by immune cells. Hypersensitivity (choice D) refers to excessive or inappropriate immune responses.
2. A male patient receiving androgen therapy is concerned about the risk of prostate cancer. What should the nurse explain about this risk?
- A. Finasteride has been shown to lower the risk of developing prostate cancer.
- B. Finasteride does not affect the risk of prostate cancer, so regular screening is unnecessary.
- C. Finasteride may increase the risk of developing prostate cancer, so regular screenings are recommended.
- D. Finasteride has no effect on the risk of prostate cancer, so regular screenings are unnecessary.
Correct answer: A
Rationale: The correct answer is A. Finasteride has been shown to lower the risk of developing prostate cancer. However, regular screenings are still recommended to monitor for any potential issues. Choice B is incorrect because finasteride has been associated with a decreased risk of prostate cancer, making regular screenings important. Choice C is incorrect as finasteride is not known to increase the risk of developing prostate cancer. Choice D is incorrect as finasteride has shown a protective effect against prostate cancer, but regular screenings are still necessary to ensure early detection and monitoring.
3. 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.
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. What assessment is the nurse performing when a client is asked to stand with feet together, eyes open, and hands by the sides, and then asked to close the eyes while the nurse observes for a full minute?
- A. Romberg test
- B. Weber test
- C. Rinne test
- D. Babinski test
Correct answer: A
Rationale: The correct answer is A, Romberg test. The Romberg test is used to assess balance and proprioception. During the test, the client is asked to stand with feet together, eyes open, and hands by the sides to observe their balance. Then, the client is asked to close their eyes while the nurse continues to observe for a full minute. This test helps in detecting any issues with proprioception and balance, which may be compromised in conditions affecting the nervous system. Choices B, C, and D are incorrect because the Weber test is used to assess hearing in each ear, the Rinne test is used to compare air and bone conduction of sound, and the Babinski test is used to assess the integrity of the corticospinal tract.
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